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Observation of a first-order phase transition deep within the vortex-solid region of YBa2Cu3O7


Reibelt, M; Weyeneth, S; Erb, A; Schilling, A (2011). Observation of a first-order phase transition deep within the vortex-solid region of YBa2Cu3O7. Superconductor Science and Technology, 24(10):105019.

Abstract

We have investigated the magnetic phase diagram of a fully oxygenated detwinned YBa2Cu3O7 single crystal by means of magneto-caloric and magnetization measurements, and found thermodynamic evidence for a temperature dependent first-order phase-transition line deep within the vortex-solid region. The associated discontinuities in the entropy are apparently proportional to the magnetic flux density, which may hint at a structural transition of the vortex lattice.

We have investigated the magnetic phase diagram of a fully oxygenated detwinned YBa2Cu3O7 single crystal by means of magneto-caloric and magnetization measurements, and found thermodynamic evidence for a temperature dependent first-order phase-transition line deep within the vortex-solid region. The associated discontinuities in the entropy are apparently proportional to the magnetic flux density, which may hint at a structural transition of the vortex lattice.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2011
Deposited On:29 Nov 2011 14:08
Last Modified:05 Apr 2016 15:07
Publisher:Institute of Physics Publishing
ISSN:0953-2048
Publisher DOI:10.1088/0953-2048/24/10/105019
Permanent URL: http://doi.org/10.5167/uzh-51348

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