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Titolo:
Correlation of local Jahn-Teller distortions to the magnetic/conductive states of La1-xSrxCoO3
Autore:
Louca, D; Sarrao, JL; Thompson, JD; Roder, H; Kwei, GH;
Indirizzi:
Univ Calif Los Alamos Natl Lab, Los Alamos, NM 87545 USA Univ Calif Los Alamos Natl Lab Los Alamos NM USA 87545 amos, NM 87545 USA
Titolo Testata:
PHYSICAL REVIEW B-CONDENSED MATTER
fascicolo: 14, volume: 60, anno: 1999,
pagine: 10378 - 10382
SICI:
0163-1829(19991001)60:14<10378:COLJDT>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPIN-STATE; ELECTRONIC-STRUCTURE; NEUTRON-DIFFRACTION; MAGNETIC-PROPERTIES; LACOO3; TRANSITION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Louca, D Univ Calif Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87545 USA Univ Calif Los Alamos Natl Lab POB 1663 Los Alamos NM USA 87545 A
Citazione:
D. Louca et al., "Correlation of local Jahn-Teller distortions to the magnetic/conductive states of La1-xSrxCoO3", PHYS REV B, 60(14), 1999, pp. 10378-10382

Abstract

By relating the structural changes measured using the pair density function analysis of pulsed neutron data for LaCoO3, we provide evidence for the evolution of the magnetic state with temperature, from the low-spin state topartial occupation of the intermediate spin (IS) and to the high-spin states. It can also be inferred that the coupling strength of the lattice to the e(g) electronic states is temperature dependent. The introduction of carriers in La1-xSrxCoO3 stabilizes the IS states, populated at a rate proportional to the overall carrier density. The transition to the metallic state with doping is accompanied by distortions of the lattice at short length scales, which is compatible with the picture of a Jahn-Teller glass. [S0163-1829(99)05538-1].

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Documento generato il 11/07/20 alle ore 21:10:00