Anisotropic spin gaps in BiAg$_2$-Ag/Si(111)

Autor:	Crepaldi, Alberto, Pons, Stephane, Frantzeskakis, Emmanouil, Kern, Klaus, Grioni, Marco
Rok vydání:	2011
Předmět:	Condensed Matter - Materials Science Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.85.075411
Popis:	We present a detailed analysis of the band structure of the BiAg$_2$/Ag/Si(111) trilayer system by means of high resolution Angle Resolved Photoemission Spectroscopy (ARPES). BiAg2/Ag/Si(111) exhibits a complex spin polarized electronic structure due to giant spin-orbit interactions. We show that a complete set of constant energy ARPES maps, supplemented by a modified nearly free electron calculation, provides a unique insight into the structure of the spin polarized bands and spin gaps. We also show that the complex gap structure can be continuously tuned in energy by a controlled deposition of an alkali metal. Comment: 6 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1112.3275 Zobrazit plný text záznamu View this record from Arxiv