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Magnetic Phase Control in Monolayer Films by Substrate Tuning | | P. Ferriani
; I. Turek
; S. Heinze
; G. Bihlmayer
; S. Blügel
; | | Date: |
11 Jan 2007 | | Subject: | Materials Science | | Abstract: | We propose to tailor exchange interactions in magnetic monolayer films by tuning the adjacent non-magnetic substrate. As an example, we demonstrate a ferromagnetic-antiferromagnetic phase transition for one monolayer Fe on a Ta(x)W(1-x)(001) surface as a function of the Ta concentration. At the critical Ta concentration, the nearest-neighbour exchange interaction is small and exchange terms beyond nearest-neighbours or higher order spin interactions beyond the Heisenberg Hamiltonian become crucial. In this regime, the magnetic phase space is dramatically broadened and complex magnetic order such as spin-spirals, multiple-Q, or even disordered local moment states can occur. | | Source: | arXiv, cond-mat/0701241 | | Services: | Forum | Review | PDF | Favorites | |
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