Cyclotron resonance and measurements of the hole mass in La<sub>2-x</sub>Sr<sub>x</sub>CuO<sub>4 </sub>films

POSTER

Abstract

Using time-domain terahertz spectroscopy in pulsed magnetic fields up to 31 T, we measure the terahertz optical conductivity over a broad doping range of cuprate La2-xSrxCuO4 thin films. We observe systematic changes in the circularly polarized complex optical conductivity that are consistent with cyclotron absorption of p-type charge carriers.   We have measured the cyclotron mass and field dependent changes to the scattering rates over a broad doping.   We connect our observations to extant theory of the normal state electronic structure of these compounds. 

*Work at the National High Magnetic Field Laboratory was supported by National Science Foundation (NSF) Grant No. DMR-1644779, the state of Florida, and the U.S. Department of Energy (DOE). J.S. and S.A.C. acknowledge support from the US DOE Office of Basic Energy Sciences Science of 100T program. A.L. and N.P.A. were supported by the Quantum Materials program at the Canadian Institute for Advanced Research and NSF Grant No. DMR 1905519. Work at Brookhaven National Laboratory was supported by the DOE, Basic Energy Sciences, Materials Sciences and Engineering Division. X.H. is supported by the Gordon and Betty Moore Foundation's EPiQS Initiative through Grant No. GBMF9074.

Publication: K. W. Post, A. Legros, D. G. Rickel, J. Singleton, R. D. McDonald, Xi He, I. Božovic, X. Xu, X. Shi, N. P. Armitage, and S. A. Crooker, Phys. Rev. B 103, 134515 (2021).

A. Legros et al. in preparation (2021).

Presenters

  • Peter N Armitage

    • Johns Hopkins University

Authors

  • Peter N Armitage

    • Johns Hopkins University

  • Anaelle Legros

    • Johns Hopkins University

  • Scott A Crooker

    • Los Alamos Natl Lab
    • National High Magnetic Field Laboratory, Los Alamos

  • Kirk W Post

    • Los Alamos National Laboratory

  • Ivan Božović

    • Brookhaven National Laboratory
    • Department of Chemistry, Yale University; Energy Sciences Institute, Yale University;Department of Mechanical Engineering & Materials Science, Yale University

  • Xi He

    • Brookhaven National Laboratory

  • John Singleton

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Ross MacDonald

    • Los Alamos