Journal Article

PUBDB-2014-03568

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Large spectral weight transfer in optical conductivity of $SrTiO_3$ induced by intrinsic vacancies

Asmara, T. C.Extern* ; Wang, X. ; Santoso, I.Extern* ; Zhang, Q.Extern* ; Shirakawa, T. ; Qi, D.Extern* ; Kotlov, A.DESY* ; Motapothula, M. ; Breese, M. H. ; Venkatesan, T. ; Yunoki, S. ; Rübhausen, M.Extern* ; Ariando ; Rusydi, A. (Corresponding author)Extern*

2014
American Institute of Physics Melville, NY

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Please use a persistent id in citations: doi:10.1063/1.4878675

Abstract: The optical conductivity (σ1) of SrTiO3 for various vacancies has been systematically studied using a combination of ultraviolet-vacuum ultraviolet reflectivity and spectroscopic ellipsometry. For cation (Ti) vacancies, σ1 shows large spectral weight transfer over a wide range of energy from as high as 35 eV to as low as 0.5 eV and the presence of mid-gap states, suggesting that strong correlations play an important role. Meanwhile, for anion (O) vacancies, σ1 shows changes from 7.4 eV up to 35 eV.

Note: OA

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Contributing Institute(s):

1. DOOR-User (DOOR)
2. FS-Experimentebetreuung DORIS (FS-DO)
3. Advanced Study Group of the University of Hamburg (UNI-ASG)
4. Ultrafast Lasers & X-rays Division (FS-CFEL-2)

Research Program(s):

1. DORIS Beamline I (POF2-54G13) (POF2-54G13)

Experiment(s):

1. DORIS Beamline I (DORIS III)

Appears in the scientific report 2014

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Database coverage:
; ; ; Allianz-Lizenz / DFG ; Current Contents - Social and Behavioral Sciences ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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