Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Tapia, Eduardo"'
Autor:
Mendive-Tapia, Eduardo, Planes, Antoni
We present a mean-field study of caloric effects driven by primary and secondary fields near tricritical points, which are fields thermodynamically conjugated to the main and secondary order parameters, respectively. General features, such as critica
Externí odkaz:
http://arxiv.org/abs/2406.04990
Autor:
Tapia, Eduardo Mendive, Patrick, Christopher E., Hickel, Tilmann, Neugebauer, Jörg, Staunton, Julie B.
Publikováno v:
Journal of Physics: Energy, 5, 034004 (2023)
La(Fe$_x$Si$_{1-x}$)$_{13}$ and derived quaternary compounds are well-known for their giant, tunable, magneto- and barocaloric responses around a first-order paramagnetic-ferromagnetic transition near room temperature with low hysteresis. Remarkably,
Externí odkaz:
http://arxiv.org/abs/2302.06484
Autor:
Seifahrt, Andreas, Bean, Jacob L., Kasper, David, Stürmer, Julian, Brady, Madison, Liu, Robert, Zechmeister, Mathias, Stefansson, Gudmundur, Montet, Ben, White, John, Tapia, Eduardo, Mocnik, Teo, Xu, Siyi, Schwab, Christian
Publikováno v:
Proceedings of the SPIE, Volume 12184, id. 121841G 15 pp. (2022)
MAROON-X is a fiber-fed, optical EPRV spectrograph at the 8-m Gemini North Telescope on Mauna Kea, Hawai'i. MAROON-X was commissioned as a visiting instrument in December 2019 and is in regular use since May 2020. Originally designed for RV observati
Externí odkaz:
http://arxiv.org/abs/2210.06563
We show from first-principles that barrel-shaped structures within the Fermi surface of the centrosymmetric intermetallic compounds GdRu$_2$Si$_2$ and Gd$_2$PdSi$_3$ give rise to Fermi surface nesting, which determines the strength and sign of quasi-
Externí odkaz:
http://arxiv.org/abs/2204.01430
Publikováno v:
Physical Review B 105, 064425 (2022)
We present a first-principles approach for the computation of the magnetic Gibbs free energy of materials using magnetically constrained supercell calculations. Our approach is based on an adiabatic approximation of slowly varying local moment orient
Externí odkaz:
http://arxiv.org/abs/2202.11492
Autor:
Mendive-Tapia, Eduardo, Dias, Manuel dos Santos, Grytsiuk, Sergii, Staunton, Julie B., Blügel, Stefan, Lounis, Samir
Publikováno v:
Phys. Rev. B 103, 024410 (2021)
B20-type compounds, such as MnSi and FeGe, host helimagnetic and skyrmion phases at the mesoscale, which are canonically explained by the combination of ferromagnetic isotropic interactions with weaker chiral Dzyaloshinskii-Moriya ones. Mysteriously,
Externí odkaz:
http://arxiv.org/abs/2011.06351
Publikováno v:
J. Appl. Phys. 127, 113903 (2020)
We describe magneto-, baro- and elastocaloric effects (MCEs, BCEs and eCEs) in materials which possess both discontinuous (first-order) and continuous (second-order) magnetic phase transitions. Our ab initio theory of the interacting electrons of mat
Externí odkaz:
http://arxiv.org/abs/2005.12670
Publikováno v:
Physical Review B 101, 174437 (2020)
Around discontinuous (first-order) magnetic phase transitions the strong caloric response of materials to the application of small fields is widely studied for the development of solid-state refrigeration. Typically strong magnetostructural coupling
Externí odkaz:
http://arxiv.org/abs/2005.12659
Publikováno v:
Phys. Rev. B 99, 144424 (2019)
We present an \textit{ab-initio} disordered local moment theory for the Gibbs free energy of a magnetic material. Two central objects are calculated: the lattice Fourier transform of the direct local moment - local moment correlation functions in the
Externí odkaz:
http://arxiv.org/abs/1812.08653