Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Sergei Urazhdin"'
Autor:
Robert Lemasters, Manoj Manjare, Ryan Freeman, Feng Wang, Luka Guy Pierce, Gordon Hua, Sergei Urazhdin, Hayk Harutyunyan
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-8 (2024)
Abstract Photoluminescence from spatially inhomogeneous plasmonic nanostructures exhibits fascinating wavelength-dependent nonlinear behaviors due to the intraband recombination of hot electrons excited into the conduction band of the metal. The prop
Externí odkaz:
https://doaj.org/article/848ab6f6add242088e70fcaf165fa6d9
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Nonlinear damping enhancement imposes strict limitations on the operation and efficiency of magnetic nano-devices. Here the authors show that nonlinear damping can be controlled by the ellipticity of magnetization precession, which provides a route f
Externí odkaz:
https://doaj.org/article/582812617e234ae9ab30cdebe08c7ba0
Autor:
Vladislav E. Demidov, Sergei Urazhdin, Ronghua Liu, Boris Divinskiy, Andrey Telegin, Sergej O. Demokritov
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-6 (2016)
Dynamical effects driven by pure spin currents in magnetic nanostructures have so far been limited to spatially confined excitations, limiting potential magnonic applications. Here, the authors demonstrate the generation of coherent propagating spin
Externí odkaz:
https://doaj.org/article/bc9fb954028e45abb3c569a16834fe55
Publikováno v:
Physical Review Materials. 7
We develop a two-orbital Hubbard model of electron correlations in ultrathin (111)-oriented fcc films of late transition metals such as Co and Ni. Our model indicates that the Mott-Hund's interaction results in ferromagnetic nearest-neighbor orbital
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82e70e3ec56aef8409c1c156f1659454
https://doi.org/10.1103/physrevmaterials.7.014404
https://doi.org/10.1103/physrevmaterials.7.014404
Publikováno v:
Physical Review B. 106
We show that the Bloch states in the conduction band of SrTiO$_3$ arise from the interplay between highly anisotropic hopping in sub-bands derived from the Ti $t_{2g}$ orbitals and spin-orbit coupling that mixes these orbitals. Because of the nearly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb75b92d72c5c3e497eec0bf40bc4c44
https://doi.org/10.1103/physrevb.106.224519
https://doi.org/10.1103/physrevb.106.224519
Autor:
Ryan Freeman, Robert Lemasters, Tomi Kalejaiye, Feng Wang, Guanxiong Chen, Jinjun Ding, Mingzhong Wu, Vladislav E. Demidov, Sergej O. Demokritov, Hayk Harutyunyan, Sergei Urazhdin
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033427 (2020)
Microfocus Brillouin light scattering is a powerful technique for the spectroscopic and spatial characterization of elementary excitations in materials. However, the small momentum of light limits the accessible excitations to the center of the Brill
Externí odkaz:
https://doaj.org/article/a89160322357494b833b8a5241945b51
Publikováno v:
Physical Review X, Vol 10, Iss 1, p 011064 (2020)
Sufficiently large electric current applied to metallic nanostructures can bring them far out of equilibrium, resulting in non-Ohmic behaviors characterized by current-dependent resistance. We experimentally demonstrate a linear dependence of resista
Externí odkaz:
https://doaj.org/article/d5eb76748d934a79937baa2ec2eb6128
Autor:
Laura Foglia, Lisa Randolph, Christian Gutt, Filippo Bencivenga, Alexei Maznev, Emanuele Pedersoli, Hendrik Rahmann, Antonio Caretta, Matteo Pancaldi, Stefano Bonetti, Dmitriy Ksenzov, Claudio Masciovecchio, R. Mincigrucci, Flavio Capotondi, Keith A. Nelson, Sergei Urazhdin, Marco Malvestuto, Vivek Unikandanunni
Publikováno v:
Nano Letters
We utilize coherent femtosecond extreme ultraviolet (EUV) pulses derived from a free electron laser (FEL) to generate transient periodic magnetization patterns with periods as short as 44 nm. Combining spatially periodic excitation with resonant prob
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4800c925ab97c3de15c5fb340547272d
https://doi.org/10.1021/acs.nanolett.0c05083
https://doi.org/10.1021/acs.nanolett.0c05083
Autor:
Amit Agrawal, Cheng Zhang, Robert Lemasters, Manoj Manjare, Henri J. Lezec, Junyeob Song, Hayk Harutyunyan, Wenqi Zhu, Sergei Urazhdin
Publikováno v:
ACS Photonics. 6:2600-2606
Ultrathin gold films are attractive for plasmonic and metamaterial devices, thanks to their useful optical and optoelectronic properties. However, deposition of ultrathin continuous Au films of a f...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0222e8ae4caba59ac26b229dacb21e9
https://doi.org/10.1021/acsphotonics.9b00907
https://doi.org/10.1021/acsphotonics.9b00907