Quantum magnetism in spin-3/2 chains

Workshop on Oxide Materials 2014: Novel Multifunctional Properties

物理学;材料科学

Hernández-Sarria, J.J.^1 ; Argüelles, A.^1 ; Rodríguez, K.^1

Departamento de Fsica, Universidad del Valle, Cali

AA25360, Colombia^1

关键词: Correlation function;    Energy spectra;    Fermionic chains;    Heisenberg models;    Hubbard Hamiltonians;    Mott-insulator phasis;    Quantum magnetism;    Quantum phasis;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/614/1/012005/pdf
DOI  :  10.1088/1742-6596/614/1/012005

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Herein, we characterize the quantum phases present in spin-3/2 fermionic chains. This system may be achieved by ultracold gases loaded onto one-dimentional optical lattices in the hard-core regime. The physics of the lowest band in general is described by the Hubbard Hamiltonian that becomes a generalized Heisenberg model in this strongly-correlated regime. By performing calculations of the energy spectrum, correlation functions, level spectroscopy and chirality we analyze the Mott-insulator phases in absence and presence of an external quadratic Zeeman field.