HOLDEN, Todd, Hanns HABERMEIER, Georg CRISTIANI, Andrzej GOLNIK, Alexander BORIS, Alexei PIMENOV and Josef HUMLÍČEK. Proximity induced metal-insulator transition in YBa2Cu3O7/La2/3Ca1/3MnO3 superlattices. Physical Review B. USA: The American Physical Society, 2004, vol. 69, No 6, p. 4505 1-7, 7 pp. ISSN 1098-0121.
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Basic information
Original name Proximity induced metal-insulator transition in YBa2Cu3O7/La2/3Ca1/3MnO3 superlattices
Name in Czech Přechod kov-izolátor v supermřížkách YBa2Cu3O7/La2/3Ca1/3MnO3
Authors HOLDEN, Todd (840 United States of America), Hanns HABERMEIER (276 Germany), Georg CRISTIANI (276 Germany), Andrzej GOLNIK (616 Poland), Alexander BORIS (643 Russian Federation), Alexei PIMENOV (616 Poland) and Josef HUMLÍČEK (203 Czech Republic, guarantor).
Edition Physical Review B, USA, The American Physical Society, 2004, 1098-0121.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10302 Condensed matter physics
Country of publisher United States of America
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 3.075
RIV identification code RIV/00216224:14310/04:00021198
Organization unit Faculty of Science
UT WoS 000220092100066
Keywords in English SPECTROSCOPIC ELLIPSOMETRY; SYNCHROTRON-RADIATION; ANISOTROPIC MEDIA; SUPERCONDUCTIVITY; MAGNETORESISTANCE; HETEROSTRUCTURES; FERROMAGNETISM; RUSR2GDCU2O8; COEXISTENCE; MAGNETISM
Tags ANISOTROPIC MEDIA, coexistence, FERROMAGNETISM, HETEROSTRUCTURES, magnetism, MAGNETORESISTANCE, RUSR2GDCU2O8, spectroscopic ellipsometry, Superconductivity, SYNCHROTRON-RADIATION
Tags International impact, Reviewed
Changed by Changed by: prof. RNDr. Josef Humlíček, CSc., učo 307. Changed: 9/4/2010 15:01.
Abstract
The far-infrared dielectric response of superlattices (SL) composed of superconducting YBa2Cu3O7 (YBCO) and ferromagnetic La0.67Ca0.33MnO3 (LCMO) has been investigated by ellipsometry. A drastic decrease of the free-carrier response is observed which involves an unusually large length scale of d(crit)approximate to20 nm in YBCO and d(crit)approximate to10 nm in LCMO. A corresponding suppression of metallicity is not observed in SL's where LCMO is replaced by the paramagnetic metal LaNiO3. Our data suggest that either a long-range charge transfer from the YBCO to the LCMO layers or alternatively a strong coupling of the charge carriers to the different and competitive kind of magnetic correlations in the LCMO and YBCO layers is at the heart of the observed metal-insulator transition. The low free-carrier response observed in the far-infrared dielectric response of the magnetic superconductor RuSr2GdCu2O8 is possibly related to this effect.
Abstract (in Czech)
The far-infrared dielectric response of superlattices (SL) composed of superconducting YBa2Cu3O7 (YBCO) and ferromagnetic La0.67Ca0.33MnO3 (LCMO) has been investigated by ellipsometry. A drastic decrease of the free-carrier response is observed which involves an unusually large length scale of d(crit)approximate to20 nm in YBCO and d(crit)approximate to10 nm in LCMO. A corresponding suppression of metallicity is not observed in SL's where LCMO is replaced by the paramagnetic metal LaNiO3. Our data suggest that either a long-range charge transfer from the YBCO to the LCMO layers or alternatively a strong coupling of the charge carriers to the different and competitive kind of magnetic correlations in the LCMO and YBCO layers is at the heart of the observed metal-insulator transition. The low free-carrier response observed in the far-infrared dielectric response of the magnetic superconductor RuSr2GdCu2O8 is possibly related to this effect.
Links
MSM 143100002, plan (intention)Name: Fyzikální vlastnosti nových materiálů a vrstevnatých struktur
Investor: Ministry of Education, Youth and Sports of the CR, Physical properties of new materials and layered structures
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