Zobrazeno 1 - 10
of 313
pro vyhledávání: '"P, Koskelo"'
Autor:
Koskelo, EliseAnne C., Mukherjee, Paromita, Liu, Cheng, Hamilton, Alice C. Sackville, Ong, Harapan S., Zhitomirsky, M. E., Castelnovo, Claudio, Dutton, Siân E.
As materials with suppressed ordering temperatures and enhanced ground state entropies, frustrated magnetic oxides are ideal candidates for cryogenic magnetocaloric refrigeration. While previous materials design has focused on tuning the magnetic mom
Externí odkaz:
http://arxiv.org/abs/2303.01773
Excitonic effects in metals are commonly supposed to be weak, because the Coulomb interaction is strongly screened. We investigate the low-density regime of the homogeneous electron gas, where low-energy collective excitations and ghost modes were an
Externí odkaz:
http://arxiv.org/abs/2301.00474
Autor:
Dawa Seo, Eric M. Heatwole, Trevor A. Feagin, Ian D. Lopez-Pulliam, Darby J. Luscher, Aaron Koskelo, Mack Kenamond, Christopher Rousculp, Christopher Ticknor, Christina Scovel, Nitin P. Daphalapurkar
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract This study conducted integrated experiments and computational modeling to investigate the speeds of a developing shock within granular salt and analyzed the effect of various impact velocities up to 245 m/s. Experiments were conducted on tab
Externí odkaz:
https://doaj.org/article/32359da519794ceea181975839fca762
By introducing electron screening in the extended Koopmans' theorem we correctly describe the band gap opening in weakly as well as strongly correlated systems. We show this by applying our method to bulk LiH, Si, and paramagnetic as well as antiferr
Externí odkaz:
http://arxiv.org/abs/2209.00933
Frustrated lanthanide oxides with dense magnetic lattices are of fundamental interest for their potential in cryogenic refrigeration due to a large ground state entropy and suppressed ordering temperatures, but can often be limited by short-range cor
Externí odkaz:
http://arxiv.org/abs/2203.08214
In this work we get insight into the impact of reduced density matrix functionals on the quality of removal/addition energies obtained using the Extended Koopmans' Theorem (EKT). Within reduced density matrix functional theory (RDMFT) the EKT approac
Externí odkaz:
http://arxiv.org/abs/2202.04946
Autor:
Mastripolito, Benjamin, Koskelo, Nicholas, Weatherred, Dylan, Pimentel, David A., Sheppard, Daniel, Graham, Anna Pietarila, Monroe, Laura, Robey, Robert
Publikováno v:
J. Comput. Inf. Sci. Eng. Apr 2022, 22(2)
Applications often require a fast, single-threaded search algorithm over sorted data, typical in table-lookup operations. We explore various search algorithms for a large number of search candidates over a relatively small array of logarithmically-di
Externí odkaz:
http://arxiv.org/abs/2112.03229
The Extended Koopman's Theorem (EKT) provides a straightforward way to compute charged excitations from any level of theory. In this work we make the link with the many-body effective energy theory (MEET) that we derived to calculate the spectral fun
Externí odkaz:
http://arxiv.org/abs/2108.06534
Photoemission spectrum in paramagnetic FeO under pressure: towards an \textit{ab-initio} description
Publikováno v:
Phys. Rev. Research 3, 013172 (2021)
In this work we provide an exhaustive study of the photemission spectrum of paramagnetic FeO under pressure using a refined version of our recently derived many-body effective energy theory (MEET). We show that, within a nonmagnetic description of th
Externí odkaz:
http://arxiv.org/abs/2002.11198
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