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Tag: Superconductivity

Maglev Trains

This model train demonstrates magnetic levitation, the Meissner Effect and magnetic flux trapping.


Superconductivity 101

They don't call it super for nothing. Once you get a superconductor going, it'll keep on ticking like the Energizer Bunny, only a lot longer. The catch is, it needs to be kept colder than Pluto.


Intro to high-temperature superconductors

At the National MagLab and other labs across the globe, the race to discover ever-warmer superconductors is heating up. Find out what these materials are, what they’re good for and why this field is red hot.


A Match Made in Physics

Whether with people, particles or the forces of physics, love always finds a way.


John Bardeen

John Bardeen was one of a handful of individuals awarded the Nobel Prize twice and the first scientist to win dual awards in physics.


Leon Cooper

Leon Cooper shared the 1972 Nobel Prize in Physics with John Bardeen and Robert Schrieffer, with whom he developed the first widely accepted theory of superconductivity.


Karl Alexander Müller

In their search for new superconductors, Swiss theoretical physicist Karl Alexander Müller and his young colleague, J. Georg Bednorz, abandoned the metal alloys typically used in superconductivity research in favor of a class of oxides known as perovskites.


Heike Kamerlingh Onnes

Heike Kamerlingh Onnes was a Dutch physicist who first observed the phenomenon of superconductivity while carrying out pioneering work in the field of cryogenics.


John Robert Schrieffer

While still in graduate school, John Robert Schrieffer developed with John Bardeen and Leon Cooper a theoretical explanation of superconductivity that garnered the trio the Nobel Prize in Physics in 1972.


1930 - 1939

New tools such as special microscopes and the cyclotron take research to higher levels, while average citizens enjoy novel amenities such as the FM radio.


1940 - 1959

Defense-related research leads to the computer, the world enters the atomic age and TV conquers America.


1960 - 1979

Computers evolve into PCs, researchers discover one new subatomic particle after another and the space age gives our psyches and science a new context.


1980 - 2003

Scientists explore new energy sources, the World Wide Web spins a vast network and nanotechnology is born.


Dirac Fermions Detected Via Quantum Oscillations

This work provides important insight into one of the parent materials of iron-based superconductors.


Quasi-2D to 3D Fermi Surface Topology Change in Nd-Doped CeCoIn5

Scientists found that the emergence of an exotic quantum mechanical phase in Ce1-xNdxCoIn5 is due to a shape change in the Fermi surface. This finding ran counter to theoretical arguments and has led investigators in new directions.


Superconducting Hydride Under Extreme Magnetic Fields and Pressure

Scientists have long pursued the goal of superconductivity at room temperature. This work opens a route towards one day stabilizing superconductivity at room temperature, which could open tremendous technological opportunities.


Evidence Supporting BiPd as a Topological Superconductor

The observation of topological states coupled with superconductivity represents an opportunity for scientists to manipulate nontrivial superconducting states via the spin-orbit interaction. While superconductivity has been extensively studied since its discovery in 1910, the advent of topological materials gives scientists a new avenue to explore quantum matter. BiPd is being studied using "MagLab-sized fields" by scientists from LSU in an effort to determine if it is indeed a topological superconductor.


Fifty Percent Boost for Niobium–tin

MagLab users have modified the critical current of Nb3SN, a material that was thought to be fully exploited, and boosted its performance by 50%.


Extreme Re-Entrant Superconductivity

Studies of uranium ditelluride in high magnetic fields show superconductivity switching off at 35 T, but reoccurring at higher magnetic fields between 40 and 65 T.


Nematic Phase Weakens Superconductivity

A nematic phase is where the molecular/atomic dynamics show elements of both liquids and solids, like in liquid crystal displays on digital watches or calculators. Using high magnetic fields and high pressure, researchers probed the electronic states of an iron-based superconductor and found that its nematic state weakened superconductivity.


Hidden Magnetism Revealed in a Cuprate Superconductor

This research clarifies fundamental relationships between magnetism, superconductivity and the nature of the enigmatic “pseudogap state" in cuprate superconductors. The discovery provides an additional puzzle piece in the theoretical understanding of high-temperature superconductors - a key towards improving and utilizing these materials for technological applications.


