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| In-commensurate Skyrmion crystal phases, devil staircases and multi-fractals in spin orbital coupled systems |
| 2017-05-17
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Institute of Theoretical Physics |
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Chinese Academy of Sciences |
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Key Laboratory of Theoretical Physics |
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Seminar |
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Title
题目 |
In-commensurate Skyrmion crystal phases, devil staircases and multi-fractals in spin orbital coupled systems |
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Speaker
报告人 |
Jinwu Ye |
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Affiliation
所在单位 |
首都师范大学, Mississippi State university |
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Date
日期 |
11:00am, Wednesday, May 17, 2017 |
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Venue
地点 |
Conference Hall 322, ITP
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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. |
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Contact person
所内联系人 |
Chushun Tian |
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