000			03943nam a22004815i 4500
001			978-3-642-02487-0
003			DE-He213
005			20140220084523.0
007			cr nn 008mamaa
008			100301s2010 gw | s |||| 0|eng d
020			_a9783642024870 _9978-3-642-02487-0
024	7		_a10.1007/978-3-642-02487-0 _2doi
050		4	_aQC750-766
050		4	_aQC764.5-766
072		7	_aPHK _2bicssc
072		7	_aSCI038000 _2bisacsh
072		7	_aTEC021000 _2bisacsh
082	0	4	_a538 _223
100	1		_aKöbler, Ulrich. _eauthor.
245	1	0	_aRenormalization Group Theory _h[electronic resource] : _bImpact on Experimental Magnetism / _cby Ulrich Köbler, Andreas Hoser.
264		1	_aBerlin, Heidelberg : _bSpringer Berlin Heidelberg, _c2010.
300			_bonline resource.
336			_atext _btxt _2rdacontent
337			_acomputer _bc _2rdamedia
338			_aonline resource _bcr _2rdacarrier
347			_atext file _bPDF _2rda
490	1		_aSpringer Series in Materials Science, _x0933-033X ; _v127
505	0		_aHistory of Conventional Spin Wave Theory -- Basic Issues of Renormalization Group (RG) Theory -- Universality -- Microscopic Processes -- Non-Relevant Magnons -- Crossover Phenomena -- Metastability of Universality Classes -- Relevant and Non-Relevant Interactions -- Temperature Dependence of the Magnon Excitation Spectra -- Magnetic Heat Capacity -- Experimental Verification of GSW Bosons -- Magnets With and Without Magnon Gap (Goldstone Mode) -- Microscopic Details: Spin Structure, Site Disorder, Two Order Parameters -- The Critical Magnetic Behaviour -- Thermal Lattice Expansion and Magnetostriction -- The Total Energy Content -- Superconductivity -- Conclusions.
520			_aSpin wave theory of magnetism and BCS theory of superconductivity are typical theories of the time before renormalization group (RG) theory. The two theories consider atomistic interactions only and ignore the energy degrees of freedom of the continuous (infinite) solid. Since the pioneering work of Kenneth G. Wilson (Nobel Prize of physics in 1982) we know that the continuous solid is characterized by a particular symmetry: invariance with respect to transformations of the length scale. Associated with this symmetry are particular field particles with characteristic excitation spectra. In diamagnetic solids these are the well known Debye bosons. This book reviews experimental work on solid state physics of the last five decades and shows in a phenomenological way that the dynamics of ordered magnets and conventional superconductors is controlled by the field particles of the infinite solid and not by magnons and Cooper pairs, respectively. In the case of ordered magnets the relevant field particles are called GSW bosons after Goldstone, Salam and Weinberg and in the case of superconductors the relevant field particles are called SC bosons. One can imagine these bosons as magnetic density waves or charge density waves, respectively. Crossover from atomistic exchange interactions to the excitations of the infinite solid occurs because the GSW bosons have generally lower excitation energies than the atomistic magnons. According to the principle of relevance the dynamics is governed by the excitations with the lowest energy. The non relevant atomistic interactions with higher energy are practically unimportant for the dynamics.
650		0	_aPhysics.
650		0	_aMagnetism.
650	1	4	_aPhysics.
650	2	4	_aMagnetism, Magnetic Materials.
650	2	4	_aTheoretical, Mathematical and Computational Physics.
700	1		_aHoser, Andreas. _eauthor.
710	2		_aSpringerLink (Online service)
773	0		_tSpringer eBooks
776	0	8	_iPrinted edition: _z9783642024863
830		0	_aSpringer Series in Materials Science, _x0933-033X ; _v127
856	4	0	_uhttp://dx.doi.org/10.1007/978-3-642-02487-0
912			_aZDB-2-PHA
999			_c111413 _d111413