TY - JOUR
T1 - Magneto-oscillations due to electron-electron interactions in the ac conductivity of a two-dimensional electron gas
AU - Sedrakyan, T. A.
AU - Raikh, M. E.
PY - 2008/2/29
Y1 - 2008/2/29
N2 - Electron-electron interactions give rise to the correction, Ï ∫(Ï), to the ac magnetoconductivity, Ï(Ï), of a clean 2D electron gas that is periodic in Ïc-1, where Ïc is the cyclotron frequency. Unlike conventional harmonics of the cyclotron resonance, which are periodic with Ï, this correction is periodic with Ï3/2. Oscillations in Ïint(Ï) develop at low magnetic fields, I cÏ, when the conventional harmonics are suppressed by the disorder. Their origin is a double backscattering of an electron from the impurity-induced Friedel oscillations. During the time Ï-1 between the two backscattering events the electron travels only a small portion of the Larmour circle.
AB - Electron-electron interactions give rise to the correction, Ï ∫(Ï), to the ac magnetoconductivity, Ï(Ï), of a clean 2D electron gas that is periodic in Ïc-1, where Ïc is the cyclotron frequency. Unlike conventional harmonics of the cyclotron resonance, which are periodic with Ï, this correction is periodic with Ï3/2. Oscillations in Ïint(Ï) develop at low magnetic fields, I cÏ, when the conventional harmonics are suppressed by the disorder. Their origin is a double backscattering of an electron from the impurity-induced Friedel oscillations. During the time Ï-1 between the two backscattering events the electron travels only a small portion of the Larmour circle.
UR - http://www.scopus.com/inward/record.url?scp=40849098127&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=40849098127&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.100.086808
DO - 10.1103/PhysRevLett.100.086808
M3 - Article
AN - SCOPUS:40849098127
SN - 0031-9007
VL - 100
JO - Physical review letters
JF - Physical review letters
IS - 8
M1 - 086808
ER -