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Titolo:
Superconducting and anomalous electron transport properties and electronicstructure of BaNbO3-x and Ba2Nb5Ox films - art. no. 174512
Autore:
Gasparov, VA; Ermolov, SN; Strukova, GK; Sidorov, NS; Khassanov, SS; Wang, HS; Schneider, M; Glaser, E; Richter, W;
Indirizzi:
Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia Russian Acad Sci Chernogolovka Russia 142432 hernogolovka 142432, Russia Penn State Univ, Dept Phys, University Pk, PA 16802 USA Penn State Univ University Pk PA USA 16802 s, University Pk, PA 16802 USA Univ Jena, Inst Festkorperphys, D-07743 Jena, Germany Univ Jena Jena Germany D-07743 nst Festkorperphys, D-07743 Jena, Germany
Titolo Testata:
PHYSICAL REVIEW B
fascicolo: 17, volume: 6317, anno: 2001,
pagine: 4512 -
SICI:
0163-1829(20010501)6317:17<4512:SAAETP>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
NIOBIUM-OXIDE COMPOUNDS; X-RAY PHOTOELECTRON; MAGNETIC-PROPERTIES; LOW-TEMPERATURE; LA; SPECTROSCOPY; RESISTIVITY; PEROVSKITE; CRYSTALS; SURFACE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Gasparov, VA Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia Russian Acad Sci Chernogolovka Russia 142432 142432, Russia
Citazione:
V.A. Gasparov et al., "Superconducting and anomalous electron transport properties and electronicstructure of BaNbO3-x and Ba2Nb5Ox films - art. no. 174512", PHYS REV B, 6317(17), 2001, pp. 4512

Abstract

We have investigated the superconducting (T-c,J(c),H-c2), electron transport, structural [x-ray diffraction (XRD), Rutherford backscattering spectrometry (RBS)], and surface [x-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS)] properties of BaNbO3-x and Ba2Nb5Ox epitaxial and oriented thin films grown on different substrates (Al2O3, NdGaO3, SrTiO3, and YSZ). Superconducting films with T-c = 14 K and unusually high H-c2(0) = 28 T have been prepared on Al2O3 substrates. At the same time,films on NdGaO3 exhibit behavior similar to granular superconductors, while strong pure metal electron transport behavior of the films on SrTiO3 was observed. XPS and RES investigations show that the composition of these films is almost the same, while UPS study evidenced the Fermi edge position corresponding to semimetallic behavior of the films for all substrates.

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Documento generato il 15/01/21 alle ore 22:51:25