Details
| Original language | English |
|---|---|
| Pages (from-to) | 883-886 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 67 |
| Issue number | 7 |
| Publication status | Published - 1 Jan 1991 |
| Externally published | Yes |
Abstract
The critical exponent of the localization length in the integral quantum Hall regime can be measured directly using the Hall-bar geometries with different sizes. We obtain a universal behavior for the three lowest Landau levels. This is in agreement with the universality prediction of the field-theoretic approach to the metal-insulator transition in the quantum Hall effect. The value of =2.30.1 agrees with recent numerical studies for the lowest Landau level. The measured value of the temperature exponent of the inelastic-scattering rate is found to range from p=2.70.3 to p=3.40.4.
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In: Physical review letters, Vol. 67, No. 7, 01.01.1991, p. 883-886.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Size-dependent analysis of the metal-insulator transition in the integral quantum hall effect
AU - Koch, S.
AU - Haug, R. J.
AU - Klitzing, K. V.
AU - Ploog, K.
PY - 1991/1/1
Y1 - 1991/1/1
N2 - The critical exponent of the localization length in the integral quantum Hall regime can be measured directly using the Hall-bar geometries with different sizes. We obtain a universal behavior for the three lowest Landau levels. This is in agreement with the universality prediction of the field-theoretic approach to the metal-insulator transition in the quantum Hall effect. The value of =2.30.1 agrees with recent numerical studies for the lowest Landau level. The measured value of the temperature exponent of the inelastic-scattering rate is found to range from p=2.70.3 to p=3.40.4.
AB - The critical exponent of the localization length in the integral quantum Hall regime can be measured directly using the Hall-bar geometries with different sizes. We obtain a universal behavior for the three lowest Landau levels. This is in agreement with the universality prediction of the field-theoretic approach to the metal-insulator transition in the quantum Hall effect. The value of =2.30.1 agrees with recent numerical studies for the lowest Landau level. The measured value of the temperature exponent of the inelastic-scattering rate is found to range from p=2.70.3 to p=3.40.4.
UR - http://www.scopus.com/inward/record.url?scp=12044260031&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.67.883
DO - 10.1103/PhysRevLett.67.883
M3 - Article
AN - SCOPUS:12044260031
VL - 67
SP - 883
EP - 886
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 7
ER -