A study of the electronic structure of FeSe1-xTex chalcogenides by Fe and Se K-edge x-ray absorption near edge structure measurements

B. Joseph, A. Iadecola, L. Simonelli, Y. Mizuguchi, Y. Takano, Takashi Mizokawa, N. L. Saini

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Fe K-edge and Se K-edge x-ray absorption near edge structure (XANES) measurements are used to study the FeSe1-xTex electronic structure of chalcogenides. An intense Fe K-edge pre-edge peak due to Fe 1s →3d (and admixed Se/Te p states) is observed, showing substantial change with Te substitution and x-ray polarization. The main white line peak in the Se K-edge XANES due to Se 1s→ 4p transition appears similar to the one expected for Se2- systems and changes with Te substitution. Polarization dependence reveals that unoccupied Se orbitals near the Fermi level have predominant px,y character. The results provide key information on the hybridization of Fe 3d and chalcogen p states in the Fe-based chalcogenide superconductors.

Original languageEnglish
Article number485702
JournalJournal of Physics Condensed Matter
Volume22
Issue number48
DOIs
Publication statusPublished - 2010 Dec 8
Externally publishedYes

Fingerprint

Chalcogenides
chalcogenides
x ray absorption
Electronic structure
electronic structure
X rays
Chalcogens
Substitution reactions
Polarization
Fermi level
substitutes
polarization
orbitals

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

Cite this

A study of the electronic structure of FeSe1-xTex chalcogenides by Fe and Se K-edge x-ray absorption near edge structure measurements. / Joseph, B.; Iadecola, A.; Simonelli, L.; Mizuguchi, Y.; Takano, Y.; Mizokawa, Takashi; Saini, N. L.

In: Journal of Physics Condensed Matter, Vol. 22, No. 48, 485702, 08.12.2010.

Research output: Contribution to journalArticle

@article{1f6bd256ef0241df91913a8daa983538,
title = "A study of the electronic structure of FeSe1-xTex chalcogenides by Fe and Se K-edge x-ray absorption near edge structure measurements",
abstract = "Fe K-edge and Se K-edge x-ray absorption near edge structure (XANES) measurements are used to study the FeSe1-xTex electronic structure of chalcogenides. An intense Fe K-edge pre-edge peak due to Fe 1s →3d (and admixed Se/Te p states) is observed, showing substantial change with Te substitution and x-ray polarization. The main white line peak in the Se K-edge XANES due to Se 1s→ 4p transition appears similar to the one expected for Se2- systems and changes with Te substitution. Polarization dependence reveals that unoccupied Se orbitals near the Fermi level have predominant px,y character. The results provide key information on the hybridization of Fe 3d and chalcogen p states in the Fe-based chalcogenide superconductors.",
author = "B. Joseph and A. Iadecola and L. Simonelli and Y. Mizuguchi and Y. Takano and Takashi Mizokawa and Saini, {N. L.}",
year = "2010",
month = "12",
day = "8",
doi = "10.1088/0953-8984/22/48/485702",
language = "English",
volume = "22",
journal = "Journal of Physics Condensed Matter",
issn = "0953-8984",
publisher = "IOP Publishing Ltd.",
number = "48",

}

TY - JOUR

T1 - A study of the electronic structure of FeSe1-xTex chalcogenides by Fe and Se K-edge x-ray absorption near edge structure measurements

AU - Joseph, B.

AU - Iadecola, A.

AU - Simonelli, L.

AU - Mizuguchi, Y.

AU - Takano, Y.

AU - Mizokawa, Takashi

AU - Saini, N. L.

PY - 2010/12/8

Y1 - 2010/12/8

N2 - Fe K-edge and Se K-edge x-ray absorption near edge structure (XANES) measurements are used to study the FeSe1-xTex electronic structure of chalcogenides. An intense Fe K-edge pre-edge peak due to Fe 1s →3d (and admixed Se/Te p states) is observed, showing substantial change with Te substitution and x-ray polarization. The main white line peak in the Se K-edge XANES due to Se 1s→ 4p transition appears similar to the one expected for Se2- systems and changes with Te substitution. Polarization dependence reveals that unoccupied Se orbitals near the Fermi level have predominant px,y character. The results provide key information on the hybridization of Fe 3d and chalcogen p states in the Fe-based chalcogenide superconductors.

AB - Fe K-edge and Se K-edge x-ray absorption near edge structure (XANES) measurements are used to study the FeSe1-xTex electronic structure of chalcogenides. An intense Fe K-edge pre-edge peak due to Fe 1s →3d (and admixed Se/Te p states) is observed, showing substantial change with Te substitution and x-ray polarization. The main white line peak in the Se K-edge XANES due to Se 1s→ 4p transition appears similar to the one expected for Se2- systems and changes with Te substitution. Polarization dependence reveals that unoccupied Se orbitals near the Fermi level have predominant px,y character. The results provide key information on the hybridization of Fe 3d and chalcogen p states in the Fe-based chalcogenide superconductors.

UR - http://www.scopus.com/inward/record.url?scp=78649828735&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78649828735&partnerID=8YFLogxK

U2 - 10.1088/0953-8984/22/48/485702

DO - 10.1088/0953-8984/22/48/485702

M3 - Article

VL - 22

JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

SN - 0953-8984

IS - 48

M1 - 485702

ER -