Zobrazeno 1 - 10
of 174
pro vyhledávání: '"Battiato, M."'
Publikováno v:
Phys. Rev. B 103, 205141 (2021)
We compute scattering rates for electrons in the two-dimensional Hubbard model for a one-orbital metal and a two-orbital band insulator by means of the Boltzmann scattering equation (BSE) and dynamical mean-field theory (DMFT). As an intermediate met
Externí odkaz:
http://arxiv.org/abs/2012.11257
Publikováno v:
Phys. Rev. B 98, 115132 (2018)
Ultrafast dynamics in three-dimensional topological insulators (TIs) opens new routes for increasing the speed of information transport up to frequencies thousand times faster than in modern electronics. However, up to date, disentangling the exact c
Externí odkaz:
http://arxiv.org/abs/1809.08156
Autor:
Battiato, M., Minar, J., Wang, W., Ndiaye, W., Richter, M. C., Heckmann, O., Mariot, J. -M., Parmigiani, F., Hricovini, K., Cacho, C.
Publikováno v:
Phys. Rev. Lett. 121, 077205 (2018)
Femtosecond laser excitations in half-metal (HM) compounds are theoretically predicted to induce an exotic picosecond spin dynamics. In particular, conversely to what is observed in conventional metals and semiconductors, the thermalization process i
Externí odkaz:
http://arxiv.org/abs/1802.10356
Autor:
Sánchez-Barriga, J., Battiato, M., Golias, E., Varykhalov, A., Yashina, L. V., Kornilov, O., Rader, O.
Publikováno v:
Appl. Phys. Lett. 110, 141605 (2017)
Using time- and angle-resolved photoemission, we investigate the ultrafast response of excited electrons in the ternary topological insulator (Bi$_{1 x}$Sb$_{x}$)$_2$Te$_3$ to fs-infrared pulses. We demonstrate that at the critical concentration $x$=
Externí odkaz:
http://arxiv.org/abs/1705.07078
Autor:
Sánchez-Barriga, J., Battiato, M., Krivenkov, M., Golias, E., Varykhalov, A., Romualdi, A., Yashina, L. V., Minár, J., Kornilov, O., Ebert, H., Held, K., Braun, J.
Publikováno v:
Phys. Rev. B 95, 125405 (2017)
Using time-, spin- and angle-resolved photoemission, we investigate the ultrafast spin dynamics of hot electrons on the surface of the topological insulator Bi$_2$Te$_3$ following optical excitation by fs-infrared pulses. We observe two surface-reson
Externí odkaz:
http://arxiv.org/abs/1705.07071
Publikováno v:
Phys. Rev. B 95, 235137 (2017)
The phenomenological textbook equations for the charge and heat transport are extensively used in a number of fields ranging from semiconductor devices to thermoelectricity. We provide a rigorous derivation of transport equations by solving the Boltz
Externí odkaz:
http://arxiv.org/abs/1606.05084
Autor:
Battiato, M., Held, K.
The injection of spin currents in semiconductors is one of the big challenges of spintronics. Motivated by the ultrafast demagnetisation and spin injection into metals, we propose an alternative femtosecond route based on the laser excitation of supe
Externí odkaz:
http://arxiv.org/abs/1604.05882
Publikováno v:
In Computer Physics Communications July 2021 264
Publikováno v:
In Computer Physics Communications June 2021 263
Publikováno v:
Phys. Rev. Lett. 114, 236603 (2015)
We identify the driving mechanism of the gigantic Seebeck coefficient in FeSb$_2$ as the phonon-drag effect associated with an in-gap density of states that we demonstrate to derive from excess iron. We accurately model electronic and thermoelectric
Externí odkaz:
http://arxiv.org/abs/1505.02946