ON THE RESPONSE OF COMPOSITE FERMIONS TO WEAK ELECTROSTATIC POTENTIALS

Autor:	Behnam Farid
Rok vydání:	2004
Předmět:	Physics Quantum mechanics Quantum electrodynamics Fractional quantum Hall effect Composite fermion Ginzburg–Landau theory Statistical and Nonlinear Physics Landau quantization Electron Condensed Matter Physics Magnetic field
Zdroj:	International Journal of Modern Physics B. 18:3047-3055
ISSN:	1793-6578 0217-9792
Popis:	We establish that the response to static perturbations of two-dimensional electron systems (2DESs), exposed to magnetic field B, in states with the Landau-level filling fractions ν e close to one such as 1/2, is singularly different from that of 2DESs at small ‖B‖. Thus in addition to demonstrating the severe inadequacy of the treatment of composite fermions as non-interacting particles, we show, in contradiction to a recent theoretical finding, that the physical origin of the observed behavior of the dc longitudinal magneto-resistivity for ν e ≈1/2 in periodically modulated 2DESs remains to be determined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1dc0b9c766d6de768a35e2856293c8f4 https://doi.org/10.1142/s0217979204026378 Zobrazit plný text záznamu