Numerical study on ESR by making use of Wiener-Khinchin relation in time domain

Abstract

To evaluate ESR spectrum at finite temperatures for specified spatial configurations of spins is very important issue to study quantum spin systems. Although a direct numerical estimation of the Kubo formula provides exact data, the application is limited to small size of the system because of the restriction of the computer capacity. The method of the Fourier transform of the autocorrelation function improved the restriction. As an extension of the method, we propose a new method for numerical calculation of the ESR spectrum from the time evolution of the magnetization by making use of the Wiener-Khinchin theorem.

12 pages, 6 figures; added section 3D

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Cited by in corpus (5)

• Random State Technology
• Heating Rates under Fast Periodic Driving beyond Linear Response
• Temperature- and Size-dependence of Line shape of ESR spectra of XXZ antiferromagnetic chain
• Signatures of the finite-temperature mirror symmetry breaking in the $S$=1/2 Shastry-Sutherland model
• Real-space spectral simulation of quantum spin models: Application to generalized Kitaev models