4 papers
Zero-field thermopower of a thin heterostructure membrane with a 2D electron gas
M. Schmidt, G. Schneider, Ch. Heyn +2
We study the low-temperature thermopower of micron sized, free-standing membranes containing a two-dimensional electron system. Suspended membranes of 320 nm thickness including a…
Thermal Conductance of Ballistic Point Contacts
Thorben Bartsch, Matthias Schmidt, Christian Heyn +1
We study the thermal conductance of ballistic point contacts. These contacts are realized as few nanometer long pillars in so called air-gap heterostructures (AGHs). The pillar len…
Spin Wave Diffraction and Perfect Imaging of a Grating
S. Mansfeld, J. Topp, K. Martens +4
We study the diffraction of Damon-Eshbach-type spin waves incident on a one-dimensional grating realized by micro slits in a thin permalloy film. By means of time-resolved scanning…
Tunneling measurements of the coulomb pseudogap in a two-dimensional electron system in a quantizing magnetic field
E. V. Deviatov, A. A. Shashkin, V. T. Dolgopolov +2
We study the Coulomb pseudogap for tunneling into the two-dimensional electron system of high-mobility (Al,Ga)As/GaAs heterojunctions subjected to a quantizing magnetic field at fi…