Hydrogen-induced surface metallization of SrTiO 3(001)

M. D'Angelo; R. Yukawa; K. Ozawa; S. Yamamoto; T. Hirahara; S. Hasegawa; M. G. Silly; F. Sirotti; I. Matsuda

doi:10.1103/PhysRevLett.108.116802

Hydrogen-induced surface metallization of SrTiO ₃(001)

M. D'Angelo, R. Yukawa, K. Ozawa, S. Yamamoto, T. Hirahara, S. Hasegawa, M. G. Silly, F. Sirotti, I. Matsuda

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

Abstract

Surface metallization of SrTiO ₃(001) by hydrogen adsorption is experimentally confirmed for the first time by photoemission spectroscopy and surface conductivity measurements. The metallic state is assigned to a quantized state in the space-charge layer induced by electron doping from hydrogen atoms. The measured two-dimensional (2D) conductivity is well above the 2D Ioffe-Regel limit indicating that the system is in a metallic conduction regime. The mean free path of the surface electron is estimated to be several nanometers at room temperature.

Original language	English
Article number	116802
Journal	Physical Review Letters
Volume	108
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevLett.108.116802
Publication status	Published - 16 Mar 2012
Externally published	Yes

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10.1103/PhysRevLett.108.116802

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title = "Hydrogen-induced surface metallization of SrTiO 3(001)",

abstract = "Surface metallization of SrTiO 3(001) by hydrogen adsorption is experimentally confirmed for the first time by photoemission spectroscopy and surface conductivity measurements. The metallic state is assigned to a quantized state in the space-charge layer induced by electron doping from hydrogen atoms. The measured two-dimensional (2D) conductivity is well above the 2D Ioffe-Regel limit indicating that the system is in a metallic conduction regime. The mean free path of the surface electron is estimated to be several nanometers at room temperature.",

author = "M. D'Angelo and R. Yukawa and K. Ozawa and S. Yamamoto and T. Hirahara and S. Hasegawa and Silly, \{M. G.\} and F. Sirotti and I. Matsuda",

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AU - D'Angelo, M.

AU - Yukawa, R.

AU - Ozawa, K.

AU - Yamamoto, S.

AU - Hirahara, T.

AU - Hasegawa, S.

AU - Silly, M. G.

AU - Sirotti, F.

AU - Matsuda, I.

PY - 2012/3/16

Y1 - 2012/3/16

N2 - Surface metallization of SrTiO 3(001) by hydrogen adsorption is experimentally confirmed for the first time by photoemission spectroscopy and surface conductivity measurements. The metallic state is assigned to a quantized state in the space-charge layer induced by electron doping from hydrogen atoms. The measured two-dimensional (2D) conductivity is well above the 2D Ioffe-Regel limit indicating that the system is in a metallic conduction regime. The mean free path of the surface electron is estimated to be several nanometers at room temperature.

AB - Surface metallization of SrTiO 3(001) by hydrogen adsorption is experimentally confirmed for the first time by photoemission spectroscopy and surface conductivity measurements. The metallic state is assigned to a quantized state in the space-charge layer induced by electron doping from hydrogen atoms. The measured two-dimensional (2D) conductivity is well above the 2D Ioffe-Regel limit indicating that the system is in a metallic conduction regime. The mean free path of the surface electron is estimated to be several nanometers at room temperature.

U2 - 10.1103/PhysRevLett.108.116802

DO - 10.1103/PhysRevLett.108.116802

M3 - Article

AN - SCOPUS:84863407572

SN - 0031-9007

VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

M1 - 116802

ER -

Hydrogen-induced surface metallization of SrTiO 3(001)

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Hydrogen-induced surface metallization of SrTiO ₃(001)