Dynamical Spin Polarization of Excess Quasiparticles in Superconductors

Julia S. Meyer, Manuel Houzet, Yuli V. Nazarov

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
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Abstract

We show that the annihilation dynamics of excess quasiparticles in superconductors may result in the spontaneous formation of large spin-polarized clusters. This presents a novel scenario for spontaneous spin polarization. We estimate the relevant scales for aluminum, finding the feasibility of clusters with total spin S≃10^{4}ℏ that could be spread over microns. The fluctuation dynamics of such large spins may be detected by measuring the flux noise in a loop hosting a cluster.

Original languageEnglish
Article number097006
Number of pages5
JournalPhysical Review Letters
Volume125
Issue number9
DOIs
Publication statusPublished - 2020

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