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arXiv · 2508.05030

Aharonov-Bohm interference from coherent spin-polarized edge transport in Fe(Te,Se) superconducting rings

Mohammad Javadi Balakan·Shiva Heidari·Genda Gu·Qiang Li·Kenji Watanabe·Takashi Taniguchi·Ji Ung Lee
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Abstract

We report the coexistence of Aharonov-Bohm and Little-Parks oscillations in mesoscopic Fe(Te,Se) rings. The magnetoresistance shows two distinct periodicities: an $h/e$ component from ballistic edge interference and an $h/2e$ component from fluxoid quantization of Cooper pairs. Aharonov-Bohm oscillations persist deep into the superconducting phase, exhibit current-field symmetry, and follow a temperature dependence captured by a helical Luttinger liquid model, consistent with edge states in a topological superconductor.

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Mohammad Javadi Balakan, Shiva Heidari, Genda Gu, Qiang Li, Kenji Watanabe, Takashi Taniguchi, Ji Ung Lee. 2025-08-07. Aharonov-Bohm interference from coherent spin-polarized edge transport in Fe(Te,Se) superconducting rings. https://arxiv.org/abs/2508.05030

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