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Article overview
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Frequency Scaling of Microwave Conductivity in the Integer Quantum Hall Effect Minima | | R. M. Lewis
; J. P. Carini
; | | Date: |
20 Dec 2000 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | We measure the longitudinal conductivity $sigma_{xx}$ at frequencies $1.246 {
m GHz} le f le 10.05$ GHz over a range of temperatures $235 {
m mK} le T le 4.2$ K with particular emphasis on the Quantum Hall plateaus. We find that $Re(sigma_{xx})$ scales linearly with frequency for a range of magnetic field around the center of the plateaus, i.e. where $sigma_{xx}(omega) gg sigma_{xx}^{DC}$. The width of this scaling region decreases with higher temperature and vanishes by 1.2 K altogether. Comparison between localization length determined from $sigma_{xx}(omega)$ and DC measurements on the same wafer show good agreement. | | Source: | arXiv, cond-mat/0012387 | | Services: | Forum | Review | PDF | Favorites | |
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