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In-commensurate Skyrmion crystal phases, devil staircases and multi-fractals in spin orbital coupled systems
2017-05-17  【 】【打印】【关闭

Institute of Theoretical Physics

Chinese Academy of Sciences

 Key Laboratory of Theoretical Physics

Seminar

Title

题目

In-commensurate Skyrmion crystal phases, devil staircases and multi-fractals in spin orbital coupled systems

Speaker

报告人

Jinwu Ye

Affiliation

所在单位

首都师范大学, Mississippi State university

Date

日期

11:00am, Wednesday, May 17, 2017

Venue

地点

Conference Hall 322, ITP
 

Abstract

摘要

 In this talk, we study the system of strongly interacting spinor bosons or fermions in a square lattice subject to any of the linear combinations of the Rashba and Dresselhaus spin-orbit coupling (SOC). We map out its global phase diagram which displays rich and novel quantum phases and phase transitions in the whole 2 dimensional SOC parameter space. They include masses generated from "order from quantum disorder " mechanism, collinear spin-orbital coupled magnetic phase, quantum commensurate ( C ) and In-commensurate ( IC ) non-coplanar Skyrmion crystal phases, stripe co-planar ( spiral ) C and IC phases, quantum Lifshitz C-IC transitions, metastable states, hysteresis, topological rational and irrational winding numbers, incomplete and complete devil staircases, Cantor sets, multi-fractals, etc. Various perspectives and possible connections with topological spin liquids in geometrically frustrated lattices, or Kitaev model or Sachdev-Ye-Kitaev model are discussed. Implications on current or near future cold atom systems and on so called Kitaev materials with SOC are outlined.

Contact person

所内联系人

Chushun Tian
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