Publications (37)
Sequential and co-tunneling behavior in the temperature-dependent thermopower of few-electron quantum dots
R. Scheibner, E. G. Novik, T. Borzenko +5
We have studied the temperature dependent thermopower of gate-defined, lateral quantum dots in the Coulomb blockade regime using an electron heating technique. The line shape of th…
Observation of Volkov-Pankratov states in topological HgTe heterojunctions using high-frequency compressibility
A. Inhofer, S. Tchoumakov, B. A. Assaf +13
It is well established that topological insulators sustain Dirac fermion surface states as a consequence of band inversion in the bulk. These states have a helical spin polarizatio…
Anisotropic and strong negative magneto-resistance in the three-dimensional topological insulator Bi2Se3
S. Wiedmann, A. Jost, B. Fauque +10
We report on high-field angle-dependent magneto-transport measurements on epitaxial thin films of Bi2Se3, a three-dimensional topological insulator. At low temperature, we observe…
Single valley Dirac fermions in zero-gap HgTe quantum wells
B. Büttner, C. X. Liu, G. Tkachov +8
Dirac fermions have been studied intensively in condensed matter physics in recent years. Many theoretical predictions critically depend on the number of valleys where the Dirac fe…
Current heating of a magnetic 2DEG in HgMnTe/HgCdTe quantum wells
Y. S. Gui, C. R. Becker, J. Liu +5
Heating caused by electrons with excess kinetic energy has been investigated in a magnetic two-dimensional electron gas, M2DEG, in HgMnTe/HgCdTe(001) quantum wells. The temperature…
Magnetoresistance in the in-plane magnetic field induced semi-metallic phase of inverted HgTe quantum wells
T. Khouri, S. Pezzini, M. Bendias +7
In this study we have measured the magnetoresistance response of inverted HgTe quantum wells in the presence of a large parallel magnetic field up to 33 T is applied. We show that…