Unusual Magnetic Field-Dependence of the Electronic Dispersion Relations in a Hidden Ordered Phase.
Unusual Magnetic Field-Dependence of the Electronic Dispersion Relations in a Hidden Ordered Phase.
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隐藏有序相中电子色散关系的异常磁场依赖性。
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
E. Calegari
中科院分区：
文献类型：
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作者：
P. Riseborough;S. Magalhães;E. Calegari
和欠屏蔽安德森晶格模型中的轨道密度波态。自旋翻转部分的洪德规则耦合稳定的自发自旋依赖混合的5 f准粒子带，在正常状态下，具有纯轨道字符。这种转变打破了自旋-转动不变性，导致在态密度中形成非对称赝能隙。当施加磁场时，电子色散关系变得依赖于场的相对取向和自发选择的量子化轴。我们认为，这可能会导致磁化率的低温相成为各向异性，但没有静态磁化的发展。
and orbital density wave state in the underscreened Anderson Lattice Model. The spin-flip part of the Hund’s rule coupling stabilizes a spontaneous spin-dependent mixing of 5f quasiparticle bands that, in the normal state, have pure orbital characters. The transition breaks the spin-rotational invariance and leads to an asymmetric pseudo-gap which forms in the density of states. When a magnetic field is applied, the electronic dispersion relations become dependent on the relative orientation of the field and the spontaneously-chosen quantization axis. We argue that this may result in the magnetic susceptibility of the low-temperature phase becoming anisotropic, but without the development of a static magnetization.