Zobrazeno 1 - 10
of 968
pro vyhledávání: '"Woltersdorf G"'
Autor:
Del Giacco, A., Maspero, F., Levati, V., Vitali, M., Albisetti, E., Petti, D., Brambilla, L., Polewczyk, V., Vinai, G., Panaccione, G., Silvani, R., Madami, M., Tacchi, S., Dreyer, R., Lake, S. R., Woltersdorf, G., Schmidt, G., Bertacco, Riccardo
The fabrication and integration of high-quality structures of Yttrium Iron Garnet (YIG) is critical for magnonics.Films with excellent properties are obtained only on single crystal Gadolinium Gallium Garnet (GGG) substrates using high-temperature pr
Externí odkaz:
http://arxiv.org/abs/2402.14444
Autor:
Rouzegar, R., Wahada, M. A., Chekhov, A. L., Hoppe, W., Jechumtal, J., Nadvornik, L., Wolf, M., Seifert, T. S., Parkin, S. S. P., Woltersdorf, G., Brouwer, P. W., Kampfrath, T.
We study femtosecond spin currents through MgO tunneling barriers in CoFeB(2 nm)|MgO($d$)|Pt(2 nm) stacks by terahertz emission spectroscopy. To obtain transport information independent of extrinsic experimental factors, we determine the complex-valu
Externí odkaz:
http://arxiv.org/abs/2305.09074
Autor:
Brandt, L., Verba, R., Liebing, N., Ribow, M., Razdolski, I., Tyberkevych, V., Slavin, A., Woltersdorf, G., Melnikov, A.
We study the damping of perpendicular standing spin-waves (PSSWs) in ultrathin Fe films at frequencies up to 2.4 THz. The PSSWs are excited by optically generated ultrashort spin current pulses, and probed optically in the time domain. Analyzing the
Externí odkaz:
http://arxiv.org/abs/2107.12812
Autor:
Rouzegar, R., Brandt, L., Nadvornik, L., Reiss, D. A., Chekhov, A. L., Gueckstock, O., In, C., Wolf, M., Seifert, T. S., Brouwer, P. W., Woltersdorf, G., Kampfrath, T.
Laser-induced terahertz spin transport (TST) and ultrafast demagnetization (UDM) are central but so far disconnected phenomena in femtomagnetism and terahertz spintronics. Here, we use broadband terahertz emission spectroscopy to reliably measure bot
Externí odkaz:
http://arxiv.org/abs/2103.11710
We present a novel process that allows the transfer of monocrystalline yttrium-iron-garnet microstructures onto virtually any kind of substrate. The process is based on a recently developed method that allows the fabrication of freestanding monocryst
Externí odkaz:
http://arxiv.org/abs/2008.09390
Autor:
Alekhin, A., Razdolski, I., Berritta, M., Bürstel, D., Temnov, V., Diesing, D., Bovensiepen, U., Woltersdorf, G., Oppeneer, P. M., Melnikov, A.
We demonstrate a novel method for the excitation of sizable magneto-optical effects in Au by means of the laser-induced injection of hot spin-polarized electrons in Au/Fe/MgO(001) heterostructures. It is based on the energy- and spin-dependent electr
Externí odkaz:
http://arxiv.org/abs/1810.12237
Autor:
Heyroth, F., Hauser, C., Trempler, P., Geyer, P., Syrowatka, F., Dreyer, R., Ebbinghaus, S. G., Woltersdorf, G., Schmidt, G.
Publikováno v:
Phys. Rev. Applied 12, 054031 (2019)
Nano resonators in which mechanical vibrations and spin waves can be coupled are an intriguing concept that can be used in quantum information processing to transfer information between different states of excitation. Until now, the fabrication of fr
Externí odkaz:
http://arxiv.org/abs/1802.03176
Autor:
Seifert, T. S., Jaiswal, S., Barker, J., Weber, S. T., Razdolski, I., Cramer, J., Gueckstock, O., Maehrlein, S., Nadvornik, L., Watanabe, S., Ciccarelli, C., Melnikov, A., Jakob, G., Münzenberg, M., Goennenwein, S. T. B., Woltersdorf, G., Rethfeld, B., Brouwer, P. W., Wolf, M., Kläui, M., Kampfrath, T.
Understanding the transfer of spin angular momentum is essential in modern magnetism research. A model case is the generation of magnons in magnetic insulators by heating an adjacent metal film. Here, we reveal the initial steps of this spin Seebeck
Externí odkaz:
http://arxiv.org/abs/1709.00768
Publikováno v:
Scientific Reports 6, 34549 (2016)
The experimental existence and stability of the quantum criticality point of the two-channel Kondo (2CK) effect displaying exotic non-Fermi liquid physics has been buried in persistent confusion despite the intensive theoretical and experimental effo
Externí odkaz:
http://arxiv.org/abs/1605.04366
Autor:
Lange, C., Maag, T., Hohenleutner, M., Baierl, S., Schubert, O., Edwards, E., Bougeard, D., Woltersdorf, G., Huber, R.
Publikováno v:
Phys. Rev. Lett. 113, 227401 (2014)
Terahertz near fields of gold metamaterials resonant at a frequency of $0.88\,\rm THz$ allow us to enter an extreme limit of non-perturbative ultrafast THz electronics: Fields reaching a ponderomotive energy in the keV range are exploited to drive no
Externí odkaz:
http://arxiv.org/abs/1604.04107