Zobrazeno 1 - 10
of 16
pro vyhledávání: '"James Wingert"'
Critical slowing of the spin and charge density wave order in thin film Cr following photoexcitation
Autor:
Sheena K. K. Patel, Oleg Yu Gorobtsov, Devin Cela, Stjepan B. Hrkac, Nelson Hua, Rajasekhar Medapalli, Anatoly G. Shabalin, James Wingert, James M. Glownia, Diling Zhu, Matthieu Chollet, Oleg G. Shpyrko, Andrej Singer, Eric E. Fullerton
Publikováno v:
APL Materials, Vol 12, Iss 6, Pp 061111-061111-8 (2024)
We report on the evolution of the charge density wave (CDW) and spin density wave (SDW) orders of a chromium film following photoexcitation with an ultrafast optical laser pulse. The CDW is measured by ultrafast time-resolved x-ray diffraction of the
Externí odkaz:
https://doaj.org/article/5fa059c08bcb4ae79b8df12ada34fd6c
Autor:
Jiaruo Li, Oleg Yu. Gorobtsov, Sheena K. K. Patel, Nelson Hua, Benjamin Gregory, Anatoly G. Shabalin, Stjepan Hrkac, James Wingert, Devin Cela, James M. Glownia, Matthieu Chollet, Diling Zhu, Rajasekhar Medapalli, Eric E. Fullerton, Oleg G. Shpyrko, Andrej Singer
Publikováno v:
Communications Physics, Vol 5, Iss 1, Pp 1-6 (2022)
Charge and spin density waves describe periodic distortions to the electronic structure of a given system and ultrafast laser techniques can provide unique mechanistic insight into their underling physics. Here, the authors use femtosecond laser puls
Externí odkaz:
https://doaj.org/article/c2b7433999b640d0a7a775f86e214ede
Autor:
Sohini Manna, Jong Woo Kim, Marko V. Lubarda, James Wingert, Ross Harder, Fred Spada, Vitaliy Lomakin, Oleg Shpyrko, Eric E. Fullerton
Publikováno v:
AIP Advances, Vol 7, Iss 12, Pp 125025-125025-7 (2017)
We report on the interplay of magnetic properties and intrinsic strain in ferromagnetic nickel nanocubes with cubic anisotropy. Via coherent x-ray diffraction imaging we observed compressive stress at the bottom surface of these cubes. The nanocubes
Externí odkaz:
https://doaj.org/article/de188e519f724ef68010f1f0ae24c873
Autor:
Michael Kozina, Bridget M. Murphy, Andrej Singer, James M. Glownia, Olaf M. Magnussen, Eric E. Fullerton, Silke Nelson, Sheena Patel, Henrik T. Lemke, James Wingert, Kai Rossnagel, Oleg Shpyrko, Alessandra Romero, Matthieu J. Verstraete, Sven Festersen, V. Uhlíř, Diling Zhu, Roopali Kukreja
Publikováno v:
Physical review / B 102(4), 041101 (2020). doi:10.1103/PhysRevB.102.041101
Physical review / B covering condensed matter and materials physics 102(4), 041101 (2020). doi:10.1103/PhysRevB.102.041101
We report the results of an ultrafast, direct structural measurement of optically pumped phonons in a Cr thin film using u
We report the results of an ultrafast, direct structural measurement of optically pumped phonons in a Cr thin film using u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6161c3e1540164fb8b20c14ccac39fb3
https://doi.org/10.1103/physrevb.102.041101
https://doi.org/10.1103/physrevb.102.041101
Autor:
Juan Gabriel Ramírez, Oleg Shpyrko, Andrej Singer, Roopali Kukreja, Ilya Valmianski, Olesya Kovalchuk, Devin Cela, Marcin Sikorski, Martin V. Holt, Ivan K. Schuller, Nelson Hua, Matthieu Chollet, James M. Glownia, James Wingert
Publikováno v:
Physical Review Letters. 120
Here, we photoinduce and directly observe with x-ray scattering an ultrafast enhancement of the structural long-range order in the archetypal Mott system V_{2}O_{3}. Despite the ultrafast increase in crystal symmetry, the change of unit cell volume o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0dd69b641c017a7854e9faeb217092b
https://doi.org/10.1103/physrevlett.120.207601
