Lattice vibrations in spin-Peierls compound NaV2O5

被引：31

作者：

Popovic, ZV

Konstantinovic, MJ

Gajic, R

Popov, V

Raptis, YS

Vasil'ev, AN

Isobe, M

Ueda, Y

机构：

[1] Inst Phys, YU-11001 Belgrade, Serbia Monteneg

[2] Univ Sofia, Fac Phys, BU-1126 Sofia, Bulgaria

[3] Natl Tech Univ Athens, Dept Phys, Athens 15780, Greece

[4] Moscow MV Lomonosov State Univ, Low Temp Dept, Moscow 119899, Russia

[5] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan

来源：

SOLID STATE COMMUNICATIONS | 1999年 / 110卷 / 07期

关键词：

phonons; inelastic light scattering; light absorption and reflection;

D O I：

10.1016/S0038-1098(99)00081-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present the room temperature far-infrared reflectivity and Raman scattering spectra of NaV2O5 single crystals. The frequencies of infrared active modes are obtained by an oscillator fitting procedure of reflectivity data. The assignment of the vibrational modes is given according to a lattice dynamical calculation based on the valence shell model. Besides phonon modes we observed broad features centered at about 280, 550 and 3500 cm(-1) in infrared spectra for E parallel to a polarization and at about 640 cm(-1) in Raman spectra for (aa) polarization. These structures are explained as crystal-field-splitting-induced d-d electronic transitions of V4+ ions. (C) 1999 Elsevier Science Ltd. All rights reserved.

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页码：381 / 386

页数：6

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