Zobrazeno 1 - 10
of 317
pro vyhledávání: '"Münzenberg, M"'
Autor:
Jauk, T., Hampel, H., Walowski, J., Komatsu, K., Kredl, J., Harris-Lee, E. I., Dewhurst, J. K., Münzenberg, M., Shallcross, S., Sharma, S., Schultze, M.
Heat and disorder are opponents of magnetism. This fact, expressed in Curie's law established more than a century ago, holds even in the highly non-equilibrium interaction of ultra-intense laser pulses with magnetic matter. In contradiction to this,
Externí odkaz:
http://arxiv.org/abs/2405.12690
Autor:
Kohlmann, M., Vollroth, L., Jäckel, K., Hovorakova, K., Schmoranzerova, E., Carva, K., Hinzke, D., Nowak, U., Münzenberg, M., Walowski, J.
All-optical helicity-dependent magnetization switching (AO-HDS) is the quickest deterministic technique for data storage by solely using ultrashort laser pulses. Granular high data density magnetic storage media developed for heat-assisted magnetic r
Externí odkaz:
http://arxiv.org/abs/2401.18010
Autor:
Chekhov, A. L., Behovits, Y., Martens, U., Serrano, B. R., Wolf, M., Seifert, T. S., Muenzenberg, M., Kampfrath, T.
We demonstrate detection of broadband intense terahertz electromagnetic pulses by Zeeman-torque sampling (ZTS). Our approach is based on magneto-optic probing of the Zeeman torque the terahertz magnetic field exerts on the magnetization of a ferromag
Externí odkaz:
http://arxiv.org/abs/2306.09734
Autor:
Schumann, T., Kleinke, T., Braun, L., Meyer, N., Mussler, G., Kampmeier, J., Grützmacher, D., Schmoranzerova, E., Olejník, K., Reichlová, H., Heiliger, C., Denker, C., Walowski, J., Kampfrath, T., Münzenberg, M.
We study laser driven spin-current effects at ferromagnet/topological-insulator interfaces by two complementary experimental approaches. The DC photocurrent is studied in ferromagnet/topological-insulator bilayers with high spatial resolution. Dynami
Externí odkaz:
http://arxiv.org/abs/2202.01522
Autor:
Schmoranzerová, E., Kimák, J., Schlitz, R., Goennenwein, S. T. B., Kriegner, D., Reichlová, H., Šobáň, Z., Jakob, G., Guo, E. -J., Kläui, M., Münzenberg, M., Němec, P., Ostatnický, T.
All-optical ferromagnetic resonance (AO-FMR) is a powerful tool for local detection of micromagnetic parameters, such as magnetic anisotropy, Gilbert damping or spin stiffness. In this work we demonstrate that the AO-FMR method can be used in thin fi
Externí odkaz:
http://arxiv.org/abs/2111.00586
Autor:
Schmoranzerová, E., Ostatnický, T., Kimák, J., Kriegner, D., Reichlová, H., Schlitz, R., Baďura, A., Šobáň, Z., Münzenberg, M., Jakob, G., Guo, E. -J., Kläui, M., Němec, P.
We report on observation of a magneto-optical effect quadratic in magnetization (Cotton-Mouton effect) in 50 nm thick layer of Yttrium-Iron Garnet (YIG). By a combined theoretical and experimental approach, we managed to quantify both linear and quad
Externí odkaz:
http://arxiv.org/abs/2110.13679
Autor:
Chekhov, A. L., Behovits, Y., Heitz, J. J. F., Denker, C., Reiss, D. A., Wolf, M., Weinelt, M., Brouwer, P. W., Münzenberg, M., Kampfrath, T.
We study ultrafast magnetization quenching of ferromagnetic iron following excitation by an optical vs a terahertz pump pulse. While the optical pump (photon energy of 3.1 eV) induces a strongly nonthermal electron distribution, terahertz excitation
Externí odkaz:
http://arxiv.org/abs/2106.01967
Publikováno v:
Appl. Phys. Lett. 116, 172402 (2020)
Circular photogalvanic currents are a promising new approach for spin-optoelectronics. To date, such currents have only been induced in topological insulator flakes or extended films. It is not clear whether they can be generated in nanodevices. In t
Externí odkaz:
http://arxiv.org/abs/2001.05249
Autor:
Chang, C. L., Mieszczak, S., Zelent, M., Besse, V., Martens, U., Tamming, R. R., Janusonis, J., Graczyk, P., Münzenberg, M., Kłos, J. W., Tobey, R. I.
Publikováno v:
Phys. Rev. Applied 10, 064051, (2018)
Using spatial light interference of ultrafast laser pulses, we generate a lateral modulation in the magnetization profile of an otherwise uniformly magnetized film, whose magnetic excitation spectrum is monitored via the coherent and resonant interac
Externí odkaz:
http://arxiv.org/abs/1902.09186
Autor:
Schumann, T., Meyer, N., Mussler, G., Kampmeier, J., Grützmacher, D., Schmoranzerova, E., Braun, L., Kampfrath, T., Walowski, J., Münzenberg, M.
The theoretical prediction of topological insulators in 2007 triggered tremendous interest. They are of fundamental interest because of their topological twist in k-space, which comes along with unidirectional, spin-polarized surface-state currents,
Externí odkaz:
http://arxiv.org/abs/1810.12799