Several magnets that are part of the user program — SCM1 and SCM2, Cells 9, 12 and 15 — have cryogenic systems installed with probes that conveniently allow for “plug and play” measurements using 8- and 16-pin connectors. Many users choose to mount samples on these platforms at their home institutions so they are prepared when they arrive at the MagLab. The direction of the applied field of the magnets can be reversed for Hall effect measurements and rotation probes are available for determining the angular dependence of the magnetoresistance.
Images & Sample Data
Click on images to view a larger version, to download or to view more details.
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Two samples connected with silver epoxy and gold wire. Two samples connected with silver epoxy and gold wire.
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In-plane resistivity ρa vs temperature for slightly overdoped Ba(Fe1−xNix )2As2. In-plane resistivity ρa vs temperature for slightly overdoped Ba(Fe1−xNix )2As2.
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Magnetoresistance of a CaMnBi2 single crystal to 35 T. Magnetoresistance of a CaMnBi2 single crystal to 35 T.
https://nationalmaglab.org/user-facilities/dc-field/dcfield-techniques/ac-conductivity-dc#sigProId8bb512fcbf
Instrumentation
Resistive Magnets
- 30 Tesla, cell 2
- 31 Tesla, cell 7
- 31 Tesla, cell 9
- 35 Tesla, cell 8
- 35 Tesla, cell 12
- 36 Tesla, cell 14
- 45 Tesla, cell 15
Superconducting Magnets
- Stanford Research 830 and Signal Recovery 7265 lock-in amplifiers
- Stanford Research 554 transformer pre-amp
- Stanford Research 560 voltage pre-amp
- Lakeshore 370 resistance bridge
Related Publications
C. Liu et al., Observation of an antiferromagnetic quantum critical point in high-purity LaNiO3, Nature Communications, 11, 1402 (2020) Read online
C. Zhang et al., Quantum Hall effect based on Weyl orbits in Cd3As2, Nature, 65, 331-336 (2019) Read online
A.F. Gubkin et al., Field-induced magnetic phase transitions and metastable states in Tb3Ni, Physical Review B, 97, 134425 (2018) Read online
J. Murphy, et al., Angular-dependent upper critical field of overdoped Ba(Fe1−xNix)2As2, Phys. Rev. B (2013) Read online
K. Wang, et al., Two-dimensional Dirac fermions and quantum magnetoresistance in CaMnBi2, Phys. Rev. B - Rapid Comm. 85 (2012) Read online
K. Wang, et al., Quantum transport of two-dimensional Dirac fermions in SrMnBi2, Phys. Rev. B – Rapid Comm. 84 (2011) Read online
Staff Contacts
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