Quantum phase diagram of the t-J(z) chain model
Quantum phase diagram of the t-J(z) chain model
复制标题
t-J(z)链模型的量子相图
DOI：
10.1103/physrevlett.85.4755
复制
发表时间：
2000
影响因子：
8.6
通讯作者：
Ortíz
中科院分区：
文献类型：
--
作者：
Batista;Ortíz
我们给出了任意自旋（整数或半整数）和自旋-自旋相互作用J（z）符号的一维t-J（z）模型的量子相图，利用精确映射到一个无自旋费米子模型，该模型可以用Bethe近似精确求解.讨论了它的超导相随空穴掺杂数的变化。受高温超导的新范例条纹相的启发，我们还考虑了反铁磁背景对拟模仿条纹段的t-J（z）链的影响。
We present the quantum phase diagram of the one-dimensional t- J(z) model for arbitrary spin (integer or half-integer) and sign of the spin-spin interaction J(z), using an exact mapping to a spinless fermion model that can be solved exactly using the Bethe ansatz. We discuss its superconducting phase as a function of hole doping nu. Motivated by the new paradigm of high temperature superconductivity, the stripe phase, we also consider the effect the antiferromagnetic background has on the t- J(z) chain intended to mimic the stripe segments.