Details
| Original language | English |
|---|---|
| Pages (from-to) | 76-82 |
| Number of pages | 7 |
| Journal | JETP letters |
| Volume | 63 |
| Issue number | 1 |
| Publication status | Published - 10 Jan 1996 |
| Externally published | Yes |
Abstract
Experimental investigations of thermally activated dissipative conductivity σxx in the fractional quantum Hall effect at filling factors v=1/3 and near zero were performed with GaAs/AlGaAs heterojunction based field-effect transistors with an electronic channel. To within our accuracy of 10%, the pre-exponential factor measured for v= 1/3 is equal to 2e*2/h (e*=e/3 is the charge of the quasiparticles), the value expected for the case when the quasielectrons and quasiholes make the same contribution to the conductivity. The observed change in the temperature dependence of the conductivity when v deviates from 1/3 is associated with the change in the filling of the energy levels of the quasielectrons and quasiholes and indicates that there is no gap in the quasiparticle density of states averaged over the sample.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: JETP letters, Vol. 63, No. 1, 10.01.1996, p. 76-82.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Thermally activated dissipative conductivity in the fractional quantum Hall effect regime
AU - Dorozhkin, S. I.
AU - Dorokhova, M. O.
AU - Haug, R. J.
AU - Von Klitzing, K.
AU - Ploog, K.
PY - 1996/1/10
Y1 - 1996/1/10
N2 - Experimental investigations of thermally activated dissipative conductivity σxx in the fractional quantum Hall effect at filling factors v=1/3 and near zero were performed with GaAs/AlGaAs heterojunction based field-effect transistors with an electronic channel. To within our accuracy of 10%, the pre-exponential factor measured for v= 1/3 is equal to 2e*2/h (e*=e/3 is the charge of the quasiparticles), the value expected for the case when the quasielectrons and quasiholes make the same contribution to the conductivity. The observed change in the temperature dependence of the conductivity when v deviates from 1/3 is associated with the change in the filling of the energy levels of the quasielectrons and quasiholes and indicates that there is no gap in the quasiparticle density of states averaged over the sample.
AB - Experimental investigations of thermally activated dissipative conductivity σxx in the fractional quantum Hall effect at filling factors v=1/3 and near zero were performed with GaAs/AlGaAs heterojunction based field-effect transistors with an electronic channel. To within our accuracy of 10%, the pre-exponential factor measured for v= 1/3 is equal to 2e*2/h (e*=e/3 is the charge of the quasiparticles), the value expected for the case when the quasielectrons and quasiholes make the same contribution to the conductivity. The observed change in the temperature dependence of the conductivity when v deviates from 1/3 is associated with the change in the filling of the energy levels of the quasielectrons and quasiholes and indicates that there is no gap in the quasiparticle density of states averaged over the sample.
UR - http://www.scopus.com/inward/record.url?scp=0007492780&partnerID=8YFLogxK
U2 - 10.1134/1.566966
DO - 10.1134/1.566966
M3 - Article
AN - SCOPUS:0007492780
VL - 63
SP - 76
EP - 82
JO - JETP letters
JF - JETP letters
SN - 0021-3640
IS - 1
ER -