Relaxation in Antiferromagnets due to Spin-Wave Interactions | Zendy

A. B. Harris | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Relaxation in Antiferromagnets due to Spin-Wave Interactions

Author(s) -

A. B. Harris

Publication year - 1966

Publication title -

journal of applied physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.699

H-Index - 319

eISSN - 1089-7550

pISSN - 0021-8979

DOI - 10.1063/1.1708364

Subject(s) - antiferromagnetism , laser linewidth , physics , condensed matter physics , perturbation theory (quantum mechanics) , perturbation (astronomy) , spin wave , relaxation (psychology) , quantum mechanics , ferromagnetism , psychology , social psychology , laser

For an antiferromagnet it is shown that within perturbation theory the Holstein‐Primakoff and Dyson‐Maleev transformations do not lead to identical results for either the static or dynamic properties. By examining the spin Green's functions we justify the use of the Dyson‐Maleev transformation when there are few spin waves present. Using second‐order perturbation theory we find the antiferromagnetic resonance linewidth to be Δω0=(64ωAω0/π3S2ωE)(kT/ℏωE)2exp(−ℏω0/kT) for kT≪ℏω0 and Δω0=[40ωAζ(3)/π3S2](kT/ℏωE)3 for ℏω0≪kT≪ℏωE, in qualitative agreement with the experimental results for MnF2.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research