Persistent current of correlated electrons in mesoscopic ring with impurity

Impurity scattering in 1D ring of interacting electrons

The stability of the lD Luttinger hquid phase of interacting spinless particles (t V mortel) to an on-site diagonal disorder is studied by exact diagonalization of small ID

Persistent spin current in a mesoscopic hybrid ring with spin-orbit coupling.

We investigate the equilibrium property of a mesoscopic ring with a spin-orbit interaction. It is well known that, for a normal mesoscopic ring threaded by a magnetic flux, the electron acquires a Berry phase that induces the persistent (charge) current. Similarly, the spin of an electron acquires a spin Berry phase traversing a ring with a spin-orbit interaction. It is this spin Berry phase th...

Quantum Transport: Persistent Current in Mesoscopic Loops

Persistent spin current in anisotropic spin ring

The persistent spin current in an anisotropic spin ring penetrated by a SU(2) flux is studied by the Schwinger–Boson mean-field approach. The anisotropy in spin coupling can facilitate the persistent spin current. Ground-state energy and excitation-energy gap are also studied. A peak of spin current occurs at the maximum value of the ground-state energy. r 2006 Published by Elsevier B.V. PACS: ...

ENHANCEMENT of PERSISTENT CURRENT ON MULTICHANNEL RING

We describe a ”train” effect which may exist in small metallic and semiconductor rings and might be associated with the long-standing problem of the persistent current enhancement. The current is associated with the cooperative motion of N electrons constituing the N -electron ”train”. The train arises via an excitation or a backflow of spin waves or of interchannel charge density sound modes. ...