Interfacial electronic structure of SrTiO3/SrRuO3 heterojuctions studied by in situ photoemission spectroscopy

H. Kumigashira; M. Minohara; M. Takizawa; A. Fujimori; D. Toyota; I. Ohkubo; M. Oshima; M. Lippmaa; M. Kawasaki

doi:10.1063/1.2899943

Interfacial electronic structure of SrTiO₃/SrRuO₃ heterojuctions studied by in situ photoemission spectroscopy

H. Kumigashira, M. Minohara, M. Takizawa, A. Fujimori, D. Toyota, I. Ohkubo, M. Oshima, M. Lippmaa, M. Kawasaki

IMRAM - Division of Inorganic Material Research

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

8 Citations (Scopus)

Abstract

In situ photoemission spectroscopy (PES) has been performed on SrTi O3 (STO) SrRu O3 (SRO) bilayers to study the interfacial electronic structure of a SRO layer buried in STO. Using the interface (surface) sensitivity of PES measurements, the interface spectra of Ru 4d derived states near the Fermi level (EF) were extracted from the spectra of STO/SRO bilayers, as well as the surface spectra of SRO films. We found that the Ru 4d derived sharp peak at EF persists at the interface, while it smears out at the surface. These results suggest that the physical properties of SRO are maintained at the interface with STO.

Original language	English
Article number	122105
Journal	Applied Physics Letters
Volume	92
Issue number	12
DOIs	https://doi.org/10.1063/1.2899943
Publication status	Published - 2008

Access to Document

10.1063/1.2899943

Cite this

@article{76b65cdc71614645af2b6c6f86fedcdf,

title = "Interfacial electronic structure of SrTiO3/SrRuO3 heterojuctions studied by in situ photoemission spectroscopy",

abstract = "In situ photoemission spectroscopy (PES) has been performed on SrTi O3 (STO) SrRu O3 (SRO) bilayers to study the interfacial electronic structure of a SRO layer buried in STO. Using the interface (surface) sensitivity of PES measurements, the interface spectra of Ru 4d derived states near the Fermi level (EF) were extracted from the spectra of STO/SRO bilayers, as well as the surface spectra of SRO films. We found that the Ru 4d derived sharp peak at EF persists at the interface, while it smears out at the surface. These results suggest that the physical properties of SRO are maintained at the interface with STO.",

author = "H. Kumigashira and M. Minohara and M. Takizawa and A. Fujimori and D. Toyota and I. Ohkubo and M. Oshima and M. Lippmaa and M. Kawasaki",

year = "2008",

doi = "10.1063/1.2899943",

language = "English",

volume = "92",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "12",

}

TY - JOUR

T1 - Interfacial electronic structure of SrTiO3/SrRuO3 heterojuctions studied by in situ photoemission spectroscopy

AU - Kumigashira, H.

AU - Minohara, M.

AU - Takizawa, M.

AU - Fujimori, A.

AU - Toyota, D.

AU - Ohkubo, I.

AU - Oshima, M.

AU - Lippmaa, M.

AU - Kawasaki, M.

PY - 2008

Y1 - 2008

N2 - In situ photoemission spectroscopy (PES) has been performed on SrTi O3 (STO) SrRu O3 (SRO) bilayers to study the interfacial electronic structure of a SRO layer buried in STO. Using the interface (surface) sensitivity of PES measurements, the interface spectra of Ru 4d derived states near the Fermi level (EF) were extracted from the spectra of STO/SRO bilayers, as well as the surface spectra of SRO films. We found that the Ru 4d derived sharp peak at EF persists at the interface, while it smears out at the surface. These results suggest that the physical properties of SRO are maintained at the interface with STO.

AB - In situ photoemission spectroscopy (PES) has been performed on SrTi O3 (STO) SrRu O3 (SRO) bilayers to study the interfacial electronic structure of a SRO layer buried in STO. Using the interface (surface) sensitivity of PES measurements, the interface spectra of Ru 4d derived states near the Fermi level (EF) were extracted from the spectra of STO/SRO bilayers, as well as the surface spectra of SRO films. We found that the Ru 4d derived sharp peak at EF persists at the interface, while it smears out at the surface. These results suggest that the physical properties of SRO are maintained at the interface with STO.

UR - http://www.scopus.com/inward/record.url?scp=41349100906&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=41349100906&partnerID=8YFLogxK

U2 - 10.1063/1.2899943

DO - 10.1063/1.2899943

M3 - Article

AN - SCOPUS:41349100906

SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 12

M1 - 122105

ER -

Interfacial electronic structure of SrTiO₃/SrRuO₃ heterojuctions studied by in situ photoemission spectroscopy

Abstract

Access to Document

Other files and links

Fingerprint

Cite this