Outline
DOI: 10.1063/5.0323635 ISSN: 0034-6748
Broadband terahertz time-domain spectroscopy of quantum materials in a dilution refrigerator
R. J. Vukelich, T. Norden, T. G. Hastings, M. Giri, M. Caldwell, S. Forutan, J. L. Reno, D. J. HiltonWe have constructed a terahertz time domain spectroscopy system using a Bluefors dilution refrigerator with a 7 T split-coil magnet. Using a gallium arsenide single quantum well sample, terahertz waveforms were measured at 145 mK in a magnetic field range from 0 to 6 T to measure cyclotron resonance. The effective mass was found to be 0.073me, which is larger than the commonly accepted bulk value of 0.068me.
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