Large Diamagnetism and Electromagnetic Duality in Two-dimensional Dirac Electron System
Mesoscale and Nanoscale Physics
2022-01-20 v2 Strongly Correlated Electrons
Abstract
A Dirac electron system in solids mimics a relativistic quantum physics that is compatible with Maxwell's equations, by which we anticipate unified electromagnetic responses. We find a large orbital diamagnetism only along the interplane direction and the nearly temperature-independent conductance of the order of e2/h for the new 2D Dirac organic conductor, a-(BETS)2I3. Distinct from conventional electrons in solids whose nonrelativistic effects bifurcate electric and magnetic responses, the observed orbital diamagnetism scales the electrical conductivity for a wide temperature range. This demonstrates that an electromagnetic duality that is valid only within the relativistic framework is revived in solids.
Cite
@article{arxiv.2104.13547,
title = {Large Diamagnetism and Electromagnetic Duality in Two-dimensional Dirac Electron System},
author = {S. Fujiyama and H. Maebashi and N. Tajima and T. Tsumuraya and H-B. Cui and M. Ogata and R. Kato},
journal= {arXiv preprint arXiv:2104.13547},
year = {2022}
}