The resonance states around an impurity in dx2-y2-wave superconductors

Hiroki Tsuchiura; Yukio Tanaka; Masao Ogata; Satoshi Kashiwaya

doi:10.1016/S0921-4526(99)01996-1

The resonance states around an impurity in d_x2-y2-wave superconductors

Hiroki Tsuchiura, Yukio Tanaka, Masao Ogata, Satoshi Kashiwaya

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

Abstract

We investigate the local density of states (LDOS) around a nonmagnetic impurity in the superconducting state of the two-dimensional t-t′-J model away from half-filling. The order parameters are determined self-consistently within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. Similar to our previous results of the t-J model near half-filling, the zero-energy peak in the LDOS is also found when the electron-hole symmetry is broken.

Original language	English
Pages (from-to)	427-428
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	284-288
Issue number	PART I
DOIs	https://doi.org/10.1016/S0921-4526(99)01996-1
Publication status	Published - 2000
Externally published	Yes

Keywords

Two-dimensional t-t′-J model
d-wave superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(99)01996-1

Cite this

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title = "The resonance states around an impurity in dx2-y2-wave superconductors",

abstract = "We investigate the local density of states (LDOS) around a nonmagnetic impurity in the superconducting state of the two-dimensional t-t′-J model away from half-filling. The order parameters are determined self-consistently within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. Similar to our previous results of the t-J model near half-filling, the zero-energy peak in the LDOS is also found when the electron-hole symmetry is broken.",

keywords = "Two-dimensional t-t′-J model, d-wave superconductivity",

author = "Hiroki Tsuchiura and Yukio Tanaka and Masao Ogata and Satoshi Kashiwaya",

note = "Funding Information: This work is supported in part by a Grant-in-Aid for Creative Basic Research (08NP1201) of the Ministry from Education, Science Sports and Culture. Numerical computation in this work was carried out at the Yukawa Institute Computer Facility and the Supercomputer Center, Institute for Solid State Physics, University of Tokyo, Japan.",

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T1 - The resonance states around an impurity in dx2-y2-wave superconductors

AU - Tsuchiura, Hiroki

AU - Tanaka, Yukio

AU - Ogata, Masao

AU - Kashiwaya, Satoshi

N1 - Funding Information: This work is supported in part by a Grant-in-Aid for Creative Basic Research (08NP1201) of the Ministry from Education, Science Sports and Culture. Numerical computation in this work was carried out at the Yukawa Institute Computer Facility and the Supercomputer Center, Institute for Solid State Physics, University of Tokyo, Japan.

PY - 2000

Y1 - 2000

N2 - We investigate the local density of states (LDOS) around a nonmagnetic impurity in the superconducting state of the two-dimensional t-t′-J model away from half-filling. The order parameters are determined self-consistently within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. Similar to our previous results of the t-J model near half-filling, the zero-energy peak in the LDOS is also found when the electron-hole symmetry is broken.

AB - We investigate the local density of states (LDOS) around a nonmagnetic impurity in the superconducting state of the two-dimensional t-t′-J model away from half-filling. The order parameters are determined self-consistently within the Gutzwiller approximation and the Bogoliubov-de Gennes theory. Similar to our previous results of the t-J model near half-filling, the zero-energy peak in the LDOS is also found when the electron-hole symmetry is broken.

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KW - d-wave superconductivity

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