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Titolo:
Neutron scattering studies of Zn-doped La2-xSrxCuO4
Autore:
Hirota, K;
Indirizzi:
Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan Tohoku Univ Sendai Miyagi Japan 9808578 ys, Sendai, Miyagi 9808578, Japan
Titolo Testata:
PHYSICA C
, volume: 357, anno: 2001,
parte:, 1
pagine: 61 - 68
SICI:
0921-4534(200108)357:<61:NSSOZL>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELASTIC MAGNETIC PEAKS; MUON-SPIN-RELAXATION; CUPRATE SUPERCONDUCTORS; PHASE; ORDER; LA2-XBAXCUO4; LA1.6-XND0.4SRXCUO4; TEMPERATURE; DEPENDENCE; OXIDES;
Keywords:
La2-xSrxCuO4; neutron scattering; elastic magnetic peaks; Zn substitution;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Hirota, K Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan Tohoku Univ Sendai Miyagi Japan 9808578 , Miyagi 9808578, Japan
Citazione:
K. Hirota, "Neutron scattering studies of Zn-doped La2-xSrxCuO4", PHYSICA C, 357, 2001, pp. 61-68

Abstract

This paper reviews studies of the spatial modulation of spin in La2-xSrxCuO4 (LSCO) through neutron-scattering measurements of the elastic magnetic peaks, with emphasis on Zn-doped LSCO. The elastic incommensurate magnetic peaks can be categorized in two classes with respect to the temperature dependence. Nd-doped LSCO, La2CuO4+y and LSCO with x similar to 1/8 exhibit an ordinary power law behavior. On the other hand, Zn-doped LSCO and LSCO withx = 0.02-0.07 show an exponential temperature dependence, and the correlation lengths stay short. This discrepancy can be attributed to the difference in the mechanism of pinning spin fluctuations. The former systems have pinning centers which are coherent to the lattice. In the latter, however, pinning centers are randomly scattered in the CuO2 planes, thus incoherent. The incoherent pinning model is discussed with referring to recent mu SR studies. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 04/07/20 alle ore 18:27:14