Quantized magnetic confinement in quantum wires

Autor:	Tarasov, A., Hugger, S., Xu, Hengyi, Cerchez, M., Heinzel, T., Zozoulenko, I. V., Gasser-Szerer, U., Reuter, D., Wieck, A. D.
Rok vydání:	2009
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. Lett. 104, 186801 (2010)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.104.186801
Popis:	Ballistic quantum wires are exposed to longitudinal profiles of perpendicular magnetic fields composed of a spike (magnetic barrier) and a homogeneous part. An asymmetric magnetoconductance peak as a function of the homogeneous magnetic field is found, comprising quantized conductance steps in the interval where the homogeneous magnetic field and the magnetic barrier have identical polarities, and a characteristic shoulder with several resonances in the interval of opposite polarities. The observations are interpreted in terms of inhomogeneous diamagnetic shifts of the quantum wire modes leading to magnetic confinement. Comment: 4 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0907.1802 Zobrazit plný text záznamu View this record from Arxiv