2 papers
cond-mat.str-el2001
Competing Spin-Gap Phases in a Frustrated Quantum Spin System in Two Dimensions
Yoshihiro Takushima, Akihisa Koga, Norio Kawakami
We investigate quantum phase transitions among the spin-gap phases and the magnetically ordered phases in a two-dimensional frustrated antiferromagnetic spin system, which interpol…
cond-mat.str-el2000
Magnetic Double Structure for S=1, 1/2 Mixed-Spin Systems
Y. Takushima, A. Koga, N. Kawakami
We investigate the zero-temperature and the finite-temperature properties of the two-dimensional antiferromagnetic quantum spin system composed of the s=1/2 and s=1 spins. The spin…