Scaling behavior of spectral weight changes in perovskite manganites La0.7-yPryCa0.3MnO3

被引：37

作者：

Kim, KH ^{[1
]}

Jung, JH

Eom, DJ

Noh, TW

Yu, JJ

Choi, EJ

机构：

[1] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[2] LG Corp Inst Technol, Seoul 137140, South Korea

[3] Sogang Univ, Dept Phys, Seoul 121742, South Korea

[4] Seoul City Univ, Dept Phys, Seoul 130743, South Korea

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.81.4983

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Optical conductivity spectra of La0.7-yPryCa0.3MnO3 were systematically investigated. For metallic samples, the spectral weight below 0.5 eV, whose magnitude can be represented by an effective carrier number N-eff(0.5 eV), increases as temperature becomes lower. Regardless of the Pr doping, all the measured values of N-eff(0.5 eV)/T-C fall into one scaling curve. This scaling behavior could be explained by the theoretical model by Roder et al. [Phys. Rev. Lett. 76, 1356 (1996)], which includes spin double exchange and Jahn-Teller lattice coupling to holes. [S0031-9007(98)07714-X].

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页码：4983 / 4986

页数：4

相关论文

共 27 条

[1] Mid-infrared properties of a VO2 film near the metal-insulator transition [J].

Choi, HS ;

Ahn, JS ;

Jung, JH ;

Noh, TW ;

Kim, DH .

PHYSICAL REVIEW B, 1996, 54 (07) :4621-4628

[2] ELECTRON LOCALIZATION IN MIXED-VALENCE MANGANITES [J].

COEY, JMD ;

VIRET, M ;

RANNO, L ;

OUNADJELA, K .

PHYSICAL REVIEW LETTERS, 1995, 75 (21) :3910-3913

[3] MOTT INSULATOR TO CORRELATED METAL - OPTICAL STUDY OF LA1-XTIO3 [J].

CRANDLES, DA ;

TIMUSK, T ;

GARRETT, JD ;

GREEDAN, JE .

PHYSICAL REVIEW B, 1994, 49 (23) :16207-16213

[4] Temperature dependence of optical conductivity in double-exchange ferromagnet La1-xSrxMnO3 [J].

de Brito, PE ;

Shiba, H .

PHYSICAL REVIEW B, 1998, 57 (03) :1539-1543

[5] LATTICE EFFECTS ON THE MAGNETORESISTANCE IN DOPED LAMNO3 [J].

HWANG, HY ;

CHEONG, SW ;

RADAELLI, PG ;

MAREZIO, M ;

BATLOGG, B .

PHYSICAL REVIEW LETTERS, 1995, 75 (05) :914-917

[6] Orbital liquid in perovskite transition-metal oxides [J].

Ishihara, S ;

Yamanaka, M ;

Nagaosa, N .

PHYSICAL REVIEW B, 1997, 56 (02) :686-692

[7] Optical probe of anisotropic and incoherent charge dynamics in a layered ferromagnet:: La1.2Sr1.8Mn2O7 [J].

Ishikawa, T ;

Kimura, T ;

Katsufuji, T ;

Tokura, Y .

PHYSICAL REVIEW B, 1998, 57 (14) :R8079-R8082

[8] Midgap states of La1-xCaxMnO3:: Doping-dependent optical-conductivity studies [J].

Jung, JH ;

Kim, KH ;

Noh, TW ;

Choi, EJ ;

Yu, J .

PHYSICAL REVIEW B, 1998, 57 (18) :R11043-R11046

[9] Determination of electronic band structures of CaMnO3 and LaMnO3 using optical-conductivity analyses [J].

Jung, JH ;

Kim, KH ;

Eom, DJ ;

Noh, TW ;

Choi, EJ ;

Yu, JJ ;

Kwon, YS ;

Chung, Y .

PHYSICAL REVIEW B, 1997, 55 (23) :15489-15493

[10] Optical evidence for the dynamic Jahn-Teller effect in Nd0.7Sr0.3MnO3 [J].

Kaplan, SG ;

Quijada, M ;

Drew, HD ;

Tanner, DB ;

Xiong, GC ;

Ramesh, R ;

Kwon, C ;

Venkatesan, T .

PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2081-2084