Quasiparticle tunneling properties of YBa2Cu3O7-x bicrystals grown by liquid phase epitaxy

Yu Eltsev; K. Nakao; Y. Yamada; I. Hirabayshi; N. Koshizuka; M. Murakami

doi:10.1016/S0921-4534(02)01703-3

Quasiparticle tunneling properties of YBa₂Cu₃O_7-x bicrystals grown by liquid phase epitaxy

Yu Eltsev, K. Nakao, Y. Yamada, I. Hirabayshi, N. Koshizuka, M. Murakami

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

Abstract

Transport properties and tunneling characteristics of 45° asymmetric grain boundary junctions, fabricated in YBa₂Cu₃O_7-δ films grown by liquid phase epitaxy, have been studied. For selected samples, with very low zero field critical current density, a conductance peak in the dI/dV vs V curves has been observed below T_c. The position and amplitude of this peak depend on the magnetic field and temperature, indicating its superconducting origin. Strong oxygen doping effect on the gap energy was also found.

Original language	English
Pages (from-to)	1306-1309
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	378-381
Issue number	PART 2
DOIs	https://doi.org/10.1016/S0921-4534(02)01703-3
Publication status	Published - 2002 Oct 1
Externally published	Yes

Keywords

Anisotropy
MgB
Single crystal
Upper critical field

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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T1 - Quasiparticle tunneling properties of YBa2Cu3O7-x bicrystals grown by liquid phase epitaxy

AU - Eltsev, Yu

AU - Nakao, K.

AU - Yamada, Y.

AU - Hirabayshi, I.

AU - Koshizuka, N.

AU - Murakami, M.

PY - 2002/10/1

Y1 - 2002/10/1

N2 - Transport properties and tunneling characteristics of 45° asymmetric grain boundary junctions, fabricated in YBa2Cu3O7-δ films grown by liquid phase epitaxy, have been studied. For selected samples, with very low zero field critical current density, a conductance peak in the dI/dV vs V curves has been observed below Tc. The position and amplitude of this peak depend on the magnetic field and temperature, indicating its superconducting origin. Strong oxygen doping effect on the gap energy was also found.

AB - Transport properties and tunneling characteristics of 45° asymmetric grain boundary junctions, fabricated in YBa2Cu3O7-δ films grown by liquid phase epitaxy, have been studied. For selected samples, with very low zero field critical current density, a conductance peak in the dI/dV vs V curves has been observed below Tc. The position and amplitude of this peak depend on the magnetic field and temperature, indicating its superconducting origin. Strong oxygen doping effect on the gap energy was also found.

KW - Anisotropy

KW - MgB

KW - Single crystal

KW - Upper critical field

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