RESEARCH PROGRESS ON COLOSSAL ANISOTROPIC MAGNETORESISTIVE EFFECT

• 来源期刊: 中国科学基金(英文版)
• 学科: 物理学
• 年，卷（期）: 2009,（1）
• 页码范围: 39-42
• 页数: 4页
• 分类号: O482.5
• 语种: 中文

摘要

Perovskite manganites show exotic functionalities due to the coupling between spin,charge,orbital and lattice,such as metal-insulator transition, colossal magnetoresistance(CMR),charge-orbital order and phase separation.Recently,an extraordinary anisotropic magnetoresistance(AMR) has been observed in perovskite manganite single crystals. The AMR value is about 2 orders larger than that of the conventional 3d transition metals and alloys, which is attributed to tunable metal-insulator transition temperature modulated by the magnetic field.This result provides a new route for exploring novel AMR materials and their applications.