M.Yu. Barabanenkovb aKotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, ul. Mokhovaya 11, kor. 7, Moscow, 125009, Russian Federation bInstitute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, Chernogolovka, Moscow Region, Chernogolovka, 142432, Russian Federation
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/ Citation: Barabanenkov Yu N, Nikitov S A, Barabanenkov M Yu "Quantum fluctuations in magnetic nanostructures" Phys. Usp.62 82–91 (2019)