Zobrazeno 1 - 10
of 29
pro vyhledávání: '"A. U. Thomann"'
We study effects of pinning on the dynamics of a vortex lattice in a type II superconductor in the strong-pinning situation and determine the force--velocity (or current--voltage) characteristic combining analytical and numerical methods. Our analysi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7212f912cb7559d1cbc6ea8c25a9a9fa
http://arxiv.org/abs/1709.03369
http://arxiv.org/abs/1709.03369
Publikováno v:
Physica C: Superconductivity and its Applications. 468:705-708
We report on a complex zero-temperature decay channel of a classical object in a metastable state coupled to a quantum degree of freedom. This setting can be realized in a dc-SQUID where both Josephson-junctions have identical critical currents I_c b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::533aeae83c94fb733ad7d349bb3c2427
https://doi.org/10.1016/j.physc.2007.11.034
https://doi.org/10.1016/j.physc.2007.11.034
Autor:
Kirill G. Fedorov, Hannes Rotzinger, B. Mackrodt, A. K. Feofanov, Alexey V. Ustinov, Gianni Blatter, A. U. Thomann, S. Butz, R. Dolata, Vadim B. Geshkenbein
Publikováno v:
Physical Review Letters. 113
In a coupled system of one classical and one quantum mechanical degree of freedom, the quantum degree of freedom can facilitate the escape of the whole system. Such unusual escape characteristics have been theoretically predicted as "M\"unchhausen ef
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::077a24d2b65accaf28650cbf5bbd58bc
https://doi.org/10.1103/physrevlett.113.247005
https://doi.org/10.1103/physrevlett.113.247005
Autor:
Klaus Wandelt, G. Ceballos, Th. Pelzer, F Zbikowski, Th. Fauster, B. Willerding, Ch. Reuß, U. Thomann, J. Braun
Publikováno v:
Journal of Physics: Condensed Matter. 12:2193-2207
This paper deals with the electronic structure of ruthenium. Synchrotron radiation in the range from 15 to 45 eV and angle-resolved ultraviolet photoemission are used to map the energies of the electronic states. The Fermi surface of Ru is determined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acbd2baedab1f2a69597212765580ba4
https://doi.org/10.1088/0953-8984/12/10/305
https://doi.org/10.1088/0953-8984/12/10/305
Publikováno v:
Applied Physics B: Lasers and Optics. 68:531-536
The ferromagnetic exchange splitting of the lowest image-potential states has been measured for Fe films on Cu(100). The majority and minority spin contributions were separated using polarization-dependent two-photon photoemission without magnetizing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7792c5c8a6c050198a4839b3df62efe
https://doi.org/10.1007/s003400050661
https://doi.org/10.1007/s003400050661
Autor:
I. L. Shumay, F. Theilmann, A. Goldmann, C. Reuss, Th. Fauster, Martin Weinelt, U. Thomann, M. Kutschera, Ulrich Höfer
Publikováno v:
Applied Physics B: Lasers and Optics. 68:377-381
The dynamics of electrons in image-potential states has been studied by means of time- and energy- resolved two-photon photoemission. The loss of coherence in quantum-beat spectroscopy shows directly the influence of pure dephasing which can be deter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80f3bd958198b492ae598955bab9eb3a
https://doi.org/10.1007/s003400050635
https://doi.org/10.1007/s003400050635
Publikováno v:
Physical Review Letters. 82:153-156
The study of the dynamics of electrons at metal surfaces is important for the understanding of photon or electroninduced chemical reactions in adsorbate overlayers [1]. Recent progress has been advanced by the generation of ultrashort laser pulses [2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9fca2a781df6f8c652c299e4c11517e
https://doi.org/10.1103/physrevlett.82.153
https://doi.org/10.1103/physrevlett.82.153
Publikováno v:
Physical Review B. 58:13974-13981
We report time-resolved studies of image-potential states on Cu(100) and Ag(100). Femtosecond ultraviolet-pump and infrared-probe techniques combined with two-photon photoemission have been used to measure relaxation dynamics of $n=1,$ 2, and 3 image
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d22083998ce51a1d3d16c9fc612028b2
https://doi.org/10.1103/physrevb.58.13974
https://doi.org/10.1103/physrevb.58.13974
Publikováno v:
Surface Science. :1283-1287
A He resonance lamp and synchrotron radiation in the energy range from 15 to 60 eV were used to excite the valence band electrons on Cu(001) surfaces. The complete angular intensity distributions of the photoelectrons within 45° away from the surfac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::979466351318d5e46ef5ac9b75f314a8
https://doi.org/10.1016/0039-6028(95)00386-x
https://doi.org/10.1016/0039-6028(95)00386-x
Publikováno v:
Surface Science. :971-974
Ultrathin Si layers were deposited at room temperature on fcc Co(100) films grown epitaxially on Cu(100). The surfaces were studied by low-energy electron diffraction (LEED), Auger electron, and photoelectron spectroscopy using synchrotron radiation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5db831e15ad2533de2ba2948d2b5120c
https://doi.org/10.1016/0039-6028(95)00383-5
https://doi.org/10.1016/0039-6028(95)00383-5