Orbital magnetic moment and extrinsic spin Hall effect for iron impurities in gold

0367154 - FZÚ 2012 RIV US eng J - Článek v odborném periodiku
Shick, Alexander - Kolorenč, Jindřich - Janiš, Václav - Lichtenstein, A.I.
Orbital magnetic moment and extrinsic spin Hall effect for iron impurities in gold.
Physical Review. B. Roč. 84, č. 11 (2011), "113112-1"-"113112-4". ISSN 1098-0121
Grant CEP: GA ČR(CZ) GAP204/10/0330; GA AV ČR IAA100100912
Výzkumný záměr: CEZ:AV0Z10100520
Klíčová slova: spin Hall effect * XMCD
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.691, rok: 2011
http://prb.aps.org/abstract/PRB/v84/i11/e113112

We report electronic structure calculations of an iron impurity in a gold host. The spin, orbital, and dipole magnetic moments were investigated using the LDA+U correlated band theory. We show that the around-mean-field LDA+U reproduces the x-ray magnetic circular dichroism experiments well and does not lead to the formation of a large orbital moment on the Fe atom. Furthermore, exact diagonalization of the multiorbital Anderson impurity model with the full Coulomb interaction matrix and the spin-orbit coupling is performed in order to estimate the spin Hall angle. The calculations suggest that there is no giant extrinsic spin Hall effect due to scattering on iron impurities in gold.
Trvalý link: http://hdl.handle.net/11104/0201921