| Autor: |
Braem, Beat A., Krähenmann, Tobias, Hennel, Szymon, Reichl, Christian, Wegscheider, Werner, Ensslin, Klaus, Ihn, Thomas |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Phys. Rev. B 93, 115442 (2016) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.93.115442 |
| Popis: |
We use the voltage biased tip of a scanning force microscope at a temperature of 35\,mK to locally induce the fractional quantum Hall state of $\nu=1/3$ in a split-gate defined constriction. Different tip positions allow us to vary the potential landscape. From temperature dependence of the conductance plateau at $G=1/3 \times e^2/h$ we determine the activation energy of this local $\nu=1/3$ state. We find that at a magnetic field of 6\,T the activation energy is between 153\,$\mu$eV and 194\,$\mu$eV independent of the shape of the confining potential, but about 50\% lower than for bulk samples. |
| Databáze: |
arXiv |
| Externí odkaz: |
|
