Pseudospin Ferromagnetism in Double-Quantum-Wire Systems

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Pseudospin Ferromagnetism in Double-Quantum-Wire Systems

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Title: Pseudospin Ferromagnetism in Double-Quantum-Wire Systems
Author: Wang, D.-W.; Mishchenko, E. G.; Demler, Eugene A.

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Citation: Wang, D.-W., E. G. Mishchenko, and E. Demler. 2005. “Pseudospin Ferromagnetism in Double-Quantum-Wire Systems.” Physical Review Letters 95 (8) (August 19). doi:10.1103/physrevlett.95.086802.
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Abstract: We propose that a pseudospin ferromagnetic (i.e., interwire coherent) state can exist in a system of two parallel wires of finite width in the presence of a perpendicular magnetic field. This novel quantum manybody state appears when the interwire distance decreases below a certain critical value which depends on the magnetic field. We determine the phase boundary of the ferromagnetic phase by analyzing the softening of the spin-mode velocity using the bosonization approach. We also discuss the signatures of this state in tunneling and Coulomb drag experiments.
Published Version: doi:10.1103/physrevlett.95.086802
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