Zobrazeno 1 - 10
of 272
pro vyhledávání: '"Wurstbauer U"'
Autor:
Klein, J., Kerelsky, A., Lorke, M., Florian, M., Sigger, F., Kiemle, J., Reuter, M. C., Taniguchi, T., Watanabe, K., Finley, J. J., Pasupathy, A., Holleitner, A. W., Ross, F. M., Wurstbauer, U.
Intrinsic and extrinsic disorder from lattice imperfections, substrate and environment has a strong effect on the local electronic structure and hence the optical properties of atomically thin transition metal dichalcogenides that are determined by s
Externí odkaz:
http://arxiv.org/abs/1905.01242
We study laterally trapped dipolar exciton ensembles in coupled GaAs quantum wells at high magnetic fields in the Faraday configuration. In photoluminescence experiments, we identify three magnetic field regimes. At low fields, the exciton density is
Externí odkaz:
http://arxiv.org/abs/1611.05238
Publikováno v:
J. Phys.: Condens. Matter 28 (2016) 385301
Micromechanically exfoliated mono- and multilayers of molybdenum disulfide (MoS2) are investigated by spectroscopic imaging ellipsometry. In combination with knife edge illumination, MoS2 flakes can be detected and classified on arbitrary flat and al
Externí odkaz:
http://arxiv.org/abs/1603.06644
Autor:
Levy, A. L., Wurstbauer, U., Kuznetsova, Y. Y., Pinczuk, A., Pfeiffer, L. N., West, K. W., Manfra, M. J., Gardner, G. C., Watson, J. D.
Publikováno v:
Phys. Rev. Lett. 116, 016801 (2016)
Quantum phases of electrons in the filling factor range $2 \leq\nu\leq 3$ are probed by the weak optical emission from the partially populated second Landau level and spin wave measurements. Observations of optical emission include a multiplet of sha
Externí odkaz:
http://arxiv.org/abs/1512.04914
Autor:
Wurstbauer, U., Levy, A. L., Pinczuk, A., West, K. W., Pfeiffer, L. N., Manfra, M. J., Gardner, G. C., Watson, J. D.
Publikováno v:
Phys. Rev. B 92, 241407 (2015)
We report the observation of low-lying collective charge and spin excitations in the second Landau level at {\nu} = 2 + 1/3 and also for the very fragile states at {\nu} = 2 + 2/5, 2 + 3/8 in inelastic light scattering experiments. These modes exhibi
Externí odkaz:
http://arxiv.org/abs/1507.04939
Publikováno v:
Nature Communications 6, Article number: 8981 (2015)
The fractional quantum Hall effect has inspired searches for exotic emergent topological particles, such as fractionally charged excitations, composite fermions, abelian and nonabelian anyons and Majorana fermions. Fractionally charged skyrmions, whi
Externí odkaz:
http://arxiv.org/abs/1406.4042
Autor:
Olbrich, P., Zoth, C., Lutz, P., Drexler, C., Bel'kov, V. V., Terent'ev, Ya. V., Tarasenko, S. A., Semenov, A. N., Ivanov, S. V., Yakovlev, D. R., Wojtowicz, T., Wurstbauer, U., Schuh, D., Ganichev, S. D.
We report on the study of spin-polarized electric currents in diluted magnetic semiconductor (DMS) quantum wells subjected to an in-plane external magnetic field and illuminated by microwave or terahertz radiation. The effect is studied in (Cd,Mn)Te/
Externí odkaz:
http://arxiv.org/abs/1204.6163
The low-lying neutral excitation spectrum of the incompressible quantum Hall fluid at $\nu=5/2$ is investigated by inelastic light scattering. Gapped modes are observable only in a very narrow filling factor range centered at 5/2 at energies that ove
Externí odkaz:
http://arxiv.org/abs/1204.4759
Autor:
Wurstbauer, U., Mandal, S. S., Majumder, D., Dujovne, I., Rhone, T. D., Dennis, B. S., Rigosi, A. F., Jain, J. K., Pinczuk, A., West, K. W., Pfeiffer, L. N.
Publikováno v:
Phys.Rev.Lett.107:066804,2011
We find unexpected low energy excitations of fully spin-polarized composite-fermion ferromagnets in the fractional quantum Hall liquid, resulting from a complex interplay between a topological order manifesting through new energy levels and a magneti
Externí odkaz:
http://arxiv.org/abs/1108.2901
Autor:
Karch, J., Olbrich, P., Schmalzbauer, M., Zoth, C., Brinsteiner, C., Fehrenbacher, M., Wurstbauer, U., Glazov, M. M., Tarasenko, S. A., Ivchenko, E. L., Weiss, D., Eroms, J., Yakimova, R., Lara-Avila, S., Kubatkin, S., Ganichev, S. D.
We report the observation of the circular ac Hall effect where the current is solely driven by the crossed ac electric and magnetic fields of circularly polarized radiation. Illuminating an unbiased monolayer sheet of graphene with circularly polariz
Externí odkaz:
http://arxiv.org/abs/1008.2116