Magnetic interactions in 3d metal chains on Cu2X/Cu(001) (X= N, O): Comparison with corresponding unsupported chains
| Autor: | Urdaniz, Maria Corina, Barral, María Andrea, Llois, Ana Maria, Saúl, A. |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| DOI: | 10.1103/PhysRevB.90.195423 |
| Popis: | In this work we present a systematic study of the magnetic interactions within 3d transition-metal chains adsorbed on Cu2N and Cu2O monolayers grown on Cu(001). We are interested in the particular geometric adsorption configuration which gives rise, after relaxation, to the development of diatomic TM-X(X=N,O) chains. By using density functional theory (DFT), we calculate the energy difference between the ferromagnetic and antiferromagnetic intrachain configurations for Ti, V, Cr, Mn, Fe, and Co. Both substrates give rise, with minor differences, to the same magnetic trends, the only chains which are ferromagnetic after adsorption are Cr chains. By performing similar calculations in unsupported chains and introducing a tight-binding-model Hamiltonian based on physically reasonable assumptions we reproduce the magnetic trends obtained from the DFT calculations. Fil: Urdaniz, Maria Corina. Comisión Nacional de Energía Atómica; Argentina Fil: Barral, María Andrea. Comisión Nacional de Energía Atómica; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Llois, Ana Maria. Comisión Nacional de Energía Atómica; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Saúl, A.. Universite d’Aix Marseille; Francia. Massachusetts Institute of Technology; Estados Unidos. MultiScale Material Science for Energy and Environment. Cambridge; Estados Unidos |
| Databáze: | OpenAIRE |
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