Spontaneous symmetry-breaking vortex lattice transitions in pure niobium

Laver, M. and Forgan, E.M. and Brown, S.P. and Charalambous, D. and Fort, D. and Bowell, C. and Ramos, Silvia and Lycett, R.J. and Christen, D.K. and Kohlbrecher, J. and Dewhurst, C.D. and Cubitt, R. (2006) Spontaneous symmetry-breaking vortex lattice transitions in pure niobium. Physical Review Letters, 96 (16). ISSN 0031-9007. E-ISSN 1079-7114. (doi:https://doi.org/10.1103/PhysRevLett.96.167002) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
https://doi.org/10.1103/PhysRevLett.96.167002

Abstract

We report an extensive investigation of magnetic vortex lattice (VL) structures in single crystals of pure niobium with the magnetic field applied parallel to a fourfold symmetry axis, so as to induce frustration between the cubic crystal symmetry and hexagonal VL coordination expected in an isotropic situation. We observe new VL structures and phase transitions; all the VL phases observed (including those with an exactly square unit cell) spontaneously break some crystal symmetry. One phase even has the lowest possible symmetry of a two-dimensional Bravais lattice. This is quite unlike the situation in high-Tc or borocarbide superconductors, where VL structures orient along particular directions of high crystal symmetry. The causes of this behavior are discussed. © 2006 The American Physical Society.

Item Type: Article
Uncontrolled keywords: Crystal lattices, Niobium, Phase transitions, Single crystals, Vortex flow, Borocarbide superconductors, Fourfold symmetry, Magnetic vortex lattice (VL), Structures orient, Crystal symmetry
Subjects: Q Science > QC Physics > QC176 Solid state physics
Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Silvia Ramos
Date Deposited: 05 Dec 2017 22:45 UTC
Last Modified: 07 Dec 2017 10:31 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/46995 (The current URI for this page, for reference purposes)
Ramos, Silvia: https://orcid.org/0000-0003-2725-7706
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