Quantum solitons in the sawtooth lattice

Article

关键词: GROUND-STATE;    CHAIN;    MODEL;    EXCITATIONS;    HEISENBERG;    SPIN;   

DOI  :  10.1103/PhysRevB.53.6401

来源: SCIE

【 摘 要 】

We study the sawtooth lattice of a coupled spin 1/2 Heisenberg system, a variant of the railroad-trestle lattice. The ground state of this system is twofold degenerate with periodic boundary conditions and supports kink-antikink excitations, which are distinct in this case, unlike the railroad-trestle lattice. The resulting low-temperature thermodynamics is compared with the recently discovered delafossites YCuO2.5.

【 授权许可】

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