The Rashba-split surface state of Sb2Te3(0001) and its interaction with bulk states

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F15%3A43927519" target="_blank" >RIV/49777513:23640/15:43927519 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.elspec.2014.12.003" target="_blank" >http://dx.doi.org/10.1016/j.elspec.2014.12.003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.elspec.2014.12.003" target="_blank" >10.1016/j.elspec.2014.12.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Rashba-split surface state of Sb2Te3(0001) and its interaction with bulk states

Popis výsledku v původním jazyce

The electronic structure of the Sb2Te3(0 0 0 1) surface exhibits a spin-orbit split surface state in a local energy gap of the projected bulk valence band continuum. We investigate this surface state by high-resolution angle-resolved photoemission spectroscopy (ARPES), spin-resolved ARPES and relativistic one-step photoemission calculations. At low wave vectors the dispersion and spin splitting are well-captured by the predictions of the Rashba model for a two-dimensional electron system. With increasing wave vectors, however, the surface state dispersion becomes more complex and the spin splitting size exhibits an unusual non-monotonic evolution. These deviations from the Rashba model arise from the influence of bulk continuum states near the edge ofthe projected gap. The spin polarization of the surface state remains intact despite the coupling to bulk states. (C) 2014 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

The Rashba-split surface state of Sb2Te3(0001) and its interaction with bulk states

Popis výsledku anglicky

The electronic structure of the Sb2Te3(0 0 0 1) surface exhibits a spin-orbit split surface state in a local energy gap of the projected bulk valence band continuum. We investigate this surface state by high-resolution angle-resolved photoemission spectroscopy (ARPES), spin-resolved ARPES and relativistic one-step photoemission calculations. At low wave vectors the dispersion and spin splitting are well-captured by the predictions of the Rashba model for a two-dimensional electron system. With increasing wave vectors, however, the surface state dispersion becomes more complex and the spin splitting size exhibits an unusual non-monotonic evolution. These deviations from the Rashba model arise from the influence of bulk continuum states near the edge ofthe projected gap. The spin polarization of the surface state remains intact despite the coupling to bulk states. (C) 2014 Elsevier B.V. All rights reserved.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BE - Teoretická fyzika

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0088" target="_blank" >ED2.1.00/03.0088: Centrum nových technologií a materiálů (CENTEM)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of electron spectroscopy and related phenomena

ISSN

0368-2048

e-ISSN

—

Svazek periodika

201

Číslo periodika v rámci svazku

květen 2015

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

110-114

Kód UT WoS článku

000357909500020

EID výsledku v databázi Scopus

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