https://doi.org/10.1103/physrevlett.120.207601
Autor:
Andrej, Singer, Juan Gabriel, Ramirez, Ilya, Valmianski, Devin, Cela, Nelson, Hua, Roopali, Kukreja, James, Wingert, Olesya, Kovalchuk, James M, Glownia, Marcin, Sikorski, Matthieu, Chollet, Martin, Holt, Ivan K, Schuller, Oleg G, Shpyrko
Publikováno v:
Physical review letters. 120(20)
Here, we photoinduce and directly observe with x-ray scattering an ultrafast enhancement of the structural long-range order in the archetypal Mott system V_{2}O_{3}. Despite the ultrafast increase in crystal symmetry, the change of unit cell volume o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b91cfeb68ed01ada480d75166cc1414c
https://pubmed.ncbi.nlm.nih.gov/29864371
https://pubmed.ncbi.nlm.nih.gov/29864371
Publikováno v:
Journal of Synchrotron Radiation. 22:1141-1146
The possibility of studying dynamics at time scales on the order of the pulse duration at synchrotron X-ray sources with present avalanche photodiode point detection technology is investigated, without adopting pump–probe techniques. It is found th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e16d96cfd784ac0fa9b9543bd5543cd
https://doi.org/10.1107/s1600577515013806
https://doi.org/10.1107/s1600577515013806
Publikováno v:
IEEE Transactions on Magnetics. 51:1-6
We report on the magnetic anisotropy (MA) and magnetoresistance (MR) properties of [Co ( ${t_{\rm Co}}$ )/Au ( ${t_{\rm Au}})] {^\theta _{N}}$ multilayers prepared by changing the incident angle of deposition, ${\theta }$ , thicknesses ${t_{\rm Co}}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00b90ca20457039424425540b0dc0d67
https://doi.org/10.1109/tmag.2014.2352932
https://doi.org/10.1109/tmag.2014.2352932
Autor:
Oleg Shpyrko, Jacob Stanley, Thomas Saerbeck, Ivan K. Schuller, James Wingert, James Wampler, J. Pereiro
Publikováno v:
Journal of Magnetism and Magnetic Materials. 346:161-165
A search for superconductivity in systems of CuCl/Si and CuCl2/Si leads to the observation of ferromagnetism with a Tc of 18 K in powder samples. The magnetism emerges when pure CuCl is exposed to humid air, while the observed magnetic moment depends
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc9110810da0112ac5490f0389d0e4f7
https://doi.org/10.1016/j.jmmm.2013.07.036
https://doi.org/10.1016/j.jmmm.2013.07.036
Autor:
Sheena Patel, Oleg Shpyrko, Michael Kozina, Kai Rossnagel, Henrik T. Lemke, Roopali Kukreja, Bridget M. Murphy, James Wingert, Eric E. Fullerton, James M. Glownia, Olaf M. Magnussen, Michael Bauer, Diling Zhu, Sven Festersen, V. Uhlíř, Silke Nelson, Andrej Singer
Publikováno v:
Physical review letters, vol 117, iss 5
Singer, A; Patel, SKK; Kukreja, R; Uhlíř, V; Wingert, J; Festersen, S; et al.(2016). Photoinduced Enhancement of the Charge Density Wave Amplitude. Physical Review Letters, 117(5). doi: 10.1103/PhysRevLett.117.056401. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/3tx6s7z5
Singer, A; Patel, SKK; Kukreja, R; Uhlíř, V; Wingert, J; Festersen, S; et al.(2016). Photoinduced Enhancement of the Charge Density Wave Amplitude. Physical Review Letters, 117(5). doi: 10.1103/PhysRevLett.117.056401. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/3tx6s7z5
Symmetry breaking and the emergence of order is one of the most fascinating phenomena in condensed matter physics and leads to a plethora of intriguing ground states such as in antiferromagnets, Mott insulators, superconductors, and density-wave syst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dc2ebb6d9d164835df2144e2e0bd540
https://doi.org/10.1103/physrevlett.117.056401
https://doi.org/10.1103/physrevlett.117.056401