Tunable spin gaps in a quantum-confined geometry.
Phys Rev Lett
; 101(19): 196805, 2008 Nov 07.
Article
en En
| MEDLINE
| ID: mdl-19113296
ABSTRACT
We have studied the interplay of a giant spin-orbit splitting and of quantum confinement in artificial Bi-Ag-Si trilayer structures. Angle-resolved photoelectron spectroscopy reveals the formation of a complex spin-dependent gap structure, which can be tuned by varying the thickness of the Ag buffer layer. This provides a means to tailor the electronic structure at the Fermi energy, with potential applications for silicon-compatible spintronic devices.
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Phys Rev Lett
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2008
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Article