Probing the gauge structure of high-temperature Superconductors

Farakos, K; Koutsoumbas, G; Mavromatos, NE

dc.contributor.author	Farakos, K	en
dc.contributor.author	Koutsoumbas, G	en
dc.contributor.author	Mavromatos, NE	en
dc.date.accessioned	2014-03-01T01:14:05Z
dc.date.available	2014-03-01T01:14:05Z
dc.date.issued	1998	en
dc.identifier.issn	0217-9792	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12856
dc.subject	Fermi Surface	en
dc.subject	Gauge Symmetry	en
dc.subject	High Temperature Superconductor	en
dc.subject	Magnetic Field	en
dc.subject	Superconductors	en
dc.subject	Thermal Conductivity	en
dc.subject	kosterlitz thouless	en
dc.subject	non perturbative	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.classification	Physics, Mathematical	en
dc.subject.other	CHIRAL-SYMMETRY-BREAKING	en
dc.subject.other	T-J MODEL	en
dc.subject.other	MAGNETIC-FIELD	en
dc.subject.other	2+1 DIMENSIONS	en
dc.subject.other	NORMAL-STATE	en
dc.subject.other	PHASE	en
dc.subject.other	ELECTRODYNAMICS	en
dc.subject.other	ANTIFERROMAGNET	en
dc.subject.other	BOSONIZATION	en
dc.subject.other	CONDUCTIVITY	en
dc.title	Probing the gauge structure of high-temperature Superconductors	en
heal.type	journalArticle	en
heal.identifier.primary	10.1142/S0217979298001459	en
heal.identifier.secondary	http://dx.doi.org/10.1142/S0217979298001459	en
heal.language	English	en
heal.publicationDate	1998	en
heal.abstract	We suggest that a spin-charge separating ansatz, leading to non-Abelian SU(2) x U-S(1) gauge symmetries in doped antiferromagnets, proposed earlier as a way of describing Kosterlitz-Thouless superconducting gaps at the nodes of the gap of d-wave (high-T-c) superconductors, may also lead to a pseudogap phase, characterized by the formation of (nonsuperconducting) pairing and the absence of phase coherence. The crucial assumption is again the presence of electrically charged Dirac fermionic excitations (holons) about the points of the (putative) Fermi surface in the pertinent phase of the superconductor. We present arguments in support of the role of nonperturbative effects (instantons) on the onset of the pseudogap phase. As a means of probing such gauge interactions experimentally, we perform a study of the scaling of the thermal conductivity with an externally-applied magnetic field, in certain effective models involving gauge and/or four-fermion (contact) interactions.	en
heal.publisher	WORLD SCIENTIFIC PUBL CO PTE LTD	en
heal.journalName	International Journal of Modern Physics B	en
dc.identifier.doi	10.1142/S0217979298001459	en
dc.identifier.isi	ISI:000076769900003	en
dc.identifier.volume	12	en
dc.identifier.issue	24	en
dc.identifier.spage	2475	en
dc.identifier.epage	2494	en