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 . We observe systematic changes in the circularly polarized complex optical conductivity that are consistent with cyclotron absorption of -type charge carriers characterized by a cyclotron mass of 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.
- Received 4 June 2020
- Revised 16 March 2021
- Accepted 13 April 2021
DOI:https://doi.org/10.1103/PhysRevB.103.134515
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