Superconducting Inhomogeneity and Local Field Variation in YBa_2Cu_3O_<7-δ> Investigated through ESR Observations
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概要
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It'nhornogeneous ESR broadening dtre to lOC2lI field xzatri?rtion XX'2TS studied ita the strper'condtrctitagYB2%2CL13O7 ,5. Tlae change in tl'ae BSR litueshttjce xvas ol.cserx'ed for a paraxxaag?aetic "spin probe"applied on otae strrfatce of' tlae pellet S2[l11l)I0. Tlae F,SR Iitae .jtrst beloxv T. exhibited teradencyof asyraunaetric bro;tdening. No',vexzen', Vll)011 fttrther cooling, tlae lineshape evolved itato dotrblepeak strtrctttre. Tlte obt?riraed ESR profiles xx'ere araalyzed xvitla the asstttaaption Ch?rt respectivepeal<s correspond to txxvo difl'erent spin sites witla tlae aid of cota?ptrter litaeslnape c?t1ctaIatioras.The linexvidtlas f'or botla sites increased lineaarly witla terrajcerattrre lceloxv 'T.,. Otu tlae other laand,flue resotaance fields varied w'ith tetaaper?tture xxery cliffererutly f'or e;tch site, iuaf'erring difl'erezace instupercondtrctivity for difl'ererat spizu positions, Nlechataisrns f'or the observed F,SR variations xveredisctmssed along xvith sotaae crossoxver poirats sttclu 2lS strpercotadtrcLirag tr?tnsition or irreversilcilitytenajceratvrres. Electron xaaicr'oscopic obser'xzations xvere 2l1SO catrr'ied otrt f'or exautainitag possibleorigiuas of the strpercoradtzcting irahoztaogeneity.
- 社団法人日本物理学会の論文
- 1999-08-15
著者
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Horai K
Department Of Applied Physics Faculty Of Science Fukuoka University
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Horai Kazumi
Department Od Applled Ohysias Facully Of Science
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Nishida A
Department Of Applied Physics Faculty Of Science Fukuoka University
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Nishida Akihiko
Department Od Applled Ohysias Facully Of Science
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TAKA Chihiro
Department of Applied Physics,Faculty of Science,Fukuoka University
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Taka Chihiro
Department Of Applied Physics Faculty Of Science Fukuoka University
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