Probing a Purported Spin Nematic State Utilizing the World Record 32T All-Superconducting Magnet

Nuclear magnetic resonance measurements were performed in the all-new 32 T superconducting magnet in an effort to confirm a new quantum state. Results confirm the game-changing nature of this magnet.


First Spin Coherence Measurements in the MagLab's 32T Superconducting Magnet

The MagLab's 32 T all-superconducting magnet is now serving users at full field. An early experiment in the magnet identified an important milestone on the road to quantum computers.


Linear-In Temperature Resistivity From Isotropic Planckian Scattering Rate

Electrons in metals behave like chaotic bumper cars, crashing into each other at every opportunity. While they may be reckless drivers, this result demonstrates that this chaos has a limit established by the laws of quantum mechanics. Using the 45T hybrid magnet and a crystal of high-temperature superconducting material, scientists were able to measure this boundary using high fields to bend electron trajectories to their will.


Fermi Surface Transforms at the Onset of the Pseudogap State in a Cuprate Superconductor

In high-temperature superconductors, a region exists between the superconducting and normal states known as the pseudogap state. Using the 45T hybrid magnet, scientists have determined that magnetism plays a previously unknown role in the development of the pseudogap phase.


Ultrahigh Supercurrent Density in a Two-Dimensional Topological Material

Research on a tungsten disulfide material (1T’-WS2) reveals a superconducting state that is able to carry an incredibly large amount of current within its superconducting layers - exceeding all other known two-dimensional superconductors.


New High-Magnetic-Field Thermometers for Sub-Millikelvin Temperatures

This highlight focuses on the development of new thermometry required to study quantum materials and phenomena in high magnetic fields and at ultralow temperatures. The team has demonstrated that exceedingly small quartz tuning forks bathed in liquid 3He maintain a constant calibration that is magnetic field independent, thereby opening the use of these devices as new sensors of the response of quantum systems.


HTS NMR Probe Tracks Metabolism Cycles During Insect Dormancy

An insect's ability to survive anaerobic conditions (without oxygen) during winter pupation occurs through periodic cycling of aerobic respiration pathways needed to recharge energy and clear waste. The cellular mechanisms at play during these brief near-arousal periods can provide clues to help improve the success in storage and transplant of human organs.


Record-Breaking Magnetoresistance Measured in Natural Graphite

Researchers demonstrate a new record magnetoresistance in graphene by improving the contacting method, which helps improve our understanding of the material and can be useful in future sensors, compasses and other applications.


Smart Non-Linear Transport Technique Expands the Frontier of Superconductor Research

Superconductors conduct large amounts of electricity without losses. They are also used to create very large magnetic fields, for example in MRI machines, to study materials and medicine. Here, researchers developed a fast, new "smart" technique to measure how much current a superconductor can carry using very high pulsed magnetic fields.


Ninety Teslas Peek Under the Superconducting Dome of a High-Temperature Superconductor

Physics does not yet know why copper-based superconductors (cuprates) conduct electrical current without dissipation at unprecedentedly high temperatures. Ultra high magnetic fields are used here to suppress superconductivity in a cuprate near absolute zero temperature, revealing an underlying transition to an electronic phase that might be the cause of the superconductivity.


Clues About Unconventional Superconductivity From High-Field Hall Data

In everyday life, phase transitions - like when water boils and turns into steam or freezes and becomes ice -  are caused by changes in temperature. Here, very high magnetic fields are used to reveal a quantum phase transition not caused by temperature, but instead driven by quantum mechanics upon changing the concentration of electrons, work that could hold critical clues that explain high-temperature superconductivity.


Magic Gap Ratio at the "BCS Superconducting to Bose-Einstein Condensate" Crossover in the High-Tc Cuprates

A defining experimental signature of a crossover in the strength of the pairing interactions from the weak coupling BCS to the strong coupling Bose-Einstein condensation limit has been discovered in high temperature superconductors.


