TY - JOUR
T1 - Giant out-of-plane spin component and the asymmetry of spin polarization in surface rashba states of bismuth thin film
AU - Takayama, A.
AU - Sato, T.
AU - Souma, S.
AU - Takahashi, T.
PY - 2011/4/19
Y1 - 2011/4/19
N2 - We have performed high-resolution spin- and angle-resolved photoemission spectroscopy of bismuth thin film on Si(111) to investigate the spin structure of surface states. Unlike the conventional Rashba splitting, the magnitude of the in-plane spin polarization is asymmetric between the two elongated surface hole pockets across the zone center. Moreover, we uncovered a giant out-of-plane spin polarization as large as the in-plane counterpart which switches the sign across the Γ̄-M̄ line. We discuss the present finding in terms of the symmetry breaking and the many-body effects.
AB - We have performed high-resolution spin- and angle-resolved photoemission spectroscopy of bismuth thin film on Si(111) to investigate the spin structure of surface states. Unlike the conventional Rashba splitting, the magnitude of the in-plane spin polarization is asymmetric between the two elongated surface hole pockets across the zone center. Moreover, we uncovered a giant out-of-plane spin polarization as large as the in-plane counterpart which switches the sign across the Γ̄-M̄ line. We discuss the present finding in terms of the symmetry breaking and the many-body effects.
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U2 - 10.1103/PhysRevLett.106.166401
DO - 10.1103/PhysRevLett.106.166401
M3 - Article
AN - SCOPUS:79960635670
SN - 0031-9007
VL - 106
JO - Physical Review Letters
JF - Physical Review Letters
IS - 16
M1 - 166401
ER -