The problem of quantum fluctuations in magnetic nanostructures is discussed by considering a linear chain of a finite number of atoms with the electron spins of neighboring atoms interacting via exchange as in Heisenberg's theory of ferromagnetism. Electromagnetic magnetic dipole radiation from a spin flip wave is calculated. It is shown that radiation energy flux calculations including electromagnetic field quantum fluctuations give much larger values than for the averaged field. The radiation decay due to spin interaction to the quantized electromagnetic field is estimated.

Keywords: magnetic nanostructure, electron spin, exchange interaction, spin wave, quantum fluctuations, electromagnetic field, Heitler approach PACS: 75.30.Ds, 75.76.+j, 75.78.−n (all) DOI: 10.3367/UFNe.2018.07.038405 URL: https://ufn.ru/en/articles/2019/1/g/ 000462478600006 2019PhyU...62...82B Citation: Barabanenkov Yu N, Nikitov S A, Barabanenkov M Yu "Quantum fluctuations in magnetic nanostructures" Phys. Usp. 62 82–91 (2019) BibTexBibNote ® (generic)BibNote ® (RIS)Medline RefWorks RT Journal T1 Quantum fluctuations in magnetic nanostructures A1 Barabanenkov,Yu.N. A1 Nikitov,S.A. A1 Barabanenkov,M.Yu. PB Physics-Uspekhi PY 2019 FD 10 Jan, 2019 JF Physics-Uspekhi JO Phys. Usp. VO 62 IS 1 SP 82-91 DO 10.3367/UFNe.2018.07.038405 LK https://ufn.ru/en/articles/2019/1/g/ Received: 17th, October 2017, revised: 29th, June 2018, accepted: 17th, July 2018 Оригинал: Барабаненков Ю Н, Никитов С А, Барабаненков М Ю «Квантовые флуктуации в магнитных наноструктурах» УФН 189 85–94 (2019); DOI: 10.3367/UFNr.2018.07.038405