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NCUEIR > College of Science > Department of Physics > Periodical Articles > Item 987654321/14095

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:	[Department of Physics] Periodical Articles

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