作者
D Kutnyakhov, S Chernov, K Medjanik, R Wallauer, C Tusche, M Ellguth, SA Nepijko, M Krivenkov, J Braun, S Borek, J Minár, H Ebert, HJ Elmers, G Schönhense
发表日期
2016/7/12
期刊
Scientific reports
卷号
6
期号
1
页码范围
29394
出版商
Nature Publishing Group UK
简介
We 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-point, we observe a tilted Dirac cone with circularly shaped cross section and a Dirac crossing at 0.28× 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.
引用总数
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