Resonant soft-x-ray emission as a bulk probe of correlated electron behavior in metallic SrxCa1-xVO3

J. Laverock; B. Chen; K. E. Smith; R. P. Singh; G. Balakrishnan; M. Gu; J. W. Lu; S. A. Wolf; R. M. Qiao; W. Yang; J. Adell

doi:10.1103/PhysRevLett.111.047402

Resonant soft-x-ray emission as a bulk probe of correlated electron behavior in metallic Sr_xCa_1-xVO₃

J. Laverock
, B. Chen
, K. E. Smith
, R. P. Singh
, G. Balakrishnan
, M. Gu
, J. W. Lu
, S. A. Wolf
, R. M. Qiao
, W. Yang
, J. Adell

Pathology

Boston University
University of Warwick
University of Virginia
Lawrence Berkeley National Laboratory
Lund University

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

16 Scopus citations

Abstract

The evolution of electron correlation in Sr_xCa _1-xVO₃ has been studied using a combination of bulk-sensitive resonant soft x-ray emission spectroscopy, surface-sensitive photoemission spectroscopy, and ab initio band structure calculations. We show that the effect of electron correlation is enhanced at the surface. Strong incoherent Hubbard subbands are found to lie ∼20% closer in energy to the coherent quasiparticle features in surface-sensitive photoemission spectroscopy measurements compared with those from bulk-sensitive resonant soft x-ray emission spectroscopy, and a ∼10% narrowing of the overall bandwidth at the surface is also observed.

Original language	English
Article number	047402
Journal	Physical Review Letters
Volume	111
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.111.047402
State	Published - Jul 24 2013

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10.1103/PhysRevLett.111.047402

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title = "Resonant soft-x-ray emission as a bulk probe of correlated electron behavior in metallic SrxCa1-xVO3",

abstract = "The evolution of electron correlation in SrxCa 1-xVO3 has been studied using a combination of bulk-sensitive resonant soft x-ray emission spectroscopy, surface-sensitive photoemission spectroscopy, and ab initio band structure calculations. We show that the effect of electron correlation is enhanced at the surface. Strong incoherent Hubbard subbands are found to lie ∼20\% closer in energy to the coherent quasiparticle features in surface-sensitive photoemission spectroscopy measurements compared with those from bulk-sensitive resonant soft x-ray emission spectroscopy, and a ∼10\% narrowing of the overall bandwidth at the surface is also observed.",

author = "J. Laverock and B. Chen and Smith, \{K. E.\} and Singh, \{R. P.\} and G. Balakrishnan and M. Gu and Lu, \{J. W.\} and Wolf, \{S. A.\} and Qiao, \{R. M.\} and W. Yang and J. Adell",

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T1 - Resonant soft-x-ray emission as a bulk probe of correlated electron behavior in metallic SrxCa1-xVO3

AU - Laverock, J.

AU - Chen, B.

AU - Smith, K. E.

AU - Singh, R. P.

AU - Balakrishnan, G.

AU - Gu, M.

AU - Lu, J. W.

AU - Wolf, S. A.

AU - Qiao, R. M.

AU - Yang, W.

AU - Adell, J.

PY - 2013/7/24

Y1 - 2013/7/24

N2 - The evolution of electron correlation in SrxCa 1-xVO3 has been studied using a combination of bulk-sensitive resonant soft x-ray emission spectroscopy, surface-sensitive photoemission spectroscopy, and ab initio band structure calculations. We show that the effect of electron correlation is enhanced at the surface. Strong incoherent Hubbard subbands are found to lie ∼20% closer in energy to the coherent quasiparticle features in surface-sensitive photoemission spectroscopy measurements compared with those from bulk-sensitive resonant soft x-ray emission spectroscopy, and a ∼10% narrowing of the overall bandwidth at the surface is also observed.

AB - The evolution of electron correlation in SrxCa 1-xVO3 has been studied using a combination of bulk-sensitive resonant soft x-ray emission spectroscopy, surface-sensitive photoemission spectroscopy, and ab initio band structure calculations. We show that the effect of electron correlation is enhanced at the surface. Strong incoherent Hubbard subbands are found to lie ∼20% closer in energy to the coherent quasiparticle features in surface-sensitive photoemission spectroscopy measurements compared with those from bulk-sensitive resonant soft x-ray emission spectroscopy, and a ∼10% narrowing of the overall bandwidth at the surface is also observed.

UR - https://www.scopus.com/pages/publications/84880905817

U2 - 10.1103/PhysRevLett.111.047402

DO - 10.1103/PhysRevLett.111.047402

M3 - Article

AN - SCOPUS:84880905817

SN - 0031-9007

VL - 111

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 047402

ER -

Resonant soft-x-ray emission as a bulk probe of correlated electron behavior in metallic Sr_xCa_1-xVO₃

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