伊辛模型的铁磁性

日期: 星期五(4月28日

时间:下午3:30

的地方:2241年Chamberlin大厅

发言人:约翰霍普金斯大学彼得•阿米蒂奇

文摘:1维伊辛模型是一个经典模型的经典和量子统计力学的历史意义。伊辛模型的理解的发展从根本上影响了我们的热力学知识,临界现象,磁性、保形量子场理论,粒子物理和fractionalization多体的系统。尽管伊辛模型的理论影响已经很少有一维材料在实际系统的实现。然而,它最近指出,材料CoNb2O6,有很多特性,可能使其最理想的实现一维伊辛模型的。在这个演讲我将讨论令人惊讶的复杂物理导致这个简单的模型和审查的历史“伊辛模型”从科学和人类的视角。在现代背景下我将回顾最近的实验小组和其他CoNb2O6。特别是我将展示低频光在太赫兹范围内提供了独特的见解现象产生的巨大的动物园在这个简单的模型系统。= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = (# 1)c·m·莫里斯,r·巴尔德斯Aguilar A . Ghosh s m . Koohpayeh j . Krizan r . j .静脉o . Tchernyshyov t·m·麦昆n·阿米蒂奇”层次结构的绑定状态1 d铁磁伊辛链CoNb2O6调查高分辨率时域太赫兹光谱”,理论物理。启。112,137403 (2014)。(# 2)c·m·莫里斯Nisheeta德赛,j . Viirok d . Huvonen内格尔,t .房间,j . w . Krizan r . j .静脉t·m·麦昆s . m . Koohpayeh Ribhu k Kaul n·p·阿米蒂奇,“二元性和畴壁动力学扭曲Kitaev链”,17个Nat。832 (2021)。

主持人:亚历克斯Levchenko

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