Magnetic phase diagram of an Fe monolayer on W(110) and Ta(110) surfaces based on ab initio calculations

Abstract

We present detailed investigations of the magnetic properties of an Fe monolayer on W and Ta (110) surfaces based on the ab initio screened Korringa-Kohn-Rostoker method. By calculating tensorial exchange coupling coefficients, the ground states of the systems are determined using atomistic spin dynamics simulations. Different types of ground states are found in the systems as a function of relaxation of the Fe layer. In case of W(110) substrate this is reflected in a reorientation of the easy axis from in-plane to out-of-plane. For Ta(110) a switching appears from the ferromagnetic state to a cycloidal spin spiral state, then to another spin spiral state with a larger wave vector and, for large relaxations, a rotation of the normal vector of the spin spiral is found. Classical Monte Carlo simulations indicate temperature-induced transitions between the different magnetic phases observed in the Fe/Ta(110) system. These phase transitions are analyzed both quantitatively and qualitatively by finite-temperature spin wave theory.

arXiv comment18 pages, 11 figures

References in corpus (8)

• Asymmetric Spin-wave Dispersion on Fe(110): Direct Evidence of Dzyaloshinskii--Moriya Interaction
• Chiral asymmetry of the spin-wave spectra in ultrathin magnetic films
• First principles calculation of structural and magnetic properties for Fe monolayers and bilayers on W(110)
• Atomistic spin dynamics of low-dimensional magnets
• First-principles analysis of a homo-chiral cycloidal magnetic structure in a monolayer Cr on W(110)
• Magnon softening in a ferromagnetic monolayer: a first-principles spin dynamics study
• Magnetic Phase Control in Monolayer Films by Substrate Tuning
• Spin-correlations and magnetic structure in an Fe monolayer on 5d transition metal surfaces

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