Thermal properties of a spin spiral: Manganese on tungsten(110)

Hasselberg, Georg; Yanes, Rocío; Hinzke, Denise; Sessi, Paolo; Bode, Matthias; Szunyogh, L.; Nowak, Ulrich

doi:10.1103/physrevb.91.064402

Cited by 17 publications

(15 citation statements)

References 40 publications

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“…, the energy density becomes negative and hence the DWs proliferate in the system resulting in a spin spiral state, which has been studied before. 32,47,48 In our simulations, we always stay far below this critical point.…”

Section: A Static Properties Of the Dwmentioning

confidence: 90%

Domain walls in antiferromagnets: The effect of Dzyaloshinskii–Moriya interactions

Conzelmann

Selzer

Nowak

2020

Journal of Applied Physics

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Section: A Static Properties Of the Dwmentioning

confidence: 90%

Domain walls in antiferromagnets: The effect of Dzyaloshinskii–Moriya interactions

Conzelmann

Selzer

Nowak

2020

Journal of Applied Physics

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“…II C, the shape of the spiral state will differ from a perfect sinusoidal shape due to the anisotropy in the system. Therefore the order parameter for wave vector q does not perfectly fit this anharmonic spiral with the same wave vector due to the appearance of higher Fourier harmonics, but still it gives a good approximation to characterize the ordering [49].…”

Section: Phase Transitions At Finite Temperature Using Monte Carlomentioning

confidence: 96%

Magnetic phase diagram of an Fe monolayer on W(110) and Ta(110) surfaces based onab initiocalculations

et al. 2015

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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 the case of the 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.

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“…15 This result is consistent with experiments examining the temperature dependence of the wavelength of spin spirals in Mn on W(110). 16 Barker and Tretiakov concluded a strongly temperature-dependent DMI based on a study of antiferromagnetic skyrmions, 17 but a detailed analysis of the related micromagnetic parameters was lacking.…”

mentioning

confidence: 99%

Temperature dependence of the Dzyaloshinskii-Moriya interaction in Pt/Co/Cu thin film heterostructures

Schlotter

Agrawal

Beach

2018

Applied Physics Letters

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Magnetic materials that exhibit chiral domain walls are of great interest for spintronic devices. In this work, we examine the temperature-dependent behavior of the Dzyaloshinskii-Moriya interaction (DMI) in Pt/Co/Cu thin film heterostructures. We extract the DMI strength, D, from static domain spacing analysis between 300 K and 500 K and compare its temperature dependence to that of the magnetic anisotropy, K u , and saturation magnetization, M s. Consistent with expected scaling in thin films, M s exhibits Bloch-law temperature scaling and K u scales as M s 2:160:1. However, D varies more strongly with temperature than expected, scaling as D / M s 4:960:7 , indicating that interfacial DMI is more sensitive to thermal fluctuations than bulk magnetic properties. We suggest that this may be related to the temperature dependence of locally induced magnetic moments in the Pt underlayer and the 3d-5d orbital interactions at the interface. While we observe stable domain widths in the studied temperature range, a strongly temperature dependent DMI may have significant consequences for potential devices based on the chiral domain wall or skyrmion motion.

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Thermal properties of a spin spiral: Manganese on tungsten(110)

Cited by 17 publications

References 40 publications

Domain walls in antiferromagnets: The effect of Dzyaloshinskii–Moriya interactions

Domain walls in antiferromagnets: The effect of Dzyaloshinskii–Moriya interactions

Magnetic phase diagram of an Fe monolayer on W(110) and Ta(110) surfaces based onab initiocalculations

Temperature dependence of the Dzyaloshinskii-Moriya interaction in Pt/Co/Cu thin film heterostructures

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