2007/06/01 by Santanu K. Maiti, Maiti, Santanu K.
Physics and Astronomy · Engineering · #Quantum and electron transport phenomena #Molecular Junctions and Nanostructures #Semiconductor Quantum Structures and Devices
paper · pdf · doi:10.48550/arxiv.0706.0061
In the present review we make a comprehensive analysis of our understanding\non electron transport in mesoscopic single-channel rings and multi-channel\ncylinders within a tight-binding framework. A spectacular mesoscopic phenomenon\nwhere a non-decaying current circulates in a small conducting loop is observed\nupon the application of an Aharonov-Bohm flux \φ. To understand its\nbehavior one has to focus attention on the interplay of quantum phase\ncoherence, electron-electron correlation and disorder. This is a highly\nchallenging problem and here we address it for some simple loop geometries with\ntheir detailed energy band structures to get an entire picture at the\nmicroscopic level. The behavior of low-field magnetic response of persistent\ncurrent and its temperature dependence are also discussed.\n