Zobrazeno 1 - 10
of 513
pro vyhledávání: '"P. Nádvornik"'
Autor:
Wohlrath, V., Sadeghi, Z., Kimák, J., Hovořáková, K., Kubaščík, P., Schmoranzerová, E., Nádvorník, L., Trojánek, F., Němec, P., Ostatnický, T.
We present a method for a precise determination of magnetic anisotropy and anisotropy of quadratic magneto-optical response of thin films of ferromagnetic and ferrimagnetic materials. The method is based on measurements of a magneto-optical response
Externí odkaz:
http://arxiv.org/abs/2409.20205
Autor:
Surynek, M., Zubac, J., Olejnik, K., Farkas, A., Krizek, F., Nadvornik, L., Kubascik, P., Trojanek, F., Campion, R. P., Novak, V., Jungwirth, T., Nemec, P.
Previous experiments in compensated magnets have demonstrated a potential for approaching the limit of fastest and least-dissipative operation of digital memory bits. However, the analog route has been virtually unexplored at (sub)ps time scales. In
Externí odkaz:
http://arxiv.org/abs/2401.17370
Autor:
Jechumtál, Jiří, Rouzegar, Reza, Gueckstock, Oliver, Denker, Christian, Hoppe, Wolfgang, Remy, Quentin, Seifert, Tom S., Kubaščík, Peter, Woltersdorf, Georg, Brouwer, Piet W., Münzenberg, Markus, Kampfrath, Tobias, Nádvorník, Lukáš
We study the spatiotemporal dynamics of ultrafast electron spin transport across nanometer-thick copper layers using broadband terahertz spectroscopy. Our analysis of temporal delays, broadening and attenuation of the spin-current pulse revealed ball
Externí odkaz:
http://arxiv.org/abs/2310.12082
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:
Kubaščík, Peter, Farkaš, Andrej, Olejník, Kamil, Troha, Tinkara, Hývl, Matěj, Krizek, Filip, Joshi, Deep C., Ostatnický, Tomáš, Jechumtál, Jiří, Schmoranzerová, Eva, Campion, Richard P., Zázvorka, Jakub, Novák, Vít, Kužel, Petr, Jungwirth, Tomáš, Němec, Petr, Nádvorník, Lukáš
Antiferromagnetic CuMnAs thin films have attracted attention since the discovery of the manipulation of their magnetic structure via electrical, optical, and terahertz pulses of electric fields, enabling convenient approaches to the switching between
Externí odkaz:
http://arxiv.org/abs/2303.15268
Autor:
Nádvorník, Lukáš, Gueckstock, Oliver, Braun, Lukas, Niu, Chengwang, Gräfe, Joachim, Richter, Gunther, Schütz, Gisela, Takagi, Hidenori, Seifert, Tom S., Kubaščík, Peter, Pandeya, Avanindra K., Anane, Abdelmadjid, Yang, Heejun, Bedoya-Pinto, Amilcar, Parkin, Stuart S. P., Wolf, Martin, Mokrousov, Yuriy, Nakamura, Hiroyuki, Kampfrath, Tobias
Transition-metal dichalcogenides (TMDCs) are an aspiring class of materials with unique electronic and optical properties and potential applications in spin-based electronics. Here, we use terahertz emission spectroscopy to study spin-to-charge curre
Externí odkaz:
http://arxiv.org/abs/2208.00846
Autor:
Gueckstock, Oliver, Seeger, Rafael L., Seifert, Tom S., Auffret, Stephane, Gambarelli, Serge, Kirchhof, Jan N., Bolotin, Kirill I., Baltz, Vincent, Kampfrath, Tobias, Nádvorník, Lukáš
Publikováno v:
Appl. Phys. Lett. 120, 062408 (2022)
Control over spin transport in antiferromagnetic systems is essential for future spintronic applications with operational speeds extending to ultrafast time scales. Here, we study the transition from the gigahertz (GHz) to terahertz (THz) regime of s
Externí odkaz:
http://arxiv.org/abs/2111.04191
Autor:
Jiménez-Cavero, Pilar, Gueckstock, Oliver, Nádvorník, Lukáš, Lucas, Irene, Seifert, Tom S., Wolf, Martin, Rouzegar, Reza, Brouwer, Piet W., Becker, Sven, Jakob, Gerhard, Kläui, Mathias, Guo, Chenyang, Wan, Caihua, Han, Xiufeng, Jin, Zuanming, Zhao, Hui, Wu, Di, Morellón, Luis, Kampfrath, Tobias
Publikováno v:
Phys. Rev. B 105, 184408 (2022)
Spin transport is crucial for future spintronic devices operating at bandwidths up to the terahertz (THz) range. In F|N thin-film stacks made of a ferro/ferrimagnetic layer F and a normal-metal layer N, spin transport is mediated by (1) spin-polarize
Externí odkaz:
http://arxiv.org/abs/2110.05462
Autor:
Heitz, J. J. F., Nádvorník, L., Balos, V., Behovits, Y., Chekhov, A. L., Seifert, T. S., Olejník, K., Kašpar, Z., Geishendorf, K., Novák, V., Campion, R. P., Wolf, M., Jungwirth, T., Kampfrath, T.
We show scalable and complete suppression of the recently reported terahertz-pulse-induced switching between different resistance states of antiferromagnetic CuMnAs thin films by ultrafast gating. The gating functionality is achieved by an optically
Externí odkaz:
http://arxiv.org/abs/2106.08828
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