Abstract
Strong cooperative interactions occur between four different broken symmetries involving charge ordering and bond distortions in the quarter-filled correlated zigzag electron ladder. The ground state is singlet, with spin gap several times larger than in the spin-Peierls state of the one-dimensional quarter-filled chain with the same parameters. We propose the quarter-filled zigzag electron ladder model for several different organic charge transfer solids with coupled pairs of quasi-one-dimensional stacks, in which the spin-gap transition temperatures are unusually high.
Original language | English (US) |
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Article number | 207206 |
Journal | Physical review letters |
Volume | 94 |
Issue number | 20 |
DOIs | |
State | Published - May 27 2005 |
ASJC Scopus subject areas
- Physics and Astronomy(all)