Vortex matter stabilized by many-body interactions

Titelangaben

Wolf, Sebastian ; Vagov, Alexei ; Shanenko, A. A. ; Axt, Vollrath Martin ; Aguiar, J. Albino:
Vortex matter stabilized by many-body interactions.
In: Physical Review B. Bd. 96 (2017) Heft 14 . - 144515.
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.96.144515

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Abstract

This work investigates interactions of vortices in superconducting materials between standard types I and II, in the domain of the so-called intertype (IT) superconductivity. Contrary to common expectations, the many-body (many-vortex) contribution is not a correction to the pair-vortex interaction here but plays a crucial role in the formation of the IT vortex matter. In particular, the many-body interactions stabilize vortex clusters that otherwise could not exist. Furthermore, clusters with large numbers of vortices become more stable when approaching the boundary between the intertype domain and type I. This indicates that IT superconductors develop a peculiar unconventional type of the vortex matter governed by the many-body interactions of vortices.