Search Results - "Carva, K."

Theory of laser-induced ultrafast superdiffusive spin transport in layered heterostructures by Battiato, M., Carva, K., Oppeneer, P. M.

“…Femtosecond laser excitation of a ferromagnetic material creates energetic spin-polarized electrons that have anomalous transport characteristics. We develop a…”
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Superdiffusive spin transport as a mechanism of ultrafast demagnetization by Battiato, M, Carva, K, Oppeneer, P M

“…We propose a semiclassical model for femtosecond laser-induced demagnetization due to spin-polarized excited electron diffusion in the superdiffusive regime…”
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Disparate ultrafast dynamics of itinerant and localized magnetic moments in gadolinium metal by Frietsch, B., Bowlan, J., Carley, R., Teichmann, M., Wienholdt, S., Hinzke, D., Nowak, U., Carva, K., Oppeneer, P. M., Weinelt, M.

“…The Heisenberg–Dirac intra-atomic exchange coupling is responsible for the formation of the atomic spin moment and thus the strongest interaction in magnetism…”
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Ab Initio investigation of the Elliott-Yafet electron-phonon mechanism in laser-induced ultrafast demagnetization by Carva, K, Battiato, M, Oppeneer, P M

“…The spin-flip (SF) Eliashberg function is calculated from first principles for ferromagnetic Ni to accurately establish the contribution of Elliott-Yafet…”
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Beyond a phenomenological description of magnetostriction by Reid, A. H., Shen, X., Maldonado, P., Chase, T., Jal, E., Granitzka, P. W., Carva, K., Li, R. K., Li, J., Wu, L., Vecchione, T., Liu, T., Chen, Z., Higley, D. J., Hartmann, N., Coffee, R., Wu, J., Dakovski, G. L., Schlotter, W. F., Ohldag, H., Takahashi, Y. K., Mehta, V., Hellwig, O., Fry, A., Zhu, Y., Cao, J., Fullerton, E. E., Stöhr, J., Oppeneer, P. M., Wang, X. J., Dürr, H. A.

“…Magnetostriction, the strain induced by a change in magnetization, is a universal effect in magnetic materials. Owing to the difficulty in unraveling its…”
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Ab initio theory of electron-phonon mediated ultrafast spin relaxation of laser-excited hot electrons in transition-metal ferromagnets by Carva, K., Battiato, M., Legut, D., Oppeneer, P. M.

“…We report a computational theoretical investigation of electron spin-flip scattering induced by the electron-phonon interaction in the transition-metal…”
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Superdiffusive Spin Transport as a Mechanism of Ultrafast Demagnetization by Battiato, M., Carva, K., Oppeneer, P. M.

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Tailoring femtosecond hot-electron pulses for ultrafast spin manipulation by Bergeard, N., Hehn, M., Carva, K., Baláž, P., Mangin, S., Malinowski, G.

“…We have measured the hot-electron-induced demagnetization of a [Co/Pt]2 multilayer in M(x nm)/Cu(100 nm)/[Co(0.6 nm)/Pt(1.1 nm)]2 samples depending on the…”
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Multiscale modeling of ultrafast element-specific magnetization dynamics of ferromagnetic alloys by Hinzke, D., Atxitia, U., Carva, K., Nieves, P., Chubykalo-Fesenko, O., Oppeneer, P. M., Nowak, U.

“…A hierarchical multiscale approach to model the magnetization dynamics of ferromagnetic random alloys is presented. First-principles calculations of the…”
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The role of ultrafast magnon generation in the magnetization dynamics of rare-earth metals by Frietsch, B., Donges, A., Carley, R., Teichmann, M., Bowlan, J., Döbrich, K., Carva, K., Legut, D., Oppeneer, P. M., Nowak, U., Weinelt, M.

“…4f spin to phonon coupling is crucial for ultrafast spin-wave generation and magnetization dynamics in rare-earth metals. Ultrafast demagnetization of…”
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Tetragonal CuMnAs alloy: Role of defects by Máca, F., Kudrnovský, J., Baláž, P., Drchal, V., Carva, K., Turek, I.

