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Elastic constants of incommensurate solid 4He from diffusion Monte Carlo simulations

Autor
Cazorla, C.; Lutsyshyn, Y.; Boronat, J.
Tipus d'activitat
Article en revista
Revista
Physical review B: condensed matter and materials physics
Data de publicació
2013-06-28
Volum
87
Número
21
Pàgina inicial
1
Pàgina final
5
DOI
https://doi.org/10.1103/PhysRevB.87.214522 Obrir en finestra nova
Projecte finançador
Advanced materials and NANOtechnologies for innovative electrical, ELECTronic and magnetoelectronic devices (CSD2007-00041)
Estudio fundamental y diseño computacional de óxidos multifuncionales nanoestructurados (MAT2010-18113)
Fluidos y sólidos cuánticos fuertamente correlacionados (FIS2011-25275)
GRUP DE SIMULACIO PER ORDINADOR EN MATERIA CONDENSADA
Repositori
http://hdl.handle.net/2117/20010 Obrir en finestra nova
URL
http://prb.aps.org/abstract/PRB/v87/i21/e214522 Obrir en finestra nova
Resum
We study the elastic properties of incommensurate solid 4He in the limit of zero temperature. Specifically, we calculate the pressure dependence of the five elastic constants (C11, C12, C13, C33, and C44), longitudinal and transversal speeds of sound, and the T=0 Debye temperature of incommensurate and commensurate hcp 4He using the diffusion Monte Carlo method. Our results show that under compression, the commensurate crystal is globally stiffer than the incommensurate, however at pressures clo...
Citació
Cazorla, C.; Lutsyshyn, Y.; Boronat, J. Elastic constants of incommensurate solid 4He from diffusion Monte Carlo simulations. "Physical review B: condensed matter and materials physics", 28 Juny 2013, vol. 87, núm. 21, p. 1-5.
Paraules clau
Mètode De Montecarlo
Grup de recerca
FIPACOM - First-principles approaches to condensed matter physics: quantum effects and complexity

Participants

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