Anomalous phonon-spin scattering in La1-xSrxMnO3

被引:33
作者
Ikebe, M [1 ]
Fujishiro, H [1 ]
Konno, Y [1 ]
机构
[1] Iwate Univ, Fac Engn, Dept Mat Sci & Technol, Morioka, Iwate 0208551, Japan
关键词
La1-xSrxMnO3; thermal conductivity; ferromagnetic order; phonon-spin scattering; sound velocity;
D O I
10.1143/JPSJ.67.1083
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The temperature dependence of the phonon thermal conductivity kappa(T) of La1-xSrxMnO3 (0.11 less than or equal to x less than or equal to 0.20) polycrystals was measured from 60 K to 360 K. For a: = 0.155 and 0.170, kappa(T) is markedly reduced over a wide temperature range near the ferromagnetic transition temperature T-c. The analyses of kappa(T) have revealed the existence of anomalously strong phonon scattering caused by the coupling of spin fluctuations and the lattice instability in this double exchange coupled system.
引用
收藏
页码:1083 / 1085
页数:3
相关论文
共 16 条
[1]   CONSIDERATIONS ON DOUBLE EXCHANGE [J].
ANDERSON, PW ;
HASEGAWA, H .
PHYSICAL REVIEW, 1955, 100 (02) :675-681
[2]   A STRUCTURAL PHASE-TRANSITION INDUCED BY AN EXTERNAL MAGNETIC-FIELD [J].
ASAMITSU, A ;
MORITOMO, Y ;
TOMIOKA, Y ;
ARIMA, T ;
TOKURA, Y .
NATURE, 1995, 373 (6513) :407-409
[3]  
Berman R, 1976, THERMAL CONDUCTION S
[4]   EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].
DEGENNES, PG .
PHYSICAL REVIEW, 1960, 118 (01) :141-154
[5]   Sound velocity anomaly associated with polaron ordering in La1-xSrxMnO3 [J].
Fujishiro, H ;
Ikebe, M ;
Konno, Y ;
Fukase, T .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1997, 66 (12) :3703-3705
[6]   MAGNETIC TRANSITION-TEMPERATURE OF (LA, SR)MNO3 [J].
FURUKAWA, N .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1995, 64 (08) :2754-2757
[7]  
GEBHARDT W, 1980, PHASE TRANSITION CRI
[8]  
HURANG HY, 1995, PHYS REV LETT, V75, P914
[9]  
KLEMENS PG, 1958, SOLID STATE PHYSICS
[10]   MAGNETORESISTANCE MEASUREMENTS ON THE MAGNETIC SEMICONDUCTOR ND0.5PB0.5MNO3 [J].
KUSTERS, RM ;
SINGLETON, J ;
KEEN, DA ;
MCGREEVY, R ;
HAYES, W .
PHYSICA B, 1989, 155 (1-3) :362-365