Anisotropic enhancement of superconductivity in heavy-ion irradiated (K, Ba)BiO3

C. Marcenat; S. Blanchard; J. Marcus; L. M. Paulius; C. J. Van Der Beek; M. Konczykowski; T. Klein

Anisotropic enhancement of superconductivity in heavy-ion irradiated (K, Ba)BiO₃

C. Marcenat
, S. Blanchard
, J. Marcus
, L. M. Paulius
, C. J. Van Der Beek
, M. Konczykowski
, T. Klein

École Polytechnique

Research output: Contribution to journal › Article › peer-review

Abstract

The compound (K,Ba)BiO₃ is a very interesting system in which H_Cp(T) shows an anomalous positive curvature and is significantly smaller than the field H_Δ deduced from spectroscopic measurements. It is shown that H_Cp is also shifted towards higher temperature in the presence of columnar defects aligned with the external field. The observation that the specific heat anomaly follows the phenomenology of the Bose-glass melting casts serious doubts on the current understanding of the vortex liquid phase in the compound-and probably also in other high T_c cuprates.

Original language	English
Article number	037004
Pages (from-to)	037004/1-037004/4
Journal	Physical Review Letters
Volume	90
Issue number	3
Publication status	Published - 24 Jan 2003

Cite this

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title = "Anisotropic enhancement of superconductivity in heavy-ion irradiated (K, Ba)BiO3",

abstract = "The compound (K,Ba)BiO3 is a very interesting system in which HCp(T) shows an anomalous positive curvature and is significantly smaller than the field HΔ deduced from spectroscopic measurements. It is shown that HCp is also shifted towards higher temperature in the presence of columnar defects aligned with the external field. The observation that the specific heat anomaly follows the phenomenology of the Bose-glass melting casts serious doubts on the current understanding of the vortex liquid phase in the compound-and probably also in other high Tc cuprates.",

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AU - Marcenat, C.

AU - Blanchard, S.

AU - Marcus, J.

AU - Paulius, L. M.

AU - Van Der Beek, C. J.

AU - Konczykowski, M.

AU - Klein, T.

PY - 2003/1/24

Y1 - 2003/1/24

N2 - The compound (K,Ba)BiO3 is a very interesting system in which HCp(T) shows an anomalous positive curvature and is significantly smaller than the field HΔ deduced from spectroscopic measurements. It is shown that HCp is also shifted towards higher temperature in the presence of columnar defects aligned with the external field. The observation that the specific heat anomaly follows the phenomenology of the Bose-glass melting casts serious doubts on the current understanding of the vortex liquid phase in the compound-and probably also in other high Tc cuprates.

AB - The compound (K,Ba)BiO3 is a very interesting system in which HCp(T) shows an anomalous positive curvature and is significantly smaller than the field HΔ deduced from spectroscopic measurements. It is shown that HCp is also shifted towards higher temperature in the presence of columnar defects aligned with the external field. The observation that the specific heat anomaly follows the phenomenology of the Bose-glass melting casts serious doubts on the current understanding of the vortex liquid phase in the compound-and probably also in other high Tc cuprates.

M3 - Article

AN - SCOPUS:0037462941

SN - 0031-9007

VL - 90

SP - 037004/1-037004/4

JO - Physical Review Letters

JF - Physical Review Letters

IS - 3

M1 - 037004

ER -

Anisotropic enhancement of superconductivity in heavy-ion irradiated (K, Ba)BiO3

Abstract

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Anisotropic enhancement of superconductivity in heavy-ion irradiated (K, Ba)BiO₃