Algebraic Spin Liquid in an Exactly Solvable Spin Model.

Yao, H. ; Zhang, S. ; Kivelson, S. A.

Technical Information Center Oak Ridge Tennessee

关键词: Fermions;    Spin;    Ground states;    Excitations;    Algebra;   

RP-ID  :  DE2010974187

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

We have proposed an exactly solvable quantum spin-3/2 model on a square lattice. Its ground state is a quantum spin liquid with a half integer spin per unit cell. The fermionic excitations are gapless with a linear dispersion, while the topological vison excitations are gapped. Moreover, the massless Dirac fermions are stable. Thus, this model is, to the best of our knowledge, the first exactly solvable model of half-integer spins whose ground state is an algebraic spin liquid.