Abstract
We consider a narrow one-dimensional tight-binding chain with intra-atomic Coulomb repulsions described in the Hubbard model. The electrons at each site are furthermore assumed to be coupled to a high-frequency local oscillator. In the limit where the oscillator frequency is large compared to the bandwidth, and in the extreme-band-narrowing regime, for various electron densities, we find that: the half-filled-band ground state is an antiferromagnetic insulator; the one-third-filled-band ground state is a diamagnetic insulator; and the one-quarter-filled-band ground state is a weakly coupled system of bound singlet pairs somewhat reminiscent of superconductivity.
Keywords
PhysicsCondensed matter physicsPolaronGround stateDiamagnetismElectronAntiferromagnetismCoulombElectronic band structureAtomic physicsMagnetic fieldQuantum mechanics
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Publication Info
- Year
- 1974
- Type
- article
- Volume
- 10
- Issue
- 5
- Pages
- 1896-1901
- Citations
- 60
- Access
- Closed
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Cite This
G. Beni,
P. Pincus,
Junjiro Kanamori
(1974).
Low-temperature properties of the one-dimensional polaron band. I. Extreme-band-narrowing regime.
Physical review. B, Solid state
, 10
(5)
, 1896-1901.
https://doi.org/10.1103/physrevb.10.1896
Identifiers
- DOI
- 10.1103/physrevb.10.1896