Irreversible Magnetization Deep in the Vortex-Liquid State of a 2D Superconductor at High Magnetic Fields
T. Maniv, V. Zhuravlev, J. Wosnitza, and J. Hagel
TL;DR
This paper reveals an unusual vortex-liquid state in a 2D superconductor at high magnetic fields, characterized by weak hysteresis loops caused by collectively pinned vortex crystallites amidst easily sliding vortex chains.
Contribution
It introduces the concept of a vortex-liquid state with collective pinning of crystallites, explaining weak hysteresis deep in the vortex-liquid phase of 2D superconductors.
Findings
Weak magnetization hysteresis loops observed deep in the vortex-liquid state
Vortex-liquid state consists of pinned crystallites of vortex chains
Unusual vortex dynamics with collective pinning mechanisms
Abstract
The remarkable phenomenon of weak magnetization hysteresis loops, observed recently deep in the vortex-liquid state of a nearly two-dimensional (2D) superconductor at low temperatures, is shown to reflect the existence of an unusual vortex-liquid state, consisting of collectively pinned crystallites of easily sliding vortex chains.
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