Optical evidence of multiphase coexistence in single crystalline (La,Pr,Ca)MnO3 -: art. no. 115118

被引：57

作者：

Lee, HJ ^{[1
]}

Kim, KH

Kim, MW

Noh, TW

Kim, BG

Koo, TY

Cheong, SW

Wang, YJ

Wei, X

机构：

[1] Seoul Natl Univ, Sch Phys, Seoul 151747, South Korea

[2] Seoul Natl Univ, Res Ctr Oxide Elect, Seoul 151747, South Korea

[3] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[4] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 11期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.65.115118

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigated temperature (T)- and magnetic field-dependent optical conductivity spectra sigma(omega) of a La5/8-yPryCa3/8MnO3 (yapproximate to0.35) single crystal, showing intriguing phase coexistence at low T. At T-C<T, <T-CO, a dominant charge-ordered phase produces a large optical gap energy of similar to0.4 eV. At T<T-C, at least two absorption bands newly emerge below 0.4 eV. Analyses of sigma(omega) indicate that the bands should be attributed to a ferromagnetic metallic phase and a charge-disordered phase that coexist with the charge-ordered phase. This optical study clearly shows that La5/8-yPryCa3/8MnO3(y approximate to 0.35) is composed of multiphases that might have different lattice strains.

引用

页码：1 / 6

页数：6