Vortex tunneling spectra of high-Tc superconductors based on the t-J model

Hiroki Tsuchiura; Shingo Uno; Yukio Tanaka; Masao Ogata; Jun Ichiro Inoue; Satoshi Kashiwaya

doi:10.1016/S0921-4534(01)00980-7

Vortex tunneling spectra of high-T_c superconductors based on the t-J model

Hiroki Tsuchiura, Shingo Uno, Yukio Tanaka, Masao Ogata, Jun Ichiro Inoue, Satoshi Kashiwaya

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

Abstract

The local density of states and the c-axis tunneling spectrum around a vortex core and a nonmagnetic impurity in high-T_c superconductors are studied using the two-dimensional t-J model and considering the anisotropy of the c-axis tunneling matrix elements. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. It is shown that neither the anisotropic matrix elements nor d+is state account for the recent STS data on the vortex core of Bi₂Sr₂CaCu₂O_8+δ.

Original language	English
Pages (from-to)	20-23
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	367
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4534(01)00980-7
Publication status	Published - 2002 Feb 15
Externally published	Yes

Keywords

Impurity
Local density of states
Vortex core
t-J model

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/S0921-4534(01)00980-7

Cite this

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title = "Vortex tunneling spectra of high-Tc superconductors based on the t-J model",

abstract = "The local density of states and the c-axis tunneling spectrum around a vortex core and a nonmagnetic impurity in high-Tc superconductors are studied using the two-dimensional t-J model and considering the anisotropy of the c-axis tunneling matrix elements. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. It is shown that neither the anisotropic matrix elements nor d+is state account for the recent STS data on the vortex core of Bi2Sr2CaCu2O8+δ.",

keywords = "Impurity, Local density of states, Vortex core, t-J model",

author = "Hiroki Tsuchiura and Shingo Uno and Yukio Tanaka and Masao Ogata and Inoue, {Jun Ichiro} and Satoshi Kashiwaya",

note = "Funding Information: The authors wish to thank I. Iguchi and H. Itoh for their useful discussions. This work is supported in part by the Core Research for Evolutional Science and Technology (CREST) and a Grant-in-Aid for Creative Basic Research (08NP1201) of the Ministry from Education, Science, Sports and Culture. Numerical computation in this work was partially carried out at the Yukawa Institute Computer Facility, and the Supercomputer Center, Institute for Solid State Physics, University of Tokyo.",

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doi = "10.1016/S0921-4534(01)00980-7",

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T1 - Vortex tunneling spectra of high-Tc superconductors based on the t-J model

AU - Tsuchiura, Hiroki

AU - Uno, Shingo

AU - Tanaka, Yukio

AU - Ogata, Masao

AU - Inoue, Jun Ichiro

AU - Kashiwaya, Satoshi

N1 - Funding Information: The authors wish to thank I. Iguchi and H. Itoh for their useful discussions. This work is supported in part by the Core Research for Evolutional Science and Technology (CREST) and a Grant-in-Aid for Creative Basic Research (08NP1201) of the Ministry from Education, Science, Sports and Culture. Numerical computation in this work was partially carried out at the Yukawa Institute Computer Facility, and the Supercomputer Center, Institute for Solid State Physics, University of Tokyo.

PY - 2002/2/15

Y1 - 2002/2/15

N2 - The local density of states and the c-axis tunneling spectrum around a vortex core and a nonmagnetic impurity in high-Tc superconductors are studied using the two-dimensional t-J model and considering the anisotropy of the c-axis tunneling matrix elements. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. It is shown that neither the anisotropic matrix elements nor d+is state account for the recent STS data on the vortex core of Bi2Sr2CaCu2O8+δ.

AB - The local density of states and the c-axis tunneling spectrum around a vortex core and a nonmagnetic impurity in high-Tc superconductors are studied using the two-dimensional t-J model and considering the anisotropy of the c-axis tunneling matrix elements. The order parameters are determined in a self-consistent way within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. It is shown that neither the anisotropic matrix elements nor d+is state account for the recent STS data on the vortex core of Bi2Sr2CaCu2O8+δ.

KW - Impurity

KW - Local density of states

KW - Vortex core

KW - t-J model

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JO - Physica C: Superconductivity and its Applications

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