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ID 33911
本文ファイル
著者
Hayashi, Hirokazu
Donath, M.
NDC
物理学
抄録(英)
The C2v symmetry of the W(110) surface influences strongly the spin-polarized Dirac-cone-like surface state within a spin-orbit-induced symmetry gap. We present a detailed angle-resolved photoemission study with s- and p-polarized light along three different symmetry lines. The Dirac-cone-like feature appears along ΓH̅ and ΓS̅ while it is strongly deformed along ΓN̅ . A two-fold Σ3 symmetry of the d-type surface state is identified from photoemission experiments using linearly polarized light. Our results are well described by model calculations based on an effective Hamiltonian with C2v symmetry. The flattened Dirac cone of the surface state is caused by hybridization with bulk continuum states of Σ1 and Σ2 symmetry. The spin texture of this state obtained from the model calculations shows a quasi-one-dimensional behavior. This finding opens a new avenue in the study of d-electron-based persistent spin helix systems and/or weak topological insulators.
掲載誌名
Physical Review B
86巻
16号
開始ページ
161411
出版年月日
2012
出版者
American Physical Society
ISSN
1098-0121
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
(c) 2012 American Physical Society
関連情報URL
部局名
理学研究科
放射光科学研究センター