Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.156801
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Funding
- JSPS [20244045, 20340092]
- MEXT [G-03]
- Grants-in-Aid for Scientific Research [20244045, 20340092] Funding Source: KAKEN
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A peculiar Rashba effect is found at a point in the Brillouin zone, where the time-reversal symmetry is broken, though this symmetry was believed to be a necessary condition for Rashba splitting. This finding obtained experimentally by photoemission measurements on a Bi/Si(111)-(root 3 x root 3) surface is fully confirmed by a first-principles theoretical calculation. We found that the peculiar Rashba effect is simply understood by the two-dimensional symmetry of the surface, and that this effect leads to an unconventional nonvortical Rashba spin structure at a point with time-reversal invariance.
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