Zobrazeno 1 - 10
of 310
pro vyhledávání: '"Schäpers, Th."'
The spin splitting of conduction band electrons in inversion-asymmetric InGaAs/InP quantum wells is studied by Shubnikov-de Haas measurements combining the analysis of beating patterns and coincidence measurements in doubly tilted magnetic fields. Th
Externí odkaz:
http://arxiv.org/abs/1703.07143
Autor:
Heedt, S., Ziani, N. Traverso, Crépin, F., Prost, W., Trellenkamp, St., Schubert, J., Grützmacher, D., Trauzettel, B., Schäpers, Th.
Publikováno v:
Nat. Phys. 13, 563-567 (2017)
Spin-momentum locking in a semiconductor device with strong spin-orbit coupling (SOC) is a fundamental goal of nanoscale spintronics and an important prerequisite for the formation of Majorana bound states. Such a helical state is predicted in one-di
Externí odkaz:
http://arxiv.org/abs/1701.08439
Autor:
Weyrich, C., Drögeler, M., Kampmeier, J., Eschbach, M., Mussler, G., Merzenich, T., Stoica, T., Batov, I. E., Schubert, J., Plucinski, L., Beschoten, B., Schneider, C. M., Stampfer, C., Grützmacher, D., Schäpers, Th.
Publikováno v:
Journal of Physics: Condensed Matter, Volume 28, Number 49 (2016)
Ternary (Bi1-xSbx)2Te3 films with an Sb content between 0 and 100% were deposited on a Si(111) substrate by means of molecular beam epitaxy. X-ray diffraction measurements confirm single crystal growth in all cases. The Sb content is determined by X-
Externí odkaz:
http://arxiv.org/abs/1511.00965
Publikováno v:
Pis'ma v ZhETP, vol. 101, issue 9, page 703 (2015)
We investigate the correlations of mutual positions of charge density waves nodes in side-by-side placed InAs nanowires in presence of a conductive atomic force microscope tip served as a mobile gate at helium temperatures. Scanning gate microscopy s
Externí odkaz:
http://arxiv.org/abs/1504.06449
In the current paper a set of experiments dedicated to investigations of local electronic transport in undoped InAs nanowires at helium temperatures in the presence of a charged atomic-force microscope tip is presented. Both nanowires without defects
Externí odkaz:
http://arxiv.org/abs/1405.7799
We performed measurements at helium temperatures of the electronic transport in an InAs quantum wire ($R_{wire} \sim 30$\,k$\Omega$) in the presence of a charged tip of an atomic force microscope serving as a mobile gate. The period and the amplitude
Externí odkaz:
http://arxiv.org/abs/1309.3253
Autor:
Gunel, H. Y., Batov, I. E., Hardtdegen, H., Sladek, K., Winden, A., Weis, K., Panaitov, G., Gruetzmacher, D., Schaepers, Th.
We report on the fabrication and measurements of planar mesoscopic Josephson junctions formed by InAs nanowires coupled to superconducting Nb terminals. The use of Si-doped InAs-nanowires with different bulk carrier concentrations allowed to tune the
Externí odkaz:
http://arxiv.org/abs/1205.2289
Autor:
Bringer, A., Schäpers, Th.
The spin precession in a cylindrical semiconductor nanowire due to Rashba spin-orbit coupling has been investigated theoretically using an InAs nanowire containing a surface two-dimensional electron gas as a model. The eigenstates, energy-momentum di
Externí odkaz:
http://arxiv.org/abs/1011.4557
Autor:
Hernández, S. Estévez, Akabori, M., Sladek, K., Volk, Ch., Alagha, S., Hardtdegen, H., Demarina, N., Grützmacher, D., Schäpers, Th., Pala, M. G.
We investigated the magnetotransport of InAs nanowires grown by selective area metal-organic vapor phase epitaxy. In the temperature range between 0.5 and 30 K reproducible fluctuations in the conductance upon variation of the magnetic field or the b
Externí odkaz:
http://arxiv.org/abs/1011.1556
Autor:
Schmalbuch, K., Göbbels, S., Schäfers, Ph., Rodenbücher, Ch., Schlammes, P., Schäpers, Th., Lepsa, M., Güntherodt, G., Beschoten, B.
Publikováno v:
Phys. Rev. Lett. 105, 246603 (2010)
Optical absorption of circularly polarized light is well known to yield an electron spin polarization in direct band gap semiconductors. We demonstrate that electron spins can even be generated with high efficiency by absorption of linearly polarized
Externí odkaz:
http://arxiv.org/abs/1008.0157