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000283779 041__ $$aEnglish
000283779 1001_ $$0P:(DE-HGF)0$$aPopescu, V.$$b0
000283779 1112_ $$aNIC Symposium 2016$$cJülich$$d2016-02-11 - 2016-02-12$$wGermany
000283779 245__ $$aAnisotropic Magneto-Thermopower in M/Co/M (M = Cu; Pd; Pt) Trilayer Systems
000283779 260__ $$aJülich$$bForschungszentrum Jülich GmbH, Zentralbibliothek$$c2016
000283779 29510 $$aNIC Symposium 2016
000283779 300__ $$a217-224
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000283779 4900_ $$aNIC Series$$v48
000283779 520__ $$aAb initio investigations performed within the framework of the spin-polarised relativistic Korringa-Kohn-Rostoker Green’s function method show that the longitudinal thermopower in the metallic M/Co/M systems (with M a non-magnetic transition metal) depends in a significant manner on the relative orientation (in-plane versus out-of-plane) of the sample magnetisation. As thermoelectric analogue of the conventional anisotropic magneto-resistance (AMR), the amplitude of this magneto-thermopower (MTP) signal is related to the asymmetry of the AMR around the Fermi energy. This asymmetry can be sizable, and thus the MTP accordingly large, even if the AMR itself is small. An enhancement of the MTP based on this understanding opens the possibility of implementing efficient spin read-out thermoelectric devices based on a single ferromagnetic layer. Our calculations reveal a rather non-intuitive behaviour of the MTP in the investigated systems, with the Pd/Co/Pd trilayer exhibiting an extremely small valued MTP, not necessarily expected from the monotonous increase of the spin-orbit coupling strength for the different heterostructure partners M = Cu; Pd; Pt.
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000283779 7001_ $$0P:(DE-HGF)0$$aKratzer, P.$$b1
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