Metamagnetic transitions and CMR from the coexistence and competition of CDW, SDW and FM

Aperis, A; Varelogiannis, G; Littlewood, B

dc.contributor.author	Aperis, A	en
dc.contributor.author	Varelogiannis, G	en
dc.contributor.author	Littlewood, B	en
dc.date.accessioned	2014-03-01T01:31:05Z
dc.date.available	2014-03-01T01:31:05Z
dc.date.issued	2009	en
dc.identifier.issn	17426588	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19738
dc.subject.other	Bi-layer	en
dc.subject.other	Density waves	en
dc.subject.other	Electron hole	en
dc.subject.other	External magnetic field	en
dc.subject.other	First order transitions	en
dc.subject.other	Generalized mean-field theory	en
dc.subject.other	Heavy fermion systems	en
dc.subject.other	Itinerant metamagnetism	en
dc.subject.other	Metamagnetic transitions	en
dc.subject.other	Open problems	en
dc.subject.other	Order parameter	en
dc.subject.other	Particle-hole asymmetry	en
dc.subject.other	Particle-hole symmetry	en
dc.subject.other	Charge density waves	en
dc.subject.other	Electric resistance	en
dc.subject.other	Magnetic field effects	en
dc.subject.other	Manganese oxide	en
dc.subject.other	Manganites	en
dc.subject.other	Mean field theory	en
dc.subject.other	Metamagnetism	en
dc.subject.other	Oxide minerals	en
dc.subject.other	Colossal magnetoresistance	en
dc.title	Metamagnetic transitions and CMR from the coexistence and competition of CDW, SDW and FM	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/1742-6596/150/4/042007	en
heal.identifier.secondary	http://dx.doi.org/10.1088/1742-6596/150/4/042007	en
heal.identifier.secondary	042007	en
heal.publicationDate	2009	en
heal.abstract	We present the results of a generalized mean-field theory of all the conventional electron-hole condensates CDW,SDW and FM taken on the same footing using an eight dimensional spinor formalism. We study in detail the influence of temperature, particle-hole symmetry and external magnetic fields on the interplay of these three order parameters. We show that particle-hole asymmetry implies the presence of either one or else all three order parameters. Considering all order parameters on the same footing we reveal novel phenomena in the presence of a magnetic field like field-induced density waves, single and double first order transitions to itinerant metamagnetism as well as negative colossal magnetoresistance. We argue that the coexistence of CDW, SDW and FM is a quite generic phenomenon that may be involved in a number of open problems of great interest like for example the CMR phenomenon in manganites [4], the metamagnetic transitions in bilayer ruthenites and in heavy fermion systems etc. © 2009 IOP Publishing Ltd.	en
heal.journalName	Journal of Physics: Conference Series	en
dc.identifier.doi	10.1088/1742-6596/150/4/042007	en
dc.identifier.volume	150	en
dc.identifier.issue	4	en