Ultrafast THz Spectroscopy in Pulsed Magnetic Fields

Using pulses of far-infrared light and large magnetic fields, we directly measured the cyclotron resonance of charge carriers in a high-temperature superconductor for the first time, providing a new measure of their mass.


Using 75T Pulsed Magnetic Fields to Detect Chern Pockets With Large Orbital Moments in CsV3Sb5

Pulsed magnetic fields of up to 75 T were applied at many different angles to a newly discovered metal, CsV3Sb5, in temperatures down to 0.5 K. Unusual oscillations in the metal’s electrical conductivity were found, giving definitive evidence of Chern pockets, a key indicator of a quantum mechanical property known as topology. Topology promises to be invaluable in future electronic devices that will work on completely new quantum principles.


Ceramic Insulation for High-Temperature Superconducting Wire

MagLab scientists and engineers have developed a special coating on Bi-2212 superconducting wire for electrical insulation in superconducting magnets that will enable the wire to be used in ultra-high field nuclear magnetic resonance magnets.


REBCO Fatigue Testing Shows Promise for Future Magnets

Tests of high-temperature superconducting REBCO tapes at 4.2 K showed resistance to cyclic loading, demonstrating that it is a promising material for designing HTS magnets of the future.


Integrated Coil Form Technology for Ultra High Magnetic Fields

Tests of the first Integrated Coil Form test coil wound using REBCO superconducting tape show promise for use in ultra powerful magnets of the future.


"Test Coil Zero" on the Path to 40T

A recent test coil with more than 1300 meters of conductor successfully demonstrated a new winding technique for insulated REBCO technology and was fatigue cycled to high strain for hundreds of cycles. This is the MagLab's first "two-in-hand" wound coil and the first fatigue cycling test of a coil of this size, both of which are very important milestones on the path to a 40T user magnet.


Testing REBCO Critical Current Using a Superconducting Transformer

A new device enables the testing of superconducting cables to high current without the high helium consumption associated with traditional current leads. This superconducting transformer will play an important role in testing cables needed for next-generation superconducting magnets.


"Resistive Insulation" Test Coil for Future 40T All-Superconducting Magnet

A 19 T high-field magnet made with REBCO high-temperature superconductor, but without electrical insulation, was tested to see if it is a viable design option for a future 40 T all-superconducting magnet.


Quality Assurance Testing for High Temperature Superconducting Modules

A test protocol has been developed and successfully demonstrated the ability to evaluate the performance of a large percentage of tape in a REBCO-wound double pancake module. 


High-Temperature Superconducting Tape Suitable for Magnets at 50 Teslas and Beyond

Recent measurements of superconducting tapes in the MagLab's 45-tesla hybrid magnet shows that the power function dependence of current on magnetic field remains valid up to 45T in liquid helium, while for magnetic field in the plane of the tape conductor, almost no magnetic field dependence is observed. Thus design of ultra-high-field magnets capable of reaching 50T and higher is feasible using the latest high-critical current density REBCO tape.


Heat-Treatment of Large Hadron Collider Nb3Sn Magnets

To increase the rate of particle collisions in the Large Hadron Collider (LHC) at CERN, new powerful magnets will soon be made from Nb3Sn superconducting wires. Here, researchers report a change to the heat-treatment temperature to optimize Nb3Sn superconducting magnet performance.


Hafnium Greatly Improves Nb3Sn Superconductor for High Field Magnets

Small additions of elemental Hafnium boosts current-carrying capability in Nb3Sn superconductor.


Tracking the Potential for Damage in Nb3Sn Superconducting Coils from the Hardness of Surrounding Copper

High field superconductor magnets greater than 10 T made from brittle Nb3Sn superconducting wires need special attention to their assembly, strength and endurance. This new study of damage in Nb3Sn superconducting wire from prototype accelerator coils built at CERN provides a path to designing better superconductor cables for the next generation of higher field accelerator magnets.


