2002/04/03 by P. D. Ye, L. W. Engel, D. C. Tsui +5 · 2 citations
Physics and Astronomy · #Condensed matter physics #Crystal (programming language) #Electron #Filling factor #Impurity #Landau quantization #Magnetic field #Maxima #Microwave #Order (exchange) #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Resonance (particle physics) #Topological Materials and Phenomena #Wigner crystal #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.89.176802
Revtex4, 4 pages, 4 figures
arxiv created 2002/04/03 · openalex publication_date 2002/10/07 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The insulator terminating the fractional quantum Hall series at low Landau level filling nu is generally taken to be a pinned Wigner crystal (WC), and exhibits a microwave resonance that is interpreted as a WC pinning mode. For a high quality sample at several densities, n, we find maxima in resonance peak frequency, f(pk), vs magnetic field, B. L, the correlation length of WC order, is calculated from f(pk). For each n, L vs nu tends at low nu toward a line with positive intercept; the fit is accurate over as much as a factor of 5 range of nu. The linear behavior is interpreted as due to B compressing the electron wave functions, to alter the effective electron-impurity interaction.