Spin and the Coulomb Gap in the Half-Filled Lowest Landau Level

Autor:	Eisenstein, J. P., Khaire, T., Nandi, D., Finck, A. D. K., Pfeiffer, L. N., West, K. W.
Rok vydání:	2016
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 94, 125409 (2016)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.94.125409
Popis:	The Coulomb gap observed in tunneling between parallel two-dimensional electron systems, each at half filling of the lowest Landau level, is found to depend sensitively on the presence of an in-plane magnetic field. Especially at low electron density, the width of the Coulomb gap at first increases sharply with in-plane field, but then abruptly levels off. This behavior appears to coincide with the known transition from partial to complete spin polarization of the half-filled lowest Landau level. The tunneling gap therefore opens a new window onto the spin configuration of two-dimensional electron systems at high magnetic field. Comment: 6 pages, 4 postscript figures. Minor changes. To appear in Physical Review B
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1607.06171 Zobrazit plný text záznamu View this record from Arxiv