Local lattice distortion during the spin-state transition in LaCoO3

被引：286

作者：

Yamaguchi, S ^{[1
]}

Okimoto, Y ^{[1
]}

Tokura, Y ^{[1
]}

机构：

[1] UNIV TOKYO, DEPT APPL PHYS, TOKYO 113, JAPAN

来源：

PHYSICAL REVIEW B | 1997年 / 55卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.55.R8666

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Infrared spectroscopy of a LaCoO3 crystal has revealed anomalous splitting of the phonon modes as well as their intensity variation with temperature during the spin-state transition. The observed results can be interpreted in terms of local lattice distortion arising from the Jahn-Teller effect of the thermally excited intermediate-spin (S=1) state of Co3+ ions. A possible role of the e(g) orbital ordering is discussed with the analysis of the intensity variation of the split Co-O stretching modes.

引用

页码：R8666 / R8669

页数：4

共 20 条

[1] ELECTRONIC-STRUCTURE AND SPIN-STATE TRANSITION OF LACOO3 [J].

ABBATE, M ;

FUGGLE, JC ;

FUJIMORI, A ;

TJENG, LH ;

CHEN, CT ;

POTZE, R ;

SAWATZKY, GA ;

EISAKI, H ;

UCHIDA, S .

PHYSICAL REVIEW B, 1993, 47 (24) :16124-16130

[2] NEUTRON-SCATTERING STUDY OF THE SPIN-STATE TRANSITION AND MAGNETIC CORRELATIONS IN LA1-XSRXCOO3 (X=0 AND 0.08) [J].

ASAI, K ;

YOKOKURA, O ;

NISHIMORI, N ;

CHOU, H ;

TRANQUADA, JM ;

SHIRANE, G ;

HIGUCHI, S ;

OKAJIMA, Y ;

KOHN, K .

PHYSICAL REVIEW B, 1994, 50 (05) :3025-3032

[3] TEMPERATURE-INDUCED MAGNETISM IN LACOO3 [J].

ASAI, K ;

GEHRING, P ;

CHOU, H ;

SHIRANE, G .

PHYSICAL REVIEW B, 1989, 40 (16) :10982-10985

[4] MOSSBAUER STUDIES OF HIGH-SPIN-LOW-SPIN EQUILIBRIA AND LOCALIZED-COLLECTIVE ELECTRON TRANSITION IN LACOO3 [J].

BHIDE, VG ;

RAO, GR ;

RAO, CNR ;

RAJORIA, DS .

PHYSICAL REVIEW B, 1972, 6 (03) :1021-&

[5] INFRARED-SPECTROSCOPY IN KNBO3 THROUGH THE SUCCESSIVE FERROELECTRIC PHASE-TRANSITIONS [J].

FONTANA, MD ;

METRAT, G ;

SERVOIN, JL ;

GERVAIS, F .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1984, 17 (03) :483-514

[6] MAGNETIC + ELECTRICAL ANOMALIES IN LACO03 [J].

HEIKES, RR ;

MAZELSKY, R ;

MILLER, RC .

PHYSICA, 1964, 30 (08) :1600-&

[7] SPIN-STATE AND HYPERFINE INTERACTION IN LACOO3 - NMR AND MAGNETIC-SUSCEPTIBILITY STUDIES [J].

ITOH, M ;

SUGAHARA, M ;

NATORI, I ;

MOTOYA, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (10) :3967-3977

[8] CO-59 AND LA-139 NMR-STUDIES OF THE SPIN-STATE IN LACOO3 [J].

ITOH, M ;

NATORI, I .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 140 (pt 3) :2145-2146

[9] Intermediate-spin state and properties of LaCoO3 [J].

Korotin, MA ;

Ezhov, SY ;

Solovyev, IV ;

Anisimov, VI ;

Khomskii, DI ;

Sawatzky, GA .

PHYSICAL REVIEW B, 1996, 54 (08) :5309-5316

[10] PRESSURE DEPENDENCE OF LONG-WAVELENGTH OPTICAL PHONONS IN IONIC CRYSTALS [J].

MITRA, SS ;

POSTMUS, C ;

FERRARO, JR .

PHYSICAL REVIEW LETTERS, 1967, 18 (12) :455-+

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