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RESEARCH PRODUCT
Spin texture of time-reversal symmetry invariant surface states on W(110)
R. WallauerHubert EbertGerd SchönhenseMartin EllguthMartin EllguthS. ChernovSergej A. NepijkoStephan BorekJan MinárJan MinárJürgen BraunHans-joachim ElmersKaterina MedjanikD. KutnyakhovChristian TuscheM. Krivenkovsubject
PhysicsMultidisciplinaryCondensed matter physicsTexture (cosmology)Dirac (software)Right angleLarge scale facilities for research with photons neutrons and ions02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesArticleMomentumT-symmetryTopological insulator0103 physical sciencesCondensed Matter::Strongly Correlated Electrons010306 general physics0210 nano-technologySpin-½Surface statesdescription
AbstractWe find in the case of W(110) previously overlooked anomalous surface states having their spin locked at right angle to their momentum using spin-resolved momentum microscopy. In addition to the well known Dirac-like surface state with Rashba spin texture near the "Equation missing"-point, we observe a tilted Dirac cone with circularly shaped cross section and a Dirac crossing at 0.28 × "Equation missing" "Equation missing" within the projected bulk band gap of tungsten. This state has eye-catching similarities to the spin-locked surface state of a topological insulator. The experiments are fortified by a one-step photoemission calculation in its density-matrix formulation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-07-12 | Scientific Reports |