Weyl Points in Three-Dimensional Optical Lattices: Synthetic Magnetic Monopoles in Momentum Space

被引：155

作者：

Dubcek, Tena ^{[1
]}

Kennedy, Colin J. ^{[2
]}

Lu, Ling ^{[2
]}

Ketterle, Wolfgang ^{[2
]}

Soljacic, Marin ^{[2
]}

Buljan, Hrvoje ^{[1
]}

机构：

[1] Univ Zagreb, Dept Phys, Zagreb 10000, Croatia

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 22期

基金：

美国国家科学基金会;

关键词：

TOPOLOGICAL EDGE STATES; FIELDS; ELECTRONS; ATOMS;

D O I：

10.1103/PhysRevLett.114.225301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that a Hamiltonian with Weyl points can be realized for ultracold atoms using laser-assisted tunneling in three-dimensional optical lattices. Weyl points are synthetic magnetic monopoles that exhibit a robust, three-dimensional linear dispersion, identical to the energy-momentum relation for relativistic Weyl fermions, which are not yet discovered in particle physics. Weyl semimetals are a promising new avenue in condensed matter physics due to their unusual properties such as the topologically protected "Fermi arc" surface states. However, experiments on Weyl points are highly elusive. We show that this elusive goal is well within experimental reach with an extension of techniques recently used in ultracold gases.

引用

页数：5

共 49 条

[1] Observation of vortex lattices in Bose-Einstein condensates [J].