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arXiv:1303.6233v1 [cond-mat.str-el] 22 Mar 2013 Unconventional and Exotic Magnetism in Carbon-Based Structures and Related Materials∗ A.
The Spin-Fermion Model The concept of the sp–d (or d–f ) model plays an important role in the quantum theory of magnetism.9,10,18,12,40 In this section, we consider the generalized sp–d model which describes the localized 3d(4f )-spins interacting with s(p)-like conduction (itinerant) electrons (or holes) and takes into consideration the electronelectron interaction.
Quantum Protectorate and Microscopic Models of Magnetism A.L.Kuzemsky y Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region, Russia.
We discuss fundamental problems of the physics of magnetic materials and the methods of the quantum theory of magnetism, including the method of two-time temperature Green’s functions, which is widely used in various physical problems of many-particle systems with interaction.
Think of the The whole system needs to be encompassed within several superconductive ceramic casings to prevent magnetism to nearby cars or objects and also to help with friction and counter the effects of centrifugal force.
ISSN 0030 400X, Optics and Spectroscopy, 2012, Vol.
Other question that was resolved in this first publication is the existence and explanation of the magnetism foundations.
As to the absence of sufficient magnetic pertm-bation, this is on its face a much more serious objection, as it undoubtedly proves the absence of any one large mass of iron near the locality, whether magnetized itself or only magnetized by the induction of the earth's magnetism, and also the absence of a mass of fragments of a magnetically neutral but magnetically permeable character magnetized by the inductive action of the earth.
http://thsun1.jinr.ru∼ kuzemsky 1 1 Introduction The existence and properties of localized and itinerant magnetism in metals, oxides and alloys and their interplay is an interesting and not yet fully understood problem of quantum theory of magnetism.