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4 papers · 1 filter
Spin-gap phase in the extended t-J chain
Yu-Wen Lee, Yu-Li Lee
We study the one-dimensional deformed model in terms of the continuum field theories. We found that at low doping concentration and far away from the phase separat…
Quasiparticle Delocalization Induced by Novel Quantum Interference in Disordered d-Wave Superconductors
Y. H. Yang, D. Y. Xing, M. Liu +1
The diagrammatic approach is applied to study quasiparticle transport properties in two-dimensional d-wave superconductors with dilute nonmagnetic impurities both in Born and in un…
Ground state of graphite ribbons with zigzag edges
Yu-Li Lee, Yu-Wen Lee
We study the interaction effects on the ground state of nanographite ribbons with zigzag edges. Within the mean-field approximation, we found that there are two possible phases: th…
Chern-Simons Theory for Magnetization Plateaus of Frustrated - Heisenberg model
Ming-Che Chang, Min-Fong Yang
The magnetization curve of the two-dimensional spin-1/2 - Heisenberg model is investigated by using the Chern-Simons theory under a uniform mean-field approximation. We f…