Marie Hervé, Timofey Balashov, Arthur Ernst, Wulf Wulfhekel,
"Large tunneling anisotropic magnetoresistance mediated by surface states"
, in American Physical Society, in Physical Review B, Vol. 97, Nummer 22, Seite(n) 220406(R), 6-2018
Original Titel:
Large tunneling anisotropic magnetoresistance mediated by surface states
Sprache des Titels:
Englisch
Original Kurzfassung:
We investigate the tunneling anisotropic magnetoresistance (TAMR) in thick hcp Co films at cryogenic
temperatures using scanning tunnelingmicroscopy. At around?350 mV, a strong TAMRup to 30% is found with
a characteristic voltage dependence and a reversal of sign.With the help of ab initio calculations, the TAMR can
be traced back to a spin-polarized occupied surface state that experiences a strong spin-orbit interaction leading
to a magnetization direction depending on hybridization with bulk states.
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