Zobrazeno 1 - 10
of 80
pro vyhledávání: '"P. Chris Hammel"'
Autor:
Tao Liu, Camelia M. Selcu, Binbin Wang, Núria Bagués, Po-Kuan Wu, Timothy Q. Hartnett, Shuyu Cheng, Denis Pelekhov, Roland A. Bennett, Joseph Perry Corbett, Jacob R. Repicky, Brendan McCullian, P. Chris Hammel, Jay A. Gupta, Mohit Randeria, Prasanna V. Balachandran, David W. McComb, Roland K. Kawakami
Publikováno v:
Communications Physics, Vol 6, Iss 1, Pp 1-7 (2023)
Abstract Creating materials that do not exist in nature can lead to breakthroughs in science and technology. Magnetic skyrmions are topological excitations that have attracted great attention recently for their potential applications in low power, ul
Externí odkaz:
https://doaj.org/article/5382026ac9da4d9899f5a847071e08b5
Autor:
Brendan A. McCullian, Ahmed M. Thabt, Benjamin A. Gray, Alex L. Melendez, Michael S. Wolf, Vladimir L. Safonov, Denis V. Pelekhov, Vidya P. Bhallamudi, Michael R. Page, P. Chris Hammel
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
NV centres in diamond can be used to locally sense magnetic field fluctuations at the NV frequency. Here, the authors demonstrate sensing of magnetic field noise produced by non-NV resonant magnon modes, extending the frequency range of NV centre sen
Externí odkaz:
https://doaj.org/article/9d452813145448018eaa379924669ba4
Autor:
Aidan J. Lee, Jack T. Brangham, Yang Cheng, Shane P. White, William T. Ruane, Bryan D. Esser, David W. McComb, P. Chris Hammel, Fengyuan Yang
Publikováno v:
Nature Communications, Vol 8, Iss 1, Pp 1-6 (2017)
Owing to their conductivity, low-damping metallic ferromagnets are preferred to insulating ferromagnets in charge-based spintronic devices, but are not yet well developed. Here the authors achieve low magnetic damping in CoFe epitaxial films which is
Externí odkaz:
https://doaj.org/article/3517dbdf5fb14c2794d07dbc3b67a1c4
Enhancing Perpendicular Magnetic Anisotropy in Garnet Ferrimagnet by Interfacing with Few-Layer WTe2
Autor:
Guanzhong Wu, Dongying Wang, Nishchhal Verma, Rahul Rao, Yang Cheng, Side Guo, Guixin Cao, Kenji Watanabe, Takashi Taniguchi, Chun Ning Lau, Fengyuan Yang, Mohit Randeria, Marc Bockrath, P. Chris Hammel
Publikováno v:
Nano Letters. 22:1115-1121
Engineering magnetic anisotropy in a ferro- or ferrimagnetic (FM) thin film is crucial in spintronic device. One way to modify the magnetic anisotropy is through the surface of the FM thin film. Here, we report the emergence of a perpendicular magnet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52b7c87d5ffd6800b45fdf9aaac03557
https://doi.org/10.1021/acs.nanolett.1c04237
https://doi.org/10.1021/acs.nanolett.1c04237
Publikováno v:
Nano Letters. 21:10208-10214
We demonstrate a high-quality spin orbit torque nano-oscillator comprised of spin wave modes confined by the magnetic field by the strongly inhomogeneous dipole field of a nearby micromagnet. This approach enables variable spatial confinement and sys
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb27c7123d88a3a28a07231ab1ce3eb0
https://doi.org/10.1021/acs.nanolett.1c03075
https://doi.org/10.1021/acs.nanolett.1c03075
Autor:
Binbin Wang, Núria Bagués, Shekhar Das, Shuyu Cheng, Camelia Selcu, Denis V Pelekhov, P Chris Hammel, Mohit Randeria, Roland K Kawakami, David W McComb
Publikováno v:
Microscopy and Microanalysis. 28:2328-2330
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f21039f414073973bd33b16233b520d8
https://doi.org/10.1017/s1431927622008947
https://doi.org/10.1017/s1431927622008947
Autor:
Ahmed M. Thabt, Alex L. Melendez, P. Chris Hammel, Vladimir L. Safonov, Denis V. Pelekhov, Benjamin Gray, Vidya P. Bhallamudi, Michael R. Page, Michael S. Wolf, Brendan McCullian
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Nature Communications
Nature Communications
Development of sensitive local probes of magnon dynamics is essential to further understand the physical processes that govern magnon generation, propagation, scattering, and relaxation. Quantum spin sensors like the NV center in diamond have long sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::220469de9a29c67fef0aa1c74d7e1e07
http://link.springer.com/article/10.1038/s41467-020-19121-0
http://link.springer.com/article/10.1038/s41467-020-19121-0
Y3Fe5O12 is arguably the best magnetic material for magnonic quantum information science (QIS) because of its extremely low damping. We report ultralow damping at 2 K in epitaxial Y3Fe5O12 thin films grown on a diamagnetic Y3Sc2Ga3O12 substrate that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9926e17a56e989e3b997031c4951a3af
Publikováno v:
Journal of Magnetism and Magnetic Materials. 562:169795
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a14a98c1a4986995fe96eb0abbfd21ef
https://doi.org/10.1016/j.jmmm.2022.169795
https://doi.org/10.1016/j.jmmm.2022.169795
We investigate the physical origin of nonlinear damping due to mode coupling between several auto-oscillatory modes driven by spin-orbit torque in constricted Py/Pt heterostructures by examining the dependence of auto-oscillation on temperature and a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74a7ea189cce0549d62de3b7ce4eb2af