Conductivity if the interface between La₀.₇Ca(Sr)₀.₃MnO₃ and underdoped YBa₂Cu₃O₇δ

Pavlo Mikheenko; Radoslav Chakalov; Radka Chakalova; Mark Colclough; Christopher Muirhead

doi:10.1016/j.physc.2004.02.112

Conductivity if the interface between La₀.₇Ca(Sr)₀.₃MnO₃ and underdoped YBa₂Cu₃O₇δ

Pavlo Mikheenko, Radoslav Chakalov, Radka Chakalova, Mark Colclough, Christopher Muirhead

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Abstract

We report resistance/temperature, conductance/voltage and voltage/magnetic field measurements in a range of junctions between collosal magnetoresistive materials and the high temperature superconductor YBa2Cu3O7-delta We identify two forms of behaviour. In one form the resistance of the junction falls monotonically with decreasing temperature and is associated with zero bias conductance peaks. In the other form the resistance rises below some characteristic temperature T-*. In this latter case there is no zero bias conductance peak, but there are peaks in the voltage/magnetic field behaviour below T-*. We tentatively associate T-* with the pseudogap temperature. (C) 2004 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	365-366
Number of pages	2
Journal	Physica C Superconductivity
Volume	408-410
DOIs	https://doi.org/10.1016/j.physc.2004.02.112
Publication status	Published - 1 Aug 2004

Keywords

Andreev reflection
pseudogap
interfaces
spin-polarisation

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10.1016/j.physc.2004.02.112

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title = "Conductivity if the interface between La₀.₇Ca(Sr)₀.₃MnO₃ and underdoped YBa₂Cu₃O₇δ",

abstract = "We report resistance/temperature, conductance/voltage and voltage/magnetic field measurements in a range of junctions between collosal magnetoresistive materials and the high temperature superconductor YBa2Cu3O7-delta We identify two forms of behaviour. In one form the resistance of the junction falls monotonically with decreasing temperature and is associated with zero bias conductance peaks. In the other form the resistance rises below some characteristic temperature T-*. In this latter case there is no zero bias conductance peak, but there are peaks in the voltage/magnetic field behaviour below T-*. We tentatively associate T-* with the pseudogap temperature. (C) 2004 Elsevier B.V. All rights reserved.",

keywords = "Andreev reflection, pseudogap, interfaces, spin-polarisation",

author = "Pavlo Mikheenko and Radoslav Chakalov and Radka Chakalova and Mark Colclough and Christopher Muirhead",

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doi = "10.1016/j.physc.2004.02.112",

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TY - JOUR

T1 - Conductivity if the interface between La₀.₇Ca(Sr)₀.₃MnO₃ and underdoped YBa₂Cu₃O₇δ

AU - Mikheenko, Pavlo

AU - Chakalov, Radoslav

AU - Chakalova, Radka

AU - Colclough, Mark

AU - Muirhead, Christopher

PY - 2004/8/1

Y1 - 2004/8/1

N2 - We report resistance/temperature, conductance/voltage and voltage/magnetic field measurements in a range of junctions between collosal magnetoresistive materials and the high temperature superconductor YBa2Cu3O7-delta We identify two forms of behaviour. In one form the resistance of the junction falls monotonically with decreasing temperature and is associated with zero bias conductance peaks. In the other form the resistance rises below some characteristic temperature T-*. In this latter case there is no zero bias conductance peak, but there are peaks in the voltage/magnetic field behaviour below T-*. We tentatively associate T-* with the pseudogap temperature. (C) 2004 Elsevier B.V. All rights reserved.

AB - We report resistance/temperature, conductance/voltage and voltage/magnetic field measurements in a range of junctions between collosal magnetoresistive materials and the high temperature superconductor YBa2Cu3O7-delta We identify two forms of behaviour. In one form the resistance of the junction falls monotonically with decreasing temperature and is associated with zero bias conductance peaks. In the other form the resistance rises below some characteristic temperature T-*. In this latter case there is no zero bias conductance peak, but there are peaks in the voltage/magnetic field behaviour below T-*. We tentatively associate T-* with the pseudogap temperature. (C) 2004 Elsevier B.V. All rights reserved.

KW - Andreev reflection

KW - pseudogap

KW - interfaces

KW - spin-polarisation

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U2 - 10.1016/j.physc.2004.02.112

DO - 10.1016/j.physc.2004.02.112

M3 - Article

VL - 408-410

SP - 365

EP - 366

JO - Physica C Superconductivity

JF - Physica C Superconductivity

ER -

Conductivity if the interface between La₀.₇Ca(Sr)₀.₃MnO₃ and underdoped YBa₂Cu₃O₇δ

Abstract

Keywords

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