arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.2194cond-mat.str-el
收藏

外磁场中的非常规磁体

Unconventional magnets in external magnetic fields

R. Moessner

摘要:

这篇简短的评论调查观察到的现象时,磁场施加到一个系统的局部自旋的晶格。它的重点是在尺寸$d \geq 2$受挫磁铁。场和熵的相互作用是在它们不寻常的磁热性质的背景下说明的,场调谐简并断言自己。磁化平台可以揭示波动的物理学,与不寻常的激发(如本地模式,扩展弦缺陷或单极)参与平台终止。场调谐晶格几何形状是最后的主题,在那里的降维机制和不同的晶格类型之间的转换进行了讨论。

英文摘要:

This short review surveys phenomena observed when a magnetic field is applied to a system of localised spins on a lattice. Its focus is on frustrated magnets in dimension $d \geq 2$. The interplay of field and entropy is illustrated in the context of their unusual magnetocaloric properties, where field-tuned degeneracies assert themselves. Magnetisation plateaux can reveal the physics of fluctuations, with unusual excitations (such as local modes, extended string defects or monopoles) involved in plateau termination. Field-tuning lattice geometry is the final topic, where mechanisms for dimensional reduction and conversion between different lattice types are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