Zobrazeno 1 - 10
of 763
pro vyhledávání: '"George, Thomas F."'
Autor:
Zhang, G. P., Liu, Y. Q., Si, M. S., Allbritton, Nicholas, Bai, Y. H., Hübner, Wolfgang, George, Thomas F.
All-optical spin switching (AOS) is a new phenomenon found in a small group of magnetic media, where a single laser pulse can switch spins from one direction to another, without assistance of a magnetic field, on a time scale much shorter than existi
Externí odkaz:
http://arxiv.org/abs/2406.11099
Publikováno v:
J. Phys.: Condens. Matter Vol.34, page 375802 (2022)
Microscopic coupling between the electron spin and the lattice vibration is responsible for an array of exotic properties from morphic effects in simple magnets to magnetodielectric coupling in multiferroic spinels and hematites. Traditionally, a sin
Externí odkaz:
http://arxiv.org/abs/2207.10450
Publikováno v:
Physical Review B 105, 054431 (2022)
All-optical spin switching (AOS) represents a new frontier in magnetic storage technology -- spin manipulation without a magnetic field, -- but its underlying working principle is not well understood. Many AOS ferrimagnets such as GdFeCo are amorphou
Externí odkaz:
http://arxiv.org/abs/2207.10443
Publikováno v:
Physical Review B Vol. 104, L100302 (2021)
Lattice vibration in solids may carry angular momentum. But unlike the intrinsic spin of electrons, the lattice vibration is rarely rotational. To induce angular momentum, one needs to find a material that can accommodate a twisted normal mode, two o
Externí odkaz:
http://arxiv.org/abs/2109.11055
Spin and orbital angular momenta are two intrinsic properties of an electron and are responsible for the physics of a solid. How the spin and orbital evolve with respect to each other on several hundred femtoseconds is largely unknown, but it is at t
Externí odkaz:
http://arxiv.org/abs/2106.12679
Laser-induced ultrafast demagnetization has puzzled researchers around the world for over two decades. Intrinsic complexity in electronic, magnetic, and phononic subsystems is difficult to understand microscopically. So far it is not possible to expl
Externí odkaz:
http://arxiv.org/abs/2103.00040
Autor:
Fedorov, Eduard G., Zhukov, Alexander V., Bouffanais, Roland, Konobeeva, Natalia N., Boroznina, Evgeniya V., Malomed, Boris A., Leblond, Hervé, Mihalache, Dumitru, Belonenko, Mikhail B., Rosanov, Nikolay N., George, Thomas F.
Publikováno v:
Physical Review B 103, no. 8 (2021): 085111
We present a study of the propagation of three-dimensional (3D) bipolar electromagnetic ultrashort pulses in an inhomogeneous array of semiconductor carbon nanotubes (CNTs) in the presence of a control high-frequency (HF) electric field. The inhomoge
Externí odkaz:
http://arxiv.org/abs/2101.10212
Interest in all-optical spin switching (AOS) is growing rapidly. The recent discovery of AOS in Mn$_2$RuGa provides a much needed clean case of crystalline ferrimagnets for theoretical simulations. Here, we attempt to simulate it using the state-of-t
Externí odkaz:
http://arxiv.org/abs/2011.02001
Publikováno v:
J. Appl. Phys. 126, 103906 (2019)
Laser-induced femtosecond demagnetization, femtomagnetism, offers a potential route to develop faster magnetic storage devices. It is generally believed that the traditional spin-wave theory, which is developed for thermally driven slow demagnetizati
Externí odkaz:
http://arxiv.org/abs/1912.01736
Autor:
Fedorov, Eduard G., Zhukov, Alexander V., Bouffanais, Roland, Malomed, Boris A., Leblond, Hervé, Mihalache, Dumitru, Rosanov, Nikolay N., Belonenko, Mikhail B., George, Thomas F.
Publikováno v:
Opt. Exp., (27), 27592, 2019
We study the propagation of three-dimensional bipolar ultrashort electromagnetic pulses in an array of semiconductor carbon nanotubes at times much longer than the pulse duration, yet still shorter than the relaxation time in the system. The interact
Externí odkaz:
http://arxiv.org/abs/1909.00118