Landau-Zener tunneling in 2D periodic structures in the presence of a gauge field II: Electric breakdown

Autor:	Maksimov, D. N., Chesnokov, I. Yu., Makarov, D. V., Kolovsky, A. R.
Rok vydání:	2013
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Zdroj:	J. Phys. B: At. Mol. Opt. Phys. {\bf 46} (2013), 145302 (6 pages)
Druh dokumentu:	Working Paper
DOI:	10.1088/0953-4075/46/14/145302
Popis:	We analyze dynamics of a quantum particle in a square lattice in the Hall configuration beyond the single-band approximation. For vanishing gauge (magnetic) field this dynamics is defined by the inter-band Landau-Zener tunneling, which is responsible for the phenomenon known as the electric breakdown. We show that in the presence of a gauge field this phenomenon is absent, at least, in its common sense. Instead, the Landau-Zener tunneling leads to appearance of a finite current which flows in the direction orthogonal to the vector of a potential (electric) field. Comment: 12 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1303.0641 Zobrazit plný text záznamu View this record from Arxiv