About this Materials Science article
Quantum Phase Transition in the Three-leg Spin Nanotube by T. Sakai; K. Okunishi; K. Okamoto; M. Sato; M. Matsumoto; Y. Otsuka is a Materials Science article available to read on EtoBox.
An S 1⁄4 1 2 three-leg antiferromagnetic spin nanotube is investigated using the DMRG method and the level spectroscopy analysis combined with the numerical exact diagonalization. It is known that the system has a spin gap, when the three rung couplings are equivalent. In this paper, we see that as one of the three rung exchanges varies, a quantum phase transition occurs at a critical value of the varied rung exchange, and then the system is in a gapless Tomonaga-Luttinger-liquid phase. A ground-state phase diagram containing this phase transition is obtained by the phenomenological renormalization.
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- T. Sakai; K. Okunishi; K. Okamoto; M. Sato; M. Matsumoto; Y. Otsuka
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0304-8853)
- Published
- 2007
- Language
- EN
- Field
- Materials Science (Physical Sciences)