Superconductivity in the liquid-dimer valence-bond state
Abstract
Introducing an unambiguous prescription which converts singlet dimers into quasidipoles, we describe the low-energy excitations in the liquid-dimer state as fluctuations of the average dipole moment. The exchange of these fluctuations leads to a long-range interaction between holes in this state. This interaction favors the two-particle Bose condensate and destroys the order parameter of the one-particle Bose condensate even at zero temperature.
- Publication:
-
Physical Review B
- Pub Date:
- October 1989
- DOI:
- 10.1103/PhysRevB.40.6941
- Bibcode:
- 1989PhRvB..40.6941I
- Keywords:
-
- 74.20.De;
- Phenomenological theories