Advanced Microscopy for Better Nanostructural Insights in Bi-2212 Round Wires

Researchers working to push the high temperature superconducting material (Bi-2212) to the forefront of superconducting magnet technology have used novel characterization methods to understand the complex relationship between its processing and its superconducting properties, specifically its current carrying capabilities. 


Resilient Bi-2212 Round Wire

Researchers studied the mechanics of supercurrent flow in state-of-the-art Bi-2212 superconducting round wires and learned that the microstructure of the superconducting filaments is inherently resilient, work that could open the door to new opportunities to raise supercurrent capacity of Bi-2212 round wires.


High Temperature Superconducting CORC® Cabling Technology

Large superconducting magnets need multi-conductor cables, which act like multi-lane freeways to allow electricity to switch lanes if one gets blocked. Here cross-sectional images of CORC wires reveal insights to improve the contact between conductors. 


Twisted Multifilament Round Wires for Reduction of Magnetization Losses

New work on round wires made with Bi-2212, a superconducting material, feature efficiency and performance that could enable the next generation of powerful magnets. Magnets made with these Bi-2212 round wires will enable nuclear fusion energy efforts, along with other applications where superconducting magnets are frequently charged and discharged during regular operation.


Bi-2212 High-Temperature Superconducting Test Coils up to 34T

High magnetic fields are essential for many exciting scientific and industrial applications including next-generation MRI, particle accelerators, fusion, and nuclear magnetic resonance spectroscopy. Here, a Bi-2212 high-temperature superconducting test coil demonstrated robust operation up to 34T, expanding the options for future magnet development pathways. 


An R&D Milestone for Bi-2212 High Temperature Superconducting Magnets

High temperature superconducting magnets offer tremendous potential for technological advancements and scientific discoveries, making them essential in various aspects of modern society. This work focuses on a milestone in mechanical reinforcement and overall operation of a Bi-2212 magnet.


New World-Record Magnet Fulfills Superconducting Promise

Made with high-temperature superconductors, the National MagLab's newest instrument shatters a world record and opens new frontiers in science.


Eminent Scientist to Join National MagLab

Lance Cooley, an expert in the field of applied superconductivity, will join the lab this summer.


$1 Million Grant Will Advance Compact Particle Accelerators

The DOE effort foresees a slew of health, environmental and safety applications.


National MagLab to Receive $184M NSF Renewal Grant

The National Science Foundation announces five-year funding grant for continued operation of the world’s most powerful magnet lab.


New Director Named for Applied Superconductivity Center

Lance Cooley brings cool plans for developing superconducting materials and magnets.


Award to Help MagLab Scientist Push Research Into Marketplace

"GAP" award will help further breakthrough treatment system for next-generation superconducting magnets.


"Strange Metals" Just Got Stranger

A material already known for its unique behavior is found to carry current in a way never before observed.


Grant to Launch Next-Generation of Superconducting Magnets

With funding from the National Science Foundation, scientists and engineers will determine the best way to build a new class of record-breaking instruments.


Unlocking Graphene’s Superconducting Powers

With a twist and a squeeze, researchers discover a new method to manipulate the electrical conductivity of this game-changing "wonder material."


High-Performance Microscope Will Take Research to Next Level

State-of-the-art instrument will be used in materials and next-generation magnet research.


"Superhydride" Shows Superconductivity at Record-Warm Temperature

In a hydrogen-packed compound squeezed to ultra-high pressures, scientists have observed electrical current with zero resistance tantalizingly close to room temperature.


With mini magnet, National MagLab creates world-record magnetic field

The compact coil could lead to a new generation of magnets for biomedical research, nuclear fusion reactors and many applications in between.


Electron (or 'Hole') Pairs May Survive Effort to Kill Superconductivity

Emergence of unusual metallic state supports role of "charge stripes" in formation of charge-carrier pairs essential to resistance-free flow of electrical current.


Rare "Lazarus Superconductivity" Observed in Promising Material

In a uranium-based compound once dismissed as boring, scientists watched superconductivity arise, perish, then return to life under the influence of high magnetic fields.


