Observation of cyclotron resonance and measurement of the hole mass in optimally-doped La$_{2-x}$Sr$_{x}$CuO$_4$

K. W. Post; A. Legros; D. G. Rickel; J. Singleton; R. D. McDonald; Xi He; I. Bozovic; X. Xu; X. Shi; N. P. Armitage; S. A. Crooker

doi:10.1103/physrevb.103.134515

arXiv · 2006.09131

Observation of cyclotron resonance and measurement of the hole mass in optimally-doped La$_{2-x}$Sr$_{x}$CuO$_4$

K. W. Post·A. Legros·D. G. Rickel·J. Singleton·R. D. McDonald·Xi He·I. Bozovic·X. Xu·X. Shi·N. P. Armitage·S. A. Crooker

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Abstract

Using time-domain terahertz spectroscopy in pulsed magnetic fields up to 31 T, we measure the terahertz optical conductivity in an optimally-doped thin film of the high temperature superconducting cuprate La$_{1.84}$Sr$_{0.16}$CuO$_4$. We observe systematic changes in the circularly-polarized complex optical conductivity that are consistent with cyclotron absorption of p-type charge carriers characterized by a cyclotron mass of $4.9\pm 0.8$ $m_{\rm e}$, and a scattering rate that increases with magnetic field. These results open the door to studies aimed at characterizing the degree to which electron-electron interactions influence carrier masses in cuprate superconductors.

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K. W. Post, A. Legros, D. G. Rickel, J. Singleton, R. D. McDonald, Xi He, I. Bozovic, X. Xu, X. Shi, N. P. Armitage, S. A. Crooker. 2020-06-16. Observation of cyclotron resonance and measurement of the hole mass in optimally-doped La$_{2-x}$Sr$_{x}$CuO$_4$. https://doi.org/10.1103/physrevb.103.134515

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