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Title Magnetic properties of the charged Anderson-Brinkman-Morel state: Absence of H sub c 1
Creator/Author Kita, T. (Institute for Solid State Physics, The University of Tokyo, 7-22-1 Roppongi, Minato-ku, Tokyo 106, Japan (JP))
Publication Date1991 Mar 01
OSTI IdentifierOSTI ID: 5619390
Other Number(s)ISSN0163-1829; CODEN: PRBMD
Resource TypeJournal Article
Resource RelationPhysical Review, B: Condensed Matter ; Vol/Issue: 43:7
Subject656100 -- Condensed Matter Physics-- Superconductivity; SUPERCONDUCTORS-- MAGNETIC PROPERTIES; COOPER PAIRS;FERMIONS;MATHEMATICAL MODELS;MEISSNER-OCHSENFELD EFFECT;SYMMETRY BREAKING;T INVARIANCE
Related SubjectINVARIANCE PRINCIPLES;PHYSICAL PROPERTIES
Description/Abstract Magnetic properties of the charged Anderson-Brinkman-Morel state are investigated theoretically as a special case of time-reversal-symmetry-breaking superconductivity.^The magnetic field is expressed as a superposition of the one from the supercurrent {bold j}{sup {ital s}}({bold r}) and that from the magnetic moment l({bold r}) due to the internal motion of each Cooper pair.^This procedure enables us to get rid of the paradox in zero external field that the moments are ordered (l=const) with no magnetic field nor supercurrent, leading to a natural conclusion that there is indeed a field due to l({bold r}) which is screened almost completely by {bold j}{sup {ital s}}({bold r}).^If the system size is large enough compared with the penetration depth, the direction l({bold r}) changes gradually toward the surface and the current {bold j}{sup {ital s}}({bold r}) flows over the bulk.^This means that the system is essentially nonuniform and forms a coreless vortex in zero external field.^As for the magnetization process, the lattice of coreless vortices grows from the infinitesimal external field without {ital H}{sub {ital c}1} (i.e., no Meissner state), which is subsequently followed by the first-order transition to the lattice with cores.^Finally, the transition to the normal state occurs at {ital H}{sub {ital c}2} enhanced over that of the conventional type-II superconductor due to the field l. An example of the magnetization curve is also given.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 5343-5354
System Entry Date2001 May 13

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