Deformed Fermi Surface Theory of Magneto-Acoustic Anomaly in Modulated Quantum Hall Systems Near $ν=1/2$ Hall Systems Near $ν=1/2$
| dc.creator | Zimbovskaya, Nataliya A. | |
| dc.creator | Birman, Joseph L. | |
| dc.date | 1998-07-02 | |
| dc.date.accessioned | 2026-07-07T03:10:58Z | |
| dc.date.available | 2026-07-07T03:10:58Z | |
| dc.description | We introduce a new generic model of a deformed Composite Fermion-Fermi Surface (CF-FS) for the Fractional Quantum Hall Effect near $ν=1/2$ in the presence of a periodic density modulation. Our model permits us to explain the recent surface acoustic wave observations of anisotropic anomalies[R.L Willett et al,PRL vol78,4478 (1997);J.H.Smet et al, PRL vol 80,4538 (1998)] in sound velocity and attenuation--appearance of peaks and anisotropy-- which originate from contributions to the conductivity tensor due to regions of the CF-FS which are flattened by the applied modulation. The calculated magnetic field and wave vector dependence of the CF conductivity, velocity shift, and attenuation agree with experiments. | |
| dc.description | 10 Pages;Latex;No Figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9807044 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9807044 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28405 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Deformed Fermi Surface Theory of Magneto-Acoustic Anomaly in Modulated Quantum Hall Systems Near $ν=1/2$ Hall Systems Near $ν=1/2$ | |
| dc.type | text |