Author

V. Daumer

results may include different authors with the same name

4 papers

Direct observation of the Aharonov-Casher phase

Ring structures fabricated from HgTe/HgCdTe quantum wells have been used to study Aharonov-Bohm type conductance oscillations as a function of Rashba spin-orbit splitting strength. We observe non-monotonic phase changes indicating that an…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 M. Koenig , A. Tschetschetkin , E. M. Hankiewicz , Jairo Sinova , V. Hock , V. Daumer , M. Schaefer , C. R. Becker , H. Buhmann , L. W. Molenkamp

Quasi-ballistic transport in HgTe quantum-well nanostructures

The transport properties of micrometer scale structures fabricated from high-mobility HgTe quantum-wells have been investigated. A special photoresist and Ti masks were used, which allow for the fabrication of devices with characteristic…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 V. Daumer , I. Golombek , M. Gbordzoe , E. G. Novik , V. Hock , C. R. Becker , H. Buhmann , L. W. Molenkamp

Current heating of a magnetic 2DEG in HgMnTe/HgCdTe quantum wells

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 of the Mn ions, T_Mn, has been determined by the node…

Strongly Correlated Electrons · Physics 2007-05-23 Y. S. Gui , C. R. Becker , J. Liu , M. Koenig , V. Daumer , M. N. Kiselev , H. Buhmann , L. W. Molenkamp

Interplay of Rashba, Zeeman and Landau splitting in a magnetic two dimensional electron gas

The transport properties of a magnetic two dimensional electron gas consisting of a modulation doped n type HgMnTe/HgCdTe quantum well, QW, have been investigated. By analyzing the Shubnikov-de Haas oscillations and the node positions of…

Strongly Correlated Electrons · Physics 2007-05-23 Y. S. Gui , C. R. Becker , J. Liu , V. Daumer , V. Hock , H. Buhmann , L. W. Molenkamp