Role of the spin-orbit splitting and the dynamical fluctuations in the Si(557)-Au surface

Details Role of the spin-orbit splitting and the dynamical fluctuations in the Si(557)-Au surface Role of the spin-orbit splitting and the dynamical fluctuations in the Si(557)-Au surface

2005-10-10

arxiv.org/abs/cond-mat/0510239v1

Physical Review Letters 93, 146803 (2004)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevLett.93.146803

Our it ab initio calculations show that spin-orbit coupling is crucial to understand the electronic structure of the Si(557)-Au surface. The spin-orbit splitting produces the two one-dimensional bands observed in photoemission, which were previously attributed to spin-charge separation in a Luttinger liquid. This spin splitting might have relevance for future device applications. We also show that the apparent Peierls-like transition observed in this surface by scanning tunneling microscopy is a result of the dynamical fluctuations of the step-edge structure, which are quenched as the temperature is decreased.

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