Intrinsic and extrinsic surface states of single crystalline SrTiO3

Yuji Adachi; Shigemi Kohiki; Kazuaki Wagatsuma; Masaoki Oku

doi:10.1063/1.368273

Intrinsic and extrinsic surface states of single crystalline SrTiO₃

Yuji Adachi, Shigemi Kohiki, Kazuaki Wagatsuma, Masaoki Oku

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

20 Citations (Scopus)

Abstract

We have no evidence of intrinsic surface states in the band gap for in situ fractured SrTiO₃:La, SrTiO₃:Nb and SrTiO₃. The valence band maximum of the samples lie at 3.3 eV below the Fermi level, indicating that the band bending is negligibly small. No emission from the region of bulk band gap indicated that the intrinsic surface states are largely empty. Ar⁺ ion bombardment of in situ fractured samples gave rise to a peak at around 11.6 eV, indicating the Ti⁺³ state.

Original language	English
Pages (from-to)	2123-2126
Number of pages	4
Journal	Journal of Applied Physics
Volume	84
Issue number	4
DOIs	https://doi.org/10.1063/1.368273
Publication status	Published - 1998 Aug 15
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.368273

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abstract = "We have no evidence of intrinsic surface states in the band gap for in situ fractured SrTiO3:La, SrTiO3:Nb and SrTiO3. The valence band maximum of the samples lie at 3.3 eV below the Fermi level, indicating that the band bending is negligibly small. No emission from the region of bulk band gap indicated that the intrinsic surface states are largely empty. Ar+ ion bombardment of in situ fractured samples gave rise to a peak at around 11.6 eV, indicating the Ti+3 state.",

author = "Yuji Adachi and Shigemi Kohiki and Kazuaki Wagatsuma and Masaoki Oku",

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AU - Adachi, Yuji

AU - Kohiki, Shigemi

AU - Wagatsuma, Kazuaki

AU - Oku, Masaoki

PY - 1998/8/15

Y1 - 1998/8/15

N2 - We have no evidence of intrinsic surface states in the band gap for in situ fractured SrTiO3:La, SrTiO3:Nb and SrTiO3. The valence band maximum of the samples lie at 3.3 eV below the Fermi level, indicating that the band bending is negligibly small. No emission from the region of bulk band gap indicated that the intrinsic surface states are largely empty. Ar+ ion bombardment of in situ fractured samples gave rise to a peak at around 11.6 eV, indicating the Ti+3 state.

AB - We have no evidence of intrinsic surface states in the band gap for in situ fractured SrTiO3:La, SrTiO3:Nb and SrTiO3. The valence band maximum of the samples lie at 3.3 eV below the Fermi level, indicating that the band bending is negligibly small. No emission from the region of bulk band gap indicated that the intrinsic surface states are largely empty. Ar+ ion bombardment of in situ fractured samples gave rise to a peak at around 11.6 eV, indicating the Ti+3 state.

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Intrinsic and extrinsic surface states of single crystalline SrTiO₃

Abstract

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