CURRENT SCALING IN THE INTEGER QUANTUM HALL-EFFECT

被引：92

作者：

WEI, HP ^{[1
]}

ENGEL, LW ^{[1
]}

TSUI, DC ^{[1
]}

机构：

[1] PRINCETON UNIV,DEPT ELECT ENGN,PRINCETON,NJ 08544

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.50.14609

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a current (I)-dependent transport measurement in between two adjacent integer quantum Hall plateaus at different bath temperatures (Tb) for 10 nA<I<10 μA. We find the maximum slope in ρxy scales with I when I is larger than a characteristic value. Combined with previous T scaling results, we find the current-dependent effective temperature of the two-dimensional electron gas in the integer quantum Hall effect regime, Te∼I0.5, independent of Landau levels and the spin degeneracy. This result allows us to deduce that p=2 for the T exponent of the inelastic scattering length (lin∼Te-p/2). Therefore, the values of the localization exponent ν and of the dynamical exponent z can be obtained directly and independently. © 1994 The American Physical Society.

引用

页码：14609 / 14612

页数：4

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