Zobrazeno 1 - 10
of 124
pro vyhledávání: '"Arias, Tomas"'
Autor:
Niedzielski, Drake, Faeth, Brendan D., Goodge, Berit H., Sinha, Mekhola, McQueen, Tyrel M., Kourkoutis, Lena F., Arias, Tomás A.
Common belief is that the large band shifts observed in incommensurate misfit compounds, e.g. (LaSe)1.14(NbSe2)2, are due to interlayer charge transfer. In contrast, our analysis, based on both ARPES measurements and a specialized ab initio framework
Externí odkaz:
http://arxiv.org/abs/2407.05465
Autor:
Bundschu, Colin R., Ahmadi, Mahdi, Méndez-Valderrama, Juan F., Yang, Yao, Abruña, Héctor D., Arias, Tomás A.
Precious-metal-free spinel oxide electrocatalysts are promising candidates for catalyzing the oxygen reduction reaction (ORR) in alkaline fuel cells. In this theory-driven study, we use joint density-functional theory in tandem with supporting electr
Externí odkaz:
http://arxiv.org/abs/2310.14377
Autor:
Huang, Jason J., Yang, Yao, Weinstock, Daniel, Bundschu, Colin R., Ruff, Jacob P. C., Arias, Tomás A., Abruña, Héctor D., Singer, Andrej
Furthering the understanding of the catalytic mechanisms in the oxygen reduction reaction (ORR) is critical to advancing and enabling fuel cell technology. In this work, we use multimodal operando synchrotron X-ray diffraction (XRD) and resonant elas
Externí odkaz:
http://arxiv.org/abs/2307.05912
We introduce a fully ab initio theory for inelastic scattering of any atom from any surface exciting single phonons, and apply the theory to helium scattering from Nb(100). The key aspect making our approach general is a direct first-principles evalu
Externí odkaz:
http://arxiv.org/abs/2306.01892
Autor:
Sun, Zeming, Oseroff, Thomas, Baraissov, Zhaslan, Dare, Darrah K., Howard, Katrina, Francis, Benjamin, Hire, Ajinkya C., Sitaraman, Nathan, Arias, Tomas A., Transtrum, Mark K., Hennig, Richard, Thompson, Michael O., Muller, David A., Liepe, Matthias U.
Superconducting radio-frequency (SRF) resonators are critical components for particle accelerator applications, such as free-electron lasers, and for emerging technologies in quantum computing. Developing advanced materials and their deposition proce
Externí odkaz:
http://arxiv.org/abs/2302.14410
Autor:
Barron, Boris, Kinkhabwala, Yunus A., Hess, Chriss, Hall, Matthew, Cohen, Itai, Arias, Tomás A.
The traditional approach to the quantitative study of segregation is to employ indices that are selected by ``desirable properties''. Here, we detail how information theory underpins entropy-based indices and demonstrate how desirable properties can
Externí odkaz:
http://arxiv.org/abs/2212.06980
Autor:
Sitaraman, Nathan S., Sun, Zeming, Francis, Ben, Hire, Ajinkya C., Oseroff, Thomas, Baraissov, Zhaslan, Arias, Tomás A., Hennig, Richard, Liepe, Matthias U., Muller, David A., Transtrum, Mark K.
Niobium-zirconium (Nb-Zr) alloy is an old superconductor that is a promising new candidate for superconducting radio-frequency (SRF) cavity applications. Using density-functional and Eliashberg theories, we show that addition of Zr to a Nb surface in
Externí odkaz:
http://arxiv.org/abs/2208.10678
Autor:
Deyo, Sean, Kelley, Michelle, Sitaraman, Nathan, Oseroff, Thomas, Liarte, Danilo B., Arias, Tomas, Liepe, Matthias, Sethna, James P.
Publikováno v:
Phys. Rev. B 106, 104502 (2022)
Recent experiments on superconducting cavities have found that under large radio-frequency (RF) electromagnetic fields the quality factor can improve with increasing field amplitude, a so-called "anti-Q slope." Linear theories of dissipation break do
Externí odkaz:
http://arxiv.org/abs/2201.07747
Racial residential segregation is a defining and enduring feature of U.S. society, shaping inter-group relations, racial disparities in income and health, and access to high-quality public goods and services. The design of policies aimed at addressin
Externí odkaz:
http://arxiv.org/abs/2108.04084
Autor:
Chen, Yuchao, Kinkhabwala, Yunus A., Barron, Boris, Hall, Matthew, Arias, Tomas A., Cohen, Itai
Decisions regarding housing, transportation, and resource allocation would all benefit from accurate small-area population forecasts. While various tried-and-tested forecast methods exist at regional scales, developing an accurate neighborhood-scale
Externí odkaz:
http://arxiv.org/abs/2008.09663