Co-operative density wave and giant spin gap in the quarter-filled zigzag ladder
arXiv:cond-mat/0406525 · doi:10.1103/PhysRevLett.94.207206
Abstract
Strong co-operative 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, the spin-gap transition temperatures in which are unusually high.
arXiv comment4 pages, 4 EPS figures. accepted in Physical Review Letters
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- Infrared Investigation of the Charge Ordering Pattern in the Organic Spin Ladder Candidate (DTTTF)2Cu(mnt)2
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- Ground state and finite temperature behavior of 1/4-filled band zigzag ladders
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- A non-Hermitian Su-Schrieffer-Heeger model with the energy levels of free parafermions
- Biot-Savart law in quantum matter
- Local singlets, frustration, and unconventional superconductivity in the organic charge-transfer solids
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