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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/14095

Title: Ground State of Graphite Ribbons with Zigzag Edges
Authors: Lee, Yu-Li;Lee, Yu-Wen
Contributors: 物理學系
Date: 2002
Issue Date: 2012-09-10T06:07:45Z
Publisher: The American Physical Society
Abstract: We study the interaction effects on the ground state of nanographite ribbons with zigzag edges. Within the mean-field approximation, we find that there are two possible phases: the singlet superconducting (SS) phase and the excitonic insulator (EI) phase. The two phases are separated by a first-order transition point. After taking into account the low-lying fluctuations around the mean-field solutions, the SS phase becomes a spin liquid phase with one gapless charge mode. On the other hand, all excitations in the EI phase, especially the spin excitations, are gapped.
Relation: Phys. Rev. B, 66(24): 245402
Appears in Collections:[物理學系] 期刊論文

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