{"product_id":"spin-fluctuations-in-itinerant-electron-magnetism-9783642825019","title":"Spin Fluctuations in Itinerant Electron Magnetism","description":"\u003cp\u003e • Author(s): Toru Moriya\u003cbr\u003e • Publisher: Springer\u003cbr\u003e • Publisher Imprint: Springer\u003cbr\u003e • BISAC: Physics - Condensed Matter\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003eFerromagnetism of metallic systems, especially those including transition metals, has been a controversial subject of modern science for a long time. This controversy sterns from the apparent dual character of the d-electrons responsible for magnetism in transition metals, i.e., they are itinerant elec- trons described by band theory in their ground state, while at finite tem- peratures they show various properties that have long been attributed to a system consisting of local magnetic moments. The most familiar example of these properties is the Curie-Weiss law of magnetic susceptibility obeyed by almost all ferromagnets above their Curie temperatures. At first the problem seemed to be centered around whether the d-elec- trons themselves are localized or itinerant. This question was settled in the 1950s and early 1960s by various experimental investigations, in particular by observations of d-electron Fermi surfaces in ferromagnetic transition metals. These observations are generally consistent with the results of band calculations. Theoretical investigations since then have concentrated on explaining this dual character of d-electron systems, taking account of the effects of electron-electron correlations in the itinerant electron model. The problem in physical terms is to study the spin density fluctuati-ons, which are ne- glected in the mean-field or one-electron theory, and their influence on the physical properties.\u003c\/p\u003e","brand":"Springer","offers":[{"title":"Paperback","offer_id":45281756872855,"sku":"9783642825019","price":5813.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3471\/1191\/files\/9783642825019.webp?v=1769300146","url":"https:\/\/atlanticbooks.com\/products\/spin-fluctuations-in-itinerant-electron-magnetism-9783642825019","provider":"Atlantic Books","version":"1.0","type":"link"}