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28 papers · 1 filter
Semiclassical degeneracies and ordering for highly frustrated magnets in a field
S. R. Hassan, R. Moessner
We discuss ground state selection by quantum fluctuations in frustrated magnets in a strong magnetic field. We show that there exist dynamical symmetries -- one a generalisation of…
Coulomb drag between two spin incoherent Luttinger liquids
Gregory A. Fiete, Karyn Le Hur, Leon Balents
In a one dimensional electron gas at low enough density, the magnetic (spin) exchange energy between neighboring electrons is exponentially suppressed relative to the character…
Superconductivity and Antiferromagnetism in Quasi-one-dimensional Organic Conductors
N. Dupuis, C. Bourbonnais, J. C. Nickel
We review the current understanding of superconductivity in the quasi-one-dimensional organic conductors of the Bechgaard and Fabre salt families. We discuss the interplay between…
Pseudogap and high-temperature superconductivity from weak to strong coupling. Towards quantitative theory
A. -M. S. Tremblay, B. Kyung, D. Sénéchal
This is a short review of the theoretical work on the two-dimensional Hubbard model performed in Sherbrooke in the last few years. It is written on the occasion of the twentieth an…
Comment on ``Spin Correlations in the Paramagnetic Phase and Ring Exchange in LaCuO''
L. Raymond, G. Albinet, A. -M. S. Tremblay
It is shown that the experiments of A.M. Toader, J. P. Goff, M. Roger, N. Shannon, J. R. Stewart, and M. Enderle, Phys. Rev. Lett. 94, 197202 (2005) do not provide definitive exper…
Superconducting pairing and density-wave instabilities in quasi-one-dimensional conductors
J. C. Nickel, R. Duprat, C. Bourbonnais +1
Using a renormalization group approach, we determine the phase diagram of an extended quasi-one-dimensional electron gas model that includes interchain hopping, nesting deviations…