Zobrazeno 1 - 10
of 250
pro vyhledávání: '"Dreiser, J."'
Autor:
Hernandez, N Ortiz, Parchenko, S, Mardegan, J R L, Porer, M, Schierle, E, Weschke, E, Ramakrishnan, M, Radovic, M, Heuver, J A, Noheda, B, Daffe, N, Dreiser, J, Ueda, H., Staub, U
Publikováno v:
Phys. Rev. B 103, 085123 (2021)
We report a soft x-ray resonant magnetic scattering study of the spin configuration in multiferroic thin films of Co$_{0.975}$Ge$_{0.025}$Cr$_2$O$_4$ (Ge-CCO) and CoCr$_2$O$_4$ (CCO), under low- and high-magnetic fields, from 0.2 T up to 6.5 T. A cha
Externí odkaz:
http://arxiv.org/abs/2010.01518
Autor:
Staub, U., Rettig, L., Bothschafter, E. M., Windsor, Y. W., Ramakrishnan, M., Avula-Venkata, S. R., Dreiser, J., Piamonteze, C., Scagnoli, V., Mukherjee, S., Niedermayer, C., Medarde, M., Pomjakushina, E.
Publikováno v:
Phys. Rev. B 96, 174408 (2017)
X-ray magnetic circular and linear dichroism (XMCD and XMLD) have been used to investigate the Fe magnetic response during the spin reorientation transition (SRT) in TmFeO3. These experiments are complemented with resonant magnetic diffraction experi
Externí odkaz:
http://arxiv.org/abs/1705.00827
Autor:
Heidler, J., Fechner, M., Chopdekar, R. V., Piamonteze, C., Dreiser, J., Jenkins, C. A., Rusponi, S., Brune, H., Spaldin, N. A., Nolting, F.
Publikováno v:
Phys. Rev. B 94, 014401 (2016)
We study the coexistence of strain- and charge-mediated magnetoelectric coupling in a cobalt (0-7 nm) wedge on ferroelectric [Pb(Mg$_{1/3}$/Nb$_{2/3}$)O$_{3}$]$_{0.68}$-[PbTiO$_{3}$]$_{0.32}$ (011) using surface-sensitive x-ray magnetic circular dich
Externí odkaz:
http://arxiv.org/abs/1509.03541
Autor:
Baumann, S., Donati, F., Stepanow, S., Rusponi, S., Paul, W., Gangopadhyay, S., Rau, I. G., Pacchioni, G. E., Gragnaniello, L., Pivetta, M., Dreiser, J., Piamonteze, C., Lutz, C. P., Macfarlane, R. M., Jones, B. A., Gambardella, P., Heinrich, A. J., Brune, H.
We combine density functional theory, x-ray magnetic circular dichroism, multiplet calculations, and scanning tunneling spectroscopy to assess the magnetic properties of Fe atoms adsorbed on a thin layer of MgO(100) on Ag(100). Despite the strong axi
Externí odkaz:
http://arxiv.org/abs/1506.07807
Autor:
Dreiser, J., Waldmann, O., Dobe, C., Carver, G., Ochsenbein, S. T., Sieber, A., Güdel, H. U., van Duijn, J., Taylor, J., Podlesnyak, A.
Publikováno v:
Phys. Rev. B 81, 024408 (2010)
We report on inelastic neutron scattering (INS) measurements on the molecular spin ring CsFe$_8$, in which eight spin-5/2 Fe(III) ions are coupled by nearest-neighbor antiferromagnetic Heisenberg interaction. We have recorded INS data on a non-deuter
Externí odkaz:
http://arxiv.org/abs/1001.3755
Autor:
Latta, C., Högele, A., Zhao, Y., Vamivakas, A. N., Maletinsky, P., Kroner, M., Dreiser, J., Carusotto, I., Badolato, A., Schuh, D., Wegscheider, W., Atature, M., Imamoglu, A.
Resonant laser scattering along with photon correlation measurements have established the atom-like character of quantum dots. Here, we present measurements which challenge this identification for a wide range of experimental parameters: the absorpti
Externí odkaz:
http://arxiv.org/abs/0904.4767
Autor:
Vamivakas, A. N., Atature, M., Dreiser, J., Yilmaz, S. T., Badolato, A., Swan, A. K., Goldberg, B. B., Imamoglu, A., Unlu, M. S.
Publikováno v:
Nano Letters, 7, 2892-2896 (2007).
Through the utilization of index-matched GaAs immersion lens techniques we demonstrate a record extinction (12%) of a far-field focused laser by a single InAs/GaAs quantum dot. This contrast level enables us to report for the first time resonant lase
Externí odkaz:
http://arxiv.org/abs/0706.3004
Autor:
Högele, A., Seidl, S., Kroner, M., Karrai, K., Atatüre, M., Dreiser, J., Imamoglu, A., Warburton, R. J., Gerardot, B. D., Petroff, P. M.
Publikováno v:
Journal of Superconductivity 18 (2), 245-249 (2005)
The ground state of neutral and negatively charged excitons confined to a single self-assembled InGaAs quantum dot is probed in a direct absorption experiment by high resolution laser spectroscopy. We show how the anisotropic electron-hole exchange i
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410687
Autor:
Högele, A., Kroner, M., Seidl, S., Karrai, K., Atatüre, M., Dreiser, J., Imamoğlu, A., Warburton, R. J., Badolato, A., Gerardot, B. D., Petroff, P. M.
Publikováno v:
Appl. Phys. Lett. 86, 221905 (2005)
We investigate high resolution laser absorption spectroscopy of a single InGaAs/GaAs self-assembled quantum dot embedded in a field-effect structure. We show experimentally that the interband optical absorption to the lower Zeeman branch of the singl
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410506
Autor:
Donati, F., Rusponi, S., Stepanow, S., Wäckerlin, C., Singha, A., Persichetti, L., Baltic, R., Diller, K., Patthey, F., Fernandes, E., Dreiser, J., Šljivančanin, Ž., Kummer, K., Nistor, C., Gambardella, P., Brune, H.
Publikováno v:
Science, 2016 Apr . 352(6283), 318-321.
Externí odkaz:
http://www.jstor.org/stable/24744389
