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

G. Hasselberg | Zendy; R. Yanes | Zendy; D. Hinzke | Zendy; Paolo Sessi | Zendy; M. Bode | Zendy; L. Szunyogh | Zendy; U. Nowak | Zendy

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

Author(s) -

G. Hasselberg,

R. Yanes,

D. Hinzke,

Paolo Sessi,

M. Bode,

L. Szunyogh,

U. Nowak

Publication year - 2015

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.91.064402

Subject(s) - superparamagnetism , condensed matter physics , antiferromagnetism , materials science , spiral (railway) , ground state , tungsten , spin (aerodynamics) , thermal , magnetic structure , micromagnetics , monatomic gas , manganese , magnetization , physics , magnetic field , thermodynamics , atomic physics , mathematical analysis , mathematics , quantum mechanics , metallurgy

(Received 24 July 2014; revised manuscript received 16 December 2014; published 2 February 2015)We report a detailed study of the magnetic properties of a monoatomic layer of Mn on W(110). Bycomparing multiscale numerical calculations with measurements we evaluate the magnetic ground state ofthe system and its temperature-dependent evolution. We nd that the ground state consists of a cycloidalspin spiral (CSS) that persists up to the Neel temperature with a temperature-independent wavelength.´However, by continuously increasing the temperature, that CSS becomes thermally depinned. This results ina time-averaged absence of magnetic order, a process that can be viewed as the antiferromagnetic analog ofsuperparamagnetism.DOI: 10.1103/PhysRevB.91.064402 PACS number(s): 75

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