Anisotropic electronic band structure of intrinsic Si(110) studied by angle-resolved photoemission spectroscopy and first-principles calculations

Stephane Yu Matsushita, Akari Takayama, Erina Kawamoto, Chunping Hu, Satoshi Hagiwara, Kazuyuki Watanabe, Takashi Takahashi, Shozo Suto

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have studied the electronic band structure of the hydrogen-terminated Si(110)-(1×1) [H:Si(110)-(1×1)] surface using angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations in the framework of density functional theory with local density approximation (LDA). The bulk-truncated H:Si(110)-(1×1) surface is a good template to investigate the electronic band structure of the intrinsic Si(110). In the ARPES spectra, seven bulk states and one surface state due to the H-H interaction are observed clearly. The four bulk states consisting of Si 3pxy orbitals exhibit anisotropic band dispersions along the high symmetric direction of Γ-X and Γ-X′ directions, where one state shows one-dimensional character. The calculated band structures show a good agreement with the experimental results except the surface state. We discuss the exact nature of electronic band structures and the applicability of LDA. We have estimated the anisotropic effective masses of electrons and holes of Si(110) for device application.

Original languageEnglish
Article number125302
JournalPhysical Review B
Volume96
Issue number12
DOIs
Publication statusPublished - 2017 Sep 14
Externally publishedYes

Fingerprint

Photoelectron spectroscopy
Band structure
photoelectric emission
Local density approximation
Surface states
electronics
spectroscopy
Hydrogen
Dispersions
Density functional theory
approximation
templates
Electrons
density functional theory
orbitals
hydrogen
electrons
Direction compound
interactions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Anisotropic electronic band structure of intrinsic Si(110) studied by angle-resolved photoemission spectroscopy and first-principles calculations. / Matsushita, Stephane Yu; Takayama, Akari; Kawamoto, Erina; Hu, Chunping; Hagiwara, Satoshi; Watanabe, Kazuyuki; Takahashi, Takashi; Suto, Shozo.

In: Physical Review B, Vol. 96, No. 12, 125302, 14.09.2017.

Research output: Contribution to journalArticle

Matsushita, Stephane Yu ; Takayama, Akari ; Kawamoto, Erina ; Hu, Chunping ; Hagiwara, Satoshi ; Watanabe, Kazuyuki ; Takahashi, Takashi ; Suto, Shozo. / Anisotropic electronic band structure of intrinsic Si(110) studied by angle-resolved photoemission spectroscopy and first-principles calculations. In: Physical Review B. 2017 ; Vol. 96, No. 12.
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