Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Hudl, Matthias"'
Autor:
Scalera, Valentino, Hudl, Matthias, Neeraj, Kumar, Perna, Salvatore, d'Aquino, Massimiliano, Bonetti, Stefano, Serpico, Claudio
Demagnetization in a thin film due to a terahertz pulse of magnetic field is investigated. Linearized LLG equation in the Fourier space to describe the magnetization dynamics is derived, and spin waves time evolution is studied. Finally, the demagnet
Externí odkaz:
http://arxiv.org/abs/2005.05742
Autor:
Hudl, Matthias, d'Aquino, Massimiliano, Pancaldi, Matteo, Yang, See-Hun, Samant, Mahesh G., Parkin, Stuart S. P., Dürr, Hermann A., Serpico, Claudio, Hoffmann, Matthias C., Bonetti, Stefano
Publikováno v:
Phys. Rev. Lett. 123, 197204 (2019)
We present a comprehensive experimental and numerical study of magnetization dynamics triggered in a thin metallic film by single-cycle terahertz pulses of $\sim20$ MV/m electric field amplitude and $\sim1$ ps duration. The experimental dynamics is p
Externí odkaz:
http://arxiv.org/abs/1903.08395
Autor:
Polley, Debanjan, Pancaldi, Matteo, Hudl, Matthias, Vavassori, Paolo, Urazhdin, Sergei, Bonetti, Stefano
We study THz-driven spin dynamics in thin CoPt films with perpendicular magnetic anisotropy. Femtosecond magneto-optical Kerr effect measurements show that demagnetization amplitude of about $1\%$ can be achieved with a peak THz electric field of $30
Externí odkaz:
http://arxiv.org/abs/1711.01234
Autor:
Hudl, Matthias
This thesis concerns and combines the results of experimental studies of magnetocaloric, multiferroic and spin-glass materials, using SQUID magnetometry as the main characteriza-tion technique. The magnetocaloric effect offers an interesting new tech
Externí odkaz:
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-168986
Autor:
Tolédano, Pierre, Carolus, Vera, Hudl, Matthias, Lottermoser, Thomas, Khalyavin, Dmitry D., Ivanov, Sergey A., Fiebig, Manfred
A theoretical description of the sequence of magnetic phases in Co3TeO6 is presented. The strongly first-order character of the transition to the commensurate multiferroic ground state, induced by coupled order parameters corresponding to different w
Externí odkaz:
http://arxiv.org/abs/1203.0170
Autor:
Höglin, Viktor, Hudl, Matthias, Sahlberg, Martin, Nordblad, Per, Beran, Premysl, Andersson, Yvonne
The crystal and magnetic structure of the magnetocaloric compound FeMnP0.5Si0.5 have been studied by means of neutron and X-ray powder diffraction. Single phase samples of nominal composition FeMnP0.5Si0.5 have been prepared by the drop synthesis met
Externí odkaz:
http://arxiv.org/abs/1105.1942
Autor:
Hudl, Matthias, Häggström, Lennart, Delczeg-Czirjak, Erna-Krisztina, Höglin, Viktor, Sahlberg, Martin, Vitos, Levente, Eriksson, Olle, Nordblad, Per, Andersson, Yvonne
Publikováno v:
Appl. Phys. Lett. 99, 152502 (2011)
The compound FeMnP$_{0.50}$Si$_{0.50}$ has been studied by magnetic measurements, M\"ossbauer spectroscopy and electronic structure and total energy calculations. An unexpected high magnetic hyperfine field for Fe atoms located at the tetrahedral Me(
Externí odkaz:
http://arxiv.org/abs/1102.0636
Autor:
Hudl, Matthias, Nordblad, Per, Björkman, Torbjörn, Eriksson, Olle, Häggström, Lennart, Vitos, Levente, Sahlberg, Martin, Andersson, Yvonne
Publikováno v:
Phys. Rev. B 83, 134420 (2011)
We report on the synthesis and structural characterization of the magnetocaloric FeMnP$_{0.75}$Si$_{0.25}$ compound. Two types of samples (as quenched and annealed) were synthesized and characterized structurally and magnetically. We have found that
Externí odkaz:
http://arxiv.org/abs/0904.2256
Autor:
Zimmer, Anja, Nawrodt, Ronny, Heinert, Daniel, Schwarz, Christian, Hudl, Matthias, Koettig, Torsten, Vodel, Wolfgang, Tünnermann, Andreas, Seidel, Paul
Mechanical losses of crystalline silicon and calcium fluoride have been analyzed in the temperature range from 5 to 300 K by our novel mechanical spectroscopy method, cryogenic resonant acoustic spectroscopy of bulk materials (CRA spectrocopy). The f
Externí odkaz:
http://arxiv.org/abs/0709.2124
Autor:
Heinert, Daniel, Zimmer, Anja, Nawrodt, Ronny, Koettig, Torsten, Schwarz, Christian, Hudl, Matthias, Vodel, Wolfgang, Tünnermann, Andreas, Seidel, Paul
Publikováno v:
J.Phys.Conf.Ser.92:012183,2007
Fundamental mechanical loss mechanisms exist even in very pure materials, for instance, due to the interactions of excited acoustic waves with thermal phonons. A reduction of these losses in a certain frequency range is desired in high precision inst
Externí odkaz:
http://arxiv.org/abs/0709.2093