(5) 实验研究的材料,不大可能是纯粹的 Kitaev (K) 体系,海森堡交换耦合 (J) 与非对角交换作用 (Γ) 也需要考虑。Egger 他们正是基于这一实验考量,发展了较为完备的 JKΓ 哈密顿模型 (他们称之为 extended Kitaev model)。了不起之处在于,虽然这样的完备模型不可能像纯粹的 Kitaev 模型那样能得到严格解,但...
(5)实验研究的材料,不大可能是纯粹的Kitaev (K)体系,海森堡交换耦合(J)与非对角交换作用(Γ)也需要考虑。Egger他们正是基于这一实验考量,发展了较为完备的JKΓ哈密顿模型(他们称之为extended Kitaev model)。了不起之处在于,虽然这样的完备模型不可能像纯粹的Kitaev模型那样能...
^J. Nasu, Y. Kato, Y. Kamiya, and Y. Motome, Successive Majorana topological transitions driven by a magnetic field in the Kitaev model, Phys. Rev. B 98, 060416(R) (2018) ^D. C. Ronquillo, A. Vengal, and N. Trivedi, Signatures of magnetic-field-driven quantum phase transitions ...
Kitaev honeycomb model 简介1 首先提前祝大家新年快乐。 本篇文章是Kitaev honeycomb model的学习笔记,对这个模型的一些简单特性做了一些归纳,如发现错漏或是有其他comment欢迎在评论区提出。 Kitaev honeycomb model [1]是Kitaev提出的众多模型之一,是一个严格可解的Z2自旋液体 [2][3]。为什么叫Z2自旋液体?为了知...
(A) List of the low-energy gauge excitations for multilayer Kitaev models with either AA, AB, or ABC stacking and summary of the main results. (B) Visons in an AA stacked Kitaev model. (C) Dynamics of vison pairs - AB stacking. ...
We developed general approach to the calculation of power-law infrared asymptotics of spin-spin correlation functions in the Kitaev honeycomb model with different types of perturbations. We have shown that in order to find these correlation functions, one can perform averaging of some bilinear forms ...
We study the Majorana modes, both equilibrium and Floquet, which can appear at the edges of the Kitaev model on the honeycomb lattice. We first present the analytical solutions known for the equilibrium Majorana edge modes for both zigzag and armchair edges of a semi-infinite Kitaev model and ...
(B) Visons in an AA stacked Kitaev model. (C) Dynamics of vison pairs - AB stacking.作为结语,我们看到,对存在层间海森堡弱耦合的蜂窝晶格中 Kitaev 低能激发动力学,科隆大学 Achim Rosch 他们进行了视角独到的理论探索,揭示了其中拓扑激发单元 (vison, vison pair) 的运动...
A notable exception is the exactly solvable Kitaev model, in which spin degrees of freedom fractionalize into Majorana fermions and a Z(2) gauge field. Here, we discuss the physics of fractionalization in three-dimensional Kitaev models and demonstrate that the itinerant Majorana fermions g...
[1] Kitaev, A. Anyons in an exactly solved model and beyond. Ann. Phys. 321, 2 (2006). [2] Jackeli, G. & Khaliullin, G. Mott insulators in the strong spin-orbit coupling limit: From Heisenberg to a quantum...