“…•The CuMnAs alloy with tetragonal structure is a promising material for the antiferromagnetic spintronics.•The resistivity measurements indicate the presence…”
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Influence of laser-excited electron distributions on the X-ray magnetic circular dichroism spectra: Implications for femtosecond demagnetization in Ni by Carva, K, Legut, D, Oppeneer, P. M

“…In pump-probe experiments an intensive laser pulse creates non-equilibrium excited-electron distributions in the first few hundred femtoseconds after the…”
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Multiphase superconductivity at the interface between ultrathin FeTe islands and Bi2Te3 by Tkáč, V., Vorobiov, S., Baloh, P., Vondráček, M., Springholz, G., Carva, K., Szabó, P., Hofmann, Ph, Honolka, J.

“…FeTe monolayer islands situated on a topological insulator Bi 2 Te 3 (0001) surface were recently reported to exhibit the opening of an energy gap below…”
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Disordered magnetic multilayers: Electron transport within the coherent potential approximation by Carva, K., Turek, I., Kudrnovský, J., Bengone, O.

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Generation mechanism of terahertz coherent acoustic phonons in Fe by Henighan, T., Trigo, M., Bonetti, S., Granitzka, P., Higley, D., Chen, Z., Jiang, M., Kukreja, R., Gray, A., Reid, A., Jal, E., Hoffmann, M., Kozina, M., Song, S., Chollet, M., Zhu, D., Xu, P., Jeong, J., Carva, K., Maldonado, P., Oppeneer, P., Samant, M., Parkin, S., Reis, D., Dürr, H.

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Influence of an Anomalous Temperature Dependence of the Phase Coherence Length on the Conductivity of Magnetic Topological Insulators by Tkáč, V, Výborný, K, Komanický, V, Warmuth, J, Michiardi, M, Ngankeu, A S, Vondráček, M, Tarasenko, R, Vališka, M, Stetsovych, V, Carva, K, Garate, I, Bianchi, M, Wiebe, J, Holý, V, Hofmann, Ph, Springholz, G, Sechovský, V, Honolka, J

“…Magnetotransport constitutes a useful probe to understand the interplay between electronic band topology and magnetism in spintronic devices. A recent theory…”
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Oscillatory exchange coupling and strong direct tunnelling with AgCl based heterojunctions by Vlaic, P., Burzo, E., Carva, K.

“…•Structural and electronic properties of Fe/AgCl/Fe (001) junctions are studied.•Total energy calculations show that Fe/AgCl/Fe (001) heterostructures are…”
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Impact of Fe/NaCl (001) interface structure on electronic, magnetic and spin-polarized transport properties of Fe/NaCl/Fe (001) heterojunctions: An ab initio study by Vlaic, P., Burzo, E., Carva, K.

“…•Structural and electronic properties of Fe/NaCl/Fe (001) junctions are studied.•Several Fe/NaCl (001) c(2×2) interfaces are considered.•Resonant tunnelling…”
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Publisher Correction: Beyond a phenomenological description of magnetostriction by Reid, A. H., Shen, X., Maldonado, P., Chase, T., Jal, E., Granitzka, P. W., Carva, K., Li, R. K., Li, J., Wu, L., Vecchione, T., Liu, T., Chen, Z., Higley, D. J., Hartmann, N., Coffee, R., Wu, J., Dakowski, G. L., Schlotter, W. F., Ohldag, H., Takahashi, Y. K., Mehta, V., Hellwig, O., Fry, A., Zhu, Y., Cao, J., Fullerton, E. E., Stöhr, J., Oppeneer, P. M., Wang, X. J., Dürr, H. A.

“…“The technical support from SLAC Accelerator Directorate, Technology Innovation Directorate, LCLS laser division and Test Facility Division is gratefully…”
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Landauer theory of ballistic torkances in noncollinear spin valves by Carva, K., Turek, I.

“…We present a theory of voltage-induced spin-transfer torques in ballistic noncollinear spin valves. The torkance on one ferromagnetic layer is expressed in…”
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