Spin-polarized confined states in Ag films on Fe(110)
[1];
[2];
- Istituto di Struttura della Materia, Trieste (Italy)
- Peter Grunberg Institut and Institute for Advanced Simulation, Julich (Germany)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Univ. della Calabria, Arcavacata di Rende (CS) (Italy)
- Istituto di Struttura della Materia, Roma (Italy)
Spin- and angle-resolved photoemission spectroscopy of thin Ag(111) films on ferromagnetic Fe(110) shows a series of spin-polarized peaks. These features derive from Ag sp-bands, which form quantum well states and resonances due to confinement by a spin-dependent interface potential barrier. The spin-up states are broader and located at higher binding energy than the corresponding spin-down states at Gamma, although the differences attenuate near the Fermi level. The spin-down states display multiple gap openings, which interrupt their parabolic-like dispersion. As a result, first-principles calculations attribute these findings to the symmetry- and spin-selective hybridization of the Ag states with the exchange-split bands of the substrate.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1433964
- Report Number(s):
- BNL-203487-2018-JAAM; TRN: US1802812
- Journal Information:
- Journal of Physics. Condensed Matter, Vol. 29, Issue 49; ISSN 0953-8984
- Publisher:
- IOP PublishingCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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