Selective Probing of Hidden Spin-Polarized States in Inversion-Symmetric Bulk MoS_{2}.
نویسندگان
چکیده
Spin- and angle-resolved photoemission spectroscopy is used to reveal that a large spin polarization is observable in the bulk centrosymmetric transition metal dichalcogenide MoS_{2}. It is found that the measured spin polarization can be reversed by changing the handedness of incident circularly polarized light. Calculations based on a three-step model of photoemission show that the valley and layer-locked spin-polarized electronic states can be selectively addressed by circularly polarized light, therefore providing a novel route to probe these hidden spin-polarized states in inversion-symmetric systems as predicted by Zhang et al. [Nat. Phys. 10, 387 (2014).NPAHAX1745-247310.1038/nphys2933].
منابع مشابه
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The ARPES experiments were performed at the Advanced Resonant Spectroscopies (ADRESS) beamline at the Swiss Light Source (SLS). Data were collected using circularly-polarized light with an overall energy resolution of 50-80 meV. The samples were cleaved in situ at about 25 K and measured in a vacuum always better than 5× 10−11 mbar. The experimental geometry is described in Ref. [1]. Figure 1 (...
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ورودعنوان ژورنال:
- Physical review letters
دوره 118 8 شماره
صفحات -
تاریخ انتشار 2017