Infrared absorption from charge density waves in magnetic manganites

被引：85

作者：

Calvani, P

De Marzi, G

Dore, P

Lupi, S

Maselli, P

D'Amore, F

Gagliardi, S

Cheong, SW

机构：

[1] Univ Rome La Sapienza, Ist Nazl Fis Mat, I-00185 Rome, Italy

[2] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[3] AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

[4] Rutgers State Univ, Dept Phys, Piscataway, NJ 08855 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.81.4504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The infrared absorption of charge density waves coupled to a magnetic background is first observed in two manganites La1-xCaxMnO3 with x = 0.5 and x = 0.67. In both cases a BCS-Like gap 2 Delta(T), which for x = 0.5 follows the hysteretic ferromagnetic-antiferromagnetic transition, fully opens at a finite T-0 < T-N, with 2 Delta(T-0)/k(B)T(c) similar or equal to 5. These results may also explain the unusual coexistence of charge ordering and ferromagnetism in La0.5Ca0.5MnO3. [S0031-9007(98)07720-5].

引用

页码：4504 / 4507

页数：4

共 14 条

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