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We fabricated AlGaAs/GaAs heterostructure-based quantum Hall devices for the resistance standard at Center for Measurement Standards (CMS). The measurements using a Direct Current Comparator (DCC) show the consistency between the plateaus of v=2 and 4 at the temperature T=2 K, where v is the filling factor. On the other hand, the plateaus of higher filling factors may be susceptible to the reduced...
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