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[理论室报告] Chiral Spin Condensates and Spontaneous Spin Hall Effects
时间: 2017年03月03日 10:00
地点: M830
报告人: Xiaopeng Li

Fudan University

Abstract: Spontaneous chiral symmetry breaking plays a fundamental role in a variety of complex systems in Nature, including physical, chemical and also biological objects. Recently chiral symmetry breaking has attracted considerable interests in quantum many-body physics such as topological superconductivity in strontium ruthenates and exotic atomic Bose-Einstein condensates in optical lattices. This talk will be focusing on the interplay of chirality and spin degrees of freedom. I will present our finding of a chiral spin condensate with generic chirality-spin locking originated from interaction effects for spinor bosons in double-valley optical lattices. Our results are independent of microscopic details. For optical lattices that break the inversion symmetry, the chiral spin condensate exhibits

References
XL, S. Natu et al., Nature Communications 5: 5174 (2014);
Ying-Hai Wu, XL *, S. Das Sarma, arXiv: 1702.01439 (2017)
spontaneous spin-Hall effects in spite of absence of bare spin-orbit couplings. 

Host: Zi Yang Meng (9331)


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