Electrically Detected Magnetic Resonance (EDMR)

Normally Electron Paramagnetic Resonance is measured by measuring the absorption of the microwaves. In some conducting samples the absorption of resonant spins can be measured by detecting a change in electrical conduction when resonant microwaves are applied to the sample. This technique is then typically referred to as Electrically Detected Magnetic Resonance (EDMR).

Normally Electron Paramagnetic Resonance is measured by measuring the absorption of the microwaves. In some conducting samples the absorption of resonant spins can be measured by detecting a change in electrical conduction when resonant microwaves are applied to the sample. This technique is then typically referred to as Electrically Detected Magnetic Resonance (EDMR). A necessary ingredient is a spin dependent conduction pathway, but it can greatly enhance the sensitivity, and single spin detection has been observed in select cases. The high electron spin polarization and a setup without resonator make this technique especially efficient at high frequencies and fields.

Instrumentation

  • Compatible Spectrometers

  • Available Equipment

  • Stanford Research Low-noise current amplifier (SR570)
  • Keithley 6220 Current source

Images

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Related Publications

Lo, C.C., et al, All-Electrical Nuclear Spin Polarization of Donors in Silicon, Phys. Rev. Lett., 110 (2013) Read online 


McCamey, D.R., et al, Electronic Spin Storage in an Electrically Readable Nuclear Spin Memory with a Lifetime > 100 Seconds, Science, 330 (2010) Read online 


Morley, G.W., et al, Long-Lived Spin Coherence in Silicon with an Electrical Spin Trap Readout, Phys. Rev. Lett., 101 (2008) Read online 


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Last modified on 15 October 2014