Effect of Zn impurities on the electronic structure of La1.85 Sr0.15 Cu O4 studied by high-resolution angle-resolved photoemission spectroscopy

Kensei Terashima, Takafumi Sato, Kosuke Nakayama, Toshiyuki Arakane, Takashi Takahashi, Maiko Kofu, Kazuma Hirota

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

High-resolution angle-resolved photoemission spectroscopy has been performed on Zn-substituted La1.85 Sr0.15 Cu O4 to study the impurity effect on the electronic structure near the Fermi level. Upon Zn substitution, the kink in the band dispersion at 20 meV and the coherence peak in the off-nodal region in the superconducting state are significantly weakened and, at the same time, additional electronic states systematically evolve inside the superconducting gap. The suppression of the kink with Zn substitution shows a good correspondence to the low-energy incommensurate magnetic excitations.

Original languageEnglish
Article number092501
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number9
DOIs
Publication statusPublished - Mar 4 2008
Externally publishedYes

Fingerprint

Photoelectron spectroscopy
Electronic structure
Substitution reactions
photoelectric emission
Impurities
substitutes
electronic structure
impurities
high resolution
Electronic states
Fermi level
spectroscopy
retarding
electronics
excitation
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Effect of Zn impurities on the electronic structure of La1.85 Sr0.15 Cu O4 studied by high-resolution angle-resolved photoemission spectroscopy. / Terashima, Kensei; Sato, Takafumi; Nakayama, Kosuke; Arakane, Toshiyuki; Takahashi, Takashi; Kofu, Maiko; Hirota, Kazuma.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 77, No. 9, 092501, 04.03.2008.

Research output: Contribution to journalArticle

Terashima, Kensei ; Sato, Takafumi ; Nakayama, Kosuke ; Arakane, Toshiyuki ; Takahashi, Takashi ; Kofu, Maiko ; Hirota, Kazuma. / Effect of Zn impurities on the electronic structure of La1.85 Sr0.15 Cu O4 studied by high-resolution angle-resolved photoemission spectroscopy. In: Physical Review B - Condensed Matter and Materials Physics. 2008 ; Vol. 77, No. 9.
@article{2779a172b5bb4802894761df2c73fb1b,
title = "Effect of Zn impurities on the electronic structure of La1.85 Sr0.15 Cu O4 studied by high-resolution angle-resolved photoemission spectroscopy",
abstract = "High-resolution angle-resolved photoemission spectroscopy has been performed on Zn-substituted La1.85 Sr0.15 Cu O4 to study the impurity effect on the electronic structure near the Fermi level. Upon Zn substitution, the kink in the band dispersion at 20 meV and the coherence peak in the off-nodal region in the superconducting state are significantly weakened and, at the same time, additional electronic states systematically evolve inside the superconducting gap. The suppression of the kink with Zn substitution shows a good correspondence to the low-energy incommensurate magnetic excitations.",
author = "Kensei Terashima and Takafumi Sato and Kosuke Nakayama and Toshiyuki Arakane and Takashi Takahashi and Maiko Kofu and Kazuma Hirota",
year = "2008",
month = "3",
day = "4",
doi = "10.1103/PhysRevB.77.092501",
language = "English",
volume = "77",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "9",

}

TY - JOUR

T1 - Effect of Zn impurities on the electronic structure of La1.85 Sr0.15 Cu O4 studied by high-resolution angle-resolved photoemission spectroscopy

AU - Terashima, Kensei

AU - Sato, Takafumi

AU - Nakayama, Kosuke

AU - Arakane, Toshiyuki

AU - Takahashi, Takashi

AU - Kofu, Maiko

AU - Hirota, Kazuma

PY - 2008/3/4

Y1 - 2008/3/4

N2 - High-resolution angle-resolved photoemission spectroscopy has been performed on Zn-substituted La1.85 Sr0.15 Cu O4 to study the impurity effect on the electronic structure near the Fermi level. Upon Zn substitution, the kink in the band dispersion at 20 meV and the coherence peak in the off-nodal region in the superconducting state are significantly weakened and, at the same time, additional electronic states systematically evolve inside the superconducting gap. The suppression of the kink with Zn substitution shows a good correspondence to the low-energy incommensurate magnetic excitations.

AB - High-resolution angle-resolved photoemission spectroscopy has been performed on Zn-substituted La1.85 Sr0.15 Cu O4 to study the impurity effect on the electronic structure near the Fermi level. Upon Zn substitution, the kink in the band dispersion at 20 meV and the coherence peak in the off-nodal region in the superconducting state are significantly weakened and, at the same time, additional electronic states systematically evolve inside the superconducting gap. The suppression of the kink with Zn substitution shows a good correspondence to the low-energy incommensurate magnetic excitations.

UR - http://www.scopus.com/inward/record.url?scp=41149101003&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41149101003&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.77.092501

DO - 10.1103/PhysRevB.77.092501

M3 - Article

AN - SCOPUS:41149101003

VL - 77

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 9

M1 - 092501

ER -