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; Johan Adell

doi:10.1103/PhysRevLett.111.047402

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, Johan Adell

MAX IV Laboratory

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

Abstract

The evolution of electron correlation in SrxCa1-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 similar to 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 similar to 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
Publication status	Published - 2013

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Physical Sciences
Natural Sciences

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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 SrxCa1-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 similar to 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 similar to 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 Johan Adell",

year = "2013",

doi = "10.1103/PhysRevLett.111.047402",

language = "English",

volume = "111",

journal = "Physical Review Letters",

issn = "1079-7114",

publisher = "American Physical Society",

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TY - JOUR

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, Johan

PY - 2013

Y1 - 2013

N2 - The evolution of electron correlation in SrxCa1-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 similar to 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 similar to 10% narrowing of the overall bandwidth at the surface is also observed.

AB - The evolution of electron correlation in SrxCa1-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 similar to 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 similar to 10% narrowing of the overall bandwidth at the surface is also observed.

U2 - 10.1103/PhysRevLett.111.047402

DO - 10.1103/PhysRevLett.111.047402

M3 - Article

SN - 1079-7114

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 SrxCa1-xVO3

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