New Magnet Design Aces First Test

The successful test of concept shows that the novel design, using a high-temperature superconductor, could help power tomorrow's particle accelerators, fusion machines and research magnets.


MagLab Awarded $1.5 Million to Develop Better Superconductors

Grant from the U.S. Department of Energy will further research that will help make the next generation of high-energy particle accelerators.


MagLab Superconductivity Expert Elected Fellow of Royal Academy of Engineering

David Larbalestier is the first Florida State faculty member ever to receive the honor.


New Research on Superconductivity in Twisted Bilayer Graphene

A story of synergistic science showcases how theory and experimental research teamed up to yield first direct evidence of the nature of superconductivity in a promising material called magic-angle twisted bilayer graphene.


World's Strongest Superconducting Magnet Open for Science

Made with high-temperature superconductors, the National MagLab's newest instrument offers researchers strength and stability to explore quantum materials.


Improving High-Temperature Superconductor Wire Performance

New research to understand how processing impacts bismuth-based superconducting wires could help power future magnets or particle accelerators.


NSF Grant Funds New 40T Superconducting Magnet Design

The world's next most powerful superconducting magnet will be designed at the National High Magnetic Field Laboratory.


New Material Could be Two Superconductors in One

New research has potential applications in quantum computing and introduces a new way to measure the secrets of superconductivity.


Magnetism Helps Electrons Vanish in High-Temp Superconductors

MagLab users have discovered that magnetism is key to understanding the behavior of electrons in high-temperature superconductors.


Mini Magnet Packs World-Record, One-Two Punch

Game-changing technology may hold the key to ever-stronger magnets needed by scientists.


New Approach to Building Magnets Yields New World Record

No insulation? No problem! In fact, by challenging the conventions of magnet making, MagLab engineers created a first-of-its-kind magnet that has only just begun to make records.


Scientists Break Superconductor Record at MagLab

A new record for a trapped field in a superconductor could herald the arrival of materials in a broad range of fields.


Research at MagLab Demonstrates Resilience of New Superconductor

The new superconducting material, called potassium tantalate, is capable of withstanding substantial magnetic fields.


Amplified Impact: New insight on how small strain affects twisted bilayer graphene

Researchers now have a better understanding of how even a slight tug changes the marvel material.


MagLab’s Chief Scientist Recognized with Prestigious Oersted Medal

The award recognizes those who've had an "outstanding, widespread, and lasting impact on the teaching of physics."


How MagLab is Helping to Upgrade the World’s Largest Particle Accelerator

A team of MagLab scientists has been working on the superconducting wires for new electromagnets that will improve physics research at the Large Hadron Collider.


Distinguished Physicist Kathleen Amm Named Director of the National High Magnetic Field Laboratory

Dr. Amm to oversee world's largest and highest-powered magnet lab. 


New Magnet-Making Tool

Two scientists put their heads together and created a machine that speeds along magnet production.


Beating the Heat Treatment Problem

Looking for ways to make better superconductors for the next-generation particle accelerators, a young scientist homed in on how they were heat-treated. He was getting warmer.


BiSCCO Breakthrough

MagLab experts fine-tuned a furnace for pressure-cooking a novel superconducting magnet. Now they're about to build its big brother.


The Long Winding Road

Several materials are in the running to build the next generation of superconducting magnets. Which will emerge the victor?


Meet Ingrid Stolt

What's it like to be a remote user at the National MagLab? Learn from this frequent MagLab user who performed experiments on the 32T from across the country. 


Meet Nicolas Doiron-Leyraud

Nicolas Doiron-Leyraud of Canada's Université de Sherbrooke talks about his recent experiments on cuprate superconductors, why he chose physics over philosophy, and what makes the MagLab a great place to do science.


Next-Generation Magnet

One of the best tools for testing new materials for the next generation of research magnets is a MagLab magnet.


An Oxide Sandwich

Two researchers play with nanostructures in a fun, fertile physics playground: the space between two things.


Behind Laura Greene

Hired in 2015 as chief scientist, this eminent physicist brings a dynamic array of talents to the MagLab.



Last modified on 10 August 2022