Zero-bias peak in tunneling spectra of high- Tc superconductors and its splitting

Y. Asano; R. Sekiguchi; Y. Tanaka; H. Tsuchiura; S. Kashiwaya

doi:10.1016/j.physc.2004.01.039

Zero-bias peak in tunneling spectra of high- T_c superconductors and its splitting

Y. Asano, R. Sekiguchi, Y. Tanaka, H. Tsuchiura, S. Kashiwaya

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

Abstract

Effects of impurities on the conductance in normal-metal/d-wave superconductor junctions are discussed. By using the single-site approximation, it is shown that the impurity scattering causes the split of the zero-bias conductance peak (ZBCP). So far, the split of the ZBCP at the zero magnetic field has been believed to be a strong evidence of the broken time reversal symmetry states at a surface of a high-T_c superconductor. However we conclude that the impurity scattering is also responsible for the split of the ZBCP.

Original language	English
Pages (from-to)	157-161
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	412-414
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physc.2004.01.039
Publication status	Published - 2004 Oct 1
Externally published	Yes

Keywords

Interfacial roughness
Unconventional superconductor
Zero-bias conductance peak
Zero-energy states

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physc.2004.01.039

Cite this

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abstract = "Effects of impurities on the conductance in normal-metal/d-wave superconductor junctions are discussed. By using the single-site approximation, it is shown that the impurity scattering causes the split of the zero-bias conductance peak (ZBCP). So far, the split of the ZBCP at the zero magnetic field has been believed to be a strong evidence of the broken time reversal symmetry states at a surface of a high-Tc superconductor. However we conclude that the impurity scattering is also responsible for the split of the ZBCP.",

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author = "Y. Asano and R. Sekiguchi and Y. Tanaka and H. Tsuchiura and S. Kashiwaya",

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T1 - Zero-bias peak in tunneling spectra of high- Tc superconductors and its splitting

AU - Asano, Y.

AU - Sekiguchi, R.

AU - Tanaka, Y.

AU - Tsuchiura, H.

AU - Kashiwaya, S.

PY - 2004/10/1

Y1 - 2004/10/1

N2 - Effects of impurities on the conductance in normal-metal/d-wave superconductor junctions are discussed. By using the single-site approximation, it is shown that the impurity scattering causes the split of the zero-bias conductance peak (ZBCP). So far, the split of the ZBCP at the zero magnetic field has been believed to be a strong evidence of the broken time reversal symmetry states at a surface of a high-Tc superconductor. However we conclude that the impurity scattering is also responsible for the split of the ZBCP.

AB - Effects of impurities on the conductance in normal-metal/d-wave superconductor junctions are discussed. By using the single-site approximation, it is shown that the impurity scattering causes the split of the zero-bias conductance peak (ZBCP). So far, the split of the ZBCP at the zero magnetic field has been believed to be a strong evidence of the broken time reversal symmetry states at a surface of a high-Tc superconductor. However we conclude that the impurity scattering is also responsible for the split of the ZBCP.

KW - Interfacial roughness

KW - Unconventional superconductor

KW - Zero-bias conductance peak

KW - Zero-energy states

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