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One-dimensional effective Wigner crystal in quantum and classical regimes

DinhDuy Vu, S. Das Sarma

Dec 31, 20182 citations

One-Dimensional Wigner Crystal

ScienceJul 13, 20060 citations

Response of one-dimensional Wigner crystal to an external field

Augusto A. Melgarejo, Fernando Vericat

Physica E Low-dimensional Systems and NanostructuresMay 11, 20041 citation

Rate of equilibration of a one-dimensional Wigner crystal

К. А. Матвеев, Anton V. Andreev, Michael Pustilnik

arXiv:1109.3719Physica B Condensed MatterJan 9, 20123 citations

Remnants of the Fermi surface in the Wigner electron crystal phase of a strongly interacting one-dimensional system

A. Holas, Norman Henry March

Physics Letters AJul 1, 19916 citations

Wigner crystal physics in quantum wires

Julia S Meyer, К. А. Матвеев

The physics of interacting quantum wires has attracted a lot of attention recently. When the density of electrons in the wire is very low, the strong repulsion between electrons leads to the formation of a Wigner crystal. We review the rich spin and orbital properties of the Wigner crystal, in both the one-dimensional and the quasi-one-dimensional regimes. In the one-dimensional Wigner crystal the electron spins form an antiferromagnetic Heisenberg chain with exponentially small exchange coupling. In the presence of leads, the resulting inhomogeneity of the electron density causes a violation of spin-charge separation. As a consequence the spin degrees of freedom affect the conductance of the wire. Upon increasing the electron density, the Wigner crystal starts deviating from the strictly one-dimensional geometry, forming a zigzag structure instead. Spin interactions in this regime are dominated by ring exchanges, and the phase diagram of the resulting zigzag spin chain has a number of unpolarized phases as well as regions of complete and partial spin polarization. Finally we address the orbital properties in the vicinity of the transition from a one-dimensional to a quasi-one-dimensional state. Due to the locking between chains in the zigzag Wigner crystal, only one gapless mode exists. Manifestations of Wigner crystal physics at weak interactions are explored by studying the fate of the additional gapped low-energy mode as a function of interaction strength.The physics of interacting quantum wires has attracted a lot of attention recently. When the density of electrons in the wire is very low, the strong repulsion between electrons leads to the formation of a Wigner crystal. We review the rich spin and orbital properties of the Wigner crystal, in both the one-dimensional and the quasi-one-dimensional regimes. In the one-dimensional Wigner crystal the electron spins form an antiferromagnetic Heisenberg chain with exponentially small exchange coupling. In the presence of leads, the resulting inhomogeneity of the electron density causes a violation of spin-charge separation. As a consequence the spin degrees of freedom affect the conductance of the wire. Upon increasing the electron density, the Wigner crystal starts deviating from the strictly one-dimensional geometry, forming a zigzag structure instead. Spin interactions in this regime are dominated by ring exchanges, and the phase diagram of the resulting zigzag spin chain has a number of unpolarized phases as well as regions of complete and partial spin polarization. Finally we address the orbital properties in the vicinity of the transition from a one-dimensional to a quasi-one-dimensional state. Due to the locking between chains in the zigzag Wigner crystal, only one gapless mode exists. Manifestations of Wigner crystal physics at weak interactions are explored by studying the fate of the additional gapped low-energy mode as a function of interaction strength.

arXiv:0808.2076Journal of Physics Condensed MatterDec 10, 2008126 citations

Sliding regime of conduction in “one-dimensional Wigner crystal”

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