Microwave-Induced Optomagnetism in High-Temperature Superconductors
Abstract
We report the first experimental observation of a steady-state, microwave-driven inverse Faraday effect in a high-temperature superconductor. Circularly polarized microwave radiation generates a helicity-dependent response in an epitaxial YBa2Cu3O7−δ film, detected using homodyne Hall transport. The optomagnetic response emerges exclusively below Tc, vanishes in the normal state, and exhibits no power-dependent counterpart under linearly polarized excitation. The effective optomagnetic conversion reaches 1.75 T/(W cm−2), surpassing optical benchmarks by several orders of magnitude. At higher microwave powers, the signal collapses when the self-generated field exceeds Bc1, marking the onset of a vortex phase-slip regime, and subsequently re-emerges at mode-locked vortex-washboard harmonics. These results establish steady-state microwave optomagnetism as a route to contactless, non-inductive magnetic control and nonequilibrium vortex spectroscopy in superconducting quantum systems.
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BibTeX
@misc{dhillon2026microwaveinduced,
title = {{Microwave-Induced Optomagnetism in High-Temperature Superconductors}},
author = {Anoop Dhillon and Amir Borji and Hamed Majedi},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.31127},
eprint = {2608.31127},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.31127},
}
RIS
TY - UNPB
TI - Microwave-Induced Optomagnetism in High-Temperature Superconductors
AU - Anoop Dhillon
AU - Amir Borji
AU - Hamed Majedi
PY - 2026
DA - 2026/08/31
PB - arXiv
DO - 10.48550/arxiv.2608.31127
UR - https://arxiv.org/abs/2608.31127
AB - We report the first experimental observation of a steady-state, microwave-driven inverse Faraday effect in a high-temperature superconductor. Circularly polarized microwave radiation generates a helicity-dependent response in an epitaxial YBa_2Cu_3O_7−δ film, detected using homodyne Hall transport. The optomagnetic response emerges exclusively below T_c, vanishes in the normal state, and exhibits no power-dependent counterpart under linearly polarized excitation. The effective optomagnetic conversion reaches 1.75 T/(W cm^−2), surpassing optical benchmarks by several orders of magnitude. At higher microwave powers, the signal collapses when the self-generated field exceeds B_c1, marking the onset of a vortex phase-slip regime, and subsequently re-emerges at mode-locked vortex-washboard harmonics. These results establish steady-state microwave optomagnetism as a route to contactless, non-inductive magnetic control and nonequilibrium vortex spectroscopy in superconducting quantum systems.
ER -