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h/2e Flux Trapping without Superconductivity
Abstract
Recently, it was shown by Komargodski and Popov [arXiv:2601.09847] that ordinary metals threaded with an Aharonov-Bohm solenoid exclusively trap either 0 or h/2e flux. The latter value is familiar in the superconducting setting, yet we find that it holds in ordinary metals as well, with no condensate or pairing necessary. We provide an analytic explanation for the flux trapping, and extend the results to the cases of finite temperature, time-reversal invariant potentials, and lattice regularization, where we find that the flux remains trapped at 0 and h/2e.
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BibTeX
@misc{lancer2026flux,
title = {{$h/2e$ Flux Trapping without Superconductivity}},
author = {Will Lancer},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.41058},
eprint = {2610.41058},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.41058},
}
RIS
TY - UNPB
TI - h/2e Flux Trapping without Superconductivity
AU - Will Lancer
PY - 2026
DA - 2026/10/29
PB - arXiv
DO - 10.48550/arxiv.2610.41058
UR - https://arxiv.org/abs/2610.41058
AB - Recently, it was shown by Komargodski and Popov [arXiv:2601.09847] that ordinary metals threaded with an Aharonov-Bohm solenoid exclusively trap either 0 or h/2e flux. The latter value is familiar in the superconducting setting, yet we find that it holds in ordinary metals as well, with no condensate or pairing necessary. We provide an analytic explanation for the flux trapping, and extend the results to the cases of finite temperature, time-reversal invariant potentials, and lattice regularization, where we find that the flux remains trapped at 0 and h/2e.
ER -