High-mobility electrons in modulation-do
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E.P. De Poortere; Y.P. Shkolnikov; M. Shayegan
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Article
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2002
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Elsevier Science
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English
β 83 KB
We report on magnetoresistance measurements of two-dimensional electrons in AlAs quantum wells with mobilities up to 19 m 2 =V s. Fractional quantum Hall states at ΓΏrst-and second-order ΓΏlling factors, and up to = 11 3 , are observed. Shubnikovde Haas oscillations of high-density samples reveal that