Zobrazeno 1 - 10
of 344
pro vyhledávání: '"Karis, O"'
Autor:
Klewe, C., Shafer, P., Shoup, J. E., Kons, C., Pogoryelov, Y., Knut, R., Gray, B. A., Jeon, H. -M., Howe, B. M., Karis, O., Suzuki, Y., Arenholz, E., Arena, D. A., Emori, S.
Publikováno v:
Appl. Phys. Lett. 122, 132401 (2023)
Many technologically useful magnetic oxides are ferrimagnetic insulators, which consist of chemically distinct cations. Here, we examine the spin dynamics of different magnetic cations in ferrimagnetic NiZnAl-ferrite (Ni$_{0.65}$Zn$_{0.35}$Al$_{0.8}$
Externí odkaz:
http://arxiv.org/abs/2302.03100
Autor:
Gupta, R., Cosco, F., Malik, R. S., Chen, X., Saha, S., Ghosh, A., Pohlmann, T., Mardegan, J. R. L., Francoual, S., Stefanuik, R., Soderstrom, J., Sanyal, B., Karis, O., Svedlindh, P., Oppeneer, P. M., Knut, R.
Using element-specific measurements of the ultrafast demagnetization of Ru/Fe$_{65}$Co$_{35}$ heterostructures, we show that Ru can exhibit a significant magnetic contrast (3% asymmetry) resulting from ultrafast spin currents emanating from the demag
Externí odkaz:
http://arxiv.org/abs/2205.07974
Autor:
Vaskivskyi, O. Grånäs I., Wang, X., Thunström, P., Ghimire, S., Knut, R., Söderström, J., Kjellsson, L., Turenne, D., Engel, R. Y., Beye, M., Lu, J., Reid, A. H., Schlotter, W., Coslovich, G., Hoffmann, M., Kolesov, G., Schüßler-Langeheine, C., Styervoyedov, A., Tancogne-Dejean, N., Sentef, M. A., Reis, D. A., Rubio, A., Parkin, S. S. P., Karis, O., Nordgren, J., Rubensson, J. -E., Eriksson, O., Dürr, H. A.
A non-trivial balance between Coulomb repulsion and kinematic effects determines the electronic structure of correlated electron materials. The use electromagnetic fields strong enough to rival these native microscopic interactions allows us to study
Externí odkaz:
http://arxiv.org/abs/2008.11115
Autor:
Kvashnin, Y., VanGennep, D., Mito, M., Medvedev, S. A., Thiyagarajan, R., Karis, O., Vasiliev, A. N., Eriksson, O., Abdel-Hafiez, M.
Publikováno v:
Phys. Rev. Lett. 125, 186401 (2020)
The coexistence of charge density wave (CDW) and superconductivity in tantalum disulfide (2H-TaS$_2$) at ambient pressure, is boosted by applying hydrostatic pressures up to 30GPa, thereby inducing a typical dome-shaped superconducting phase. The amb
Externí odkaz:
http://arxiv.org/abs/2007.14813
Autor:
Malik, R. S., Delczeg-Czirjak, E. K., Thonig, D., Knut, R., Vaskivskyi, I., Gupta, R., Jana, S., Stefanuik, R., Kvashnin, Y. O., Husain, S., Kumar, A., Svedlindh, P., Söderström, J., Eriksson, O., Karis, O.
Publikováno v:
Phys. Rev. B 104, 100408 (2021)
We report on optically induced, ultrafast magnetization dynamics in the Heusler alloy $\mathrm{Co_{2}FeAl}$, probed by time-resolved magneto-optical Kerr effect. Experimental results are compared to results from electronic structure theory and atomis
Externí odkaz:
http://arxiv.org/abs/2002.12255
Autor:
Jana, S., Panda, S. K., Phuyal, D., Pal, B., Mukherjee, S., Dutta, A., Kumar, P. Anil, Hedlund, D., Schott, J., Thunstrom, P., Kvashnin, Y., Rensmo, H., Kamalakar, M. Venkata, Segre, Carlo. U., Svedlindh, P., Gunnarsson, K., Biermann, S., Eriksson, O., Karis, O., Sarma, D. D.
Tailoring transport properties of strongly correlated electron systems in a controlled fashion counts among the dreams of materials scientists. In copper oxides, varying the carrier concentration is a tool to obtain high-temperature superconducting p
Externí odkaz:
http://arxiv.org/abs/1810.10978
Autor:
Knut, R., Delczeg-Czirjak, E. K., Jana, S., Shaw, J. M., Nembach, H. T., Kvashnin, Y., Stefaniuk, R., Malik, R. S., Grychtol, P., Zusin, D., Gentry, C., Chimata, R., Pereiro, M., Söderström, J., Turgut, E., Ahlberg, M., Åkerman, J., Kapteyn, H. C., Murnane, M. M., Arena, D. A., Eriksson, O., Karis, O., Silva, T. J.
Ni$_{0.8}$Fe$_{0.2}$ (Py) and Py alloyed with Cu exhibit intriguing ultrafast demagnetization behavior, where the Ni magnetic moment shows a delayed response relative to the Fe, an effect which is strongly enhanced by Cu alloying. We have studied a b
Externí odkaz:
http://arxiv.org/abs/1810.10994
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Nguyen, T. N. Anh, Knut, R., Fallahi, V., Chung, S., Mohseni, S. M., Le, Q. Tuan, Karis, O., Peredkov, S., Dumas, R. K., Miller, Casey W., Akerman, J.
Publikováno v:
Phys. Rev. Applied 2, 044014 (2014)
We report on the magnetization depth profile of a hybrid exchange spring system in which a Co/Pd multilayer with perpendicular anisotropy is coupled to a CoFeB thin film with in-plane anisotropy. The competition between these two orthogonal anisotrop
Externí odkaz:
http://arxiv.org/abs/1312.0878
Autor:
Kadas, K., Andersson, M., Holmstrom, E., Wende, H., Karis, O., Urbonaite, S., Butorin, S. M., Nikitenko, S., Kvashnina, K. O., Jansson, U., Eriksson, O.
By means of theoretical modeling and experimental synthesis and characterization, we investigate the structural properties of amorphous Zr-Si-C. Two chemical compositions are selected, Zr0.31Si0.29C0.40 and Zr0.60Si0.33C0.07. The amorphous structures
Externí odkaz:
http://arxiv.org/abs/1203.5876