Physics – Condensed Matter
Scientific paper
1996-09-17
Physics
Condensed Matter
11 pages, Revtex format, 1 figure, to be published in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.54.9328
We study possible states at low temperatures by applying the renormalization-group method to two chains of Tomonaga-Luttinger liquids with both repulsive intrachain interactions and interchain hopping. As the energy decreases below the hopping energy, three distinct regions I, III, and II appear successively depending on properties of fluctuations. The crossover from the spin-density wave (SDW) state to superconducting (SC) state takes place in region III where there are the excitation gaps of transverse charge and spin fluctuations. The competition between SDW and SC states in region III is crucial to understanding the phase diagram in the quasi-one-dimensional organic conductors.
Suzumura Yoshikazu
Yoshioka Hideo
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