Zobrazeno 1 - 10
of 1 216
pro vyhledávání: '"Massidda S"'
Publikováno v:
Comptes Rendus Physique 17 (2016) 5
Phase diagrams play a primary role in the understanding of materials properties. For iron-based superconductors (Fe-SC), the correct definition of their phase diagrams is crucial because of the close interplay between their crystallo-chemical and mag
Externí odkaz:
http://arxiv.org/abs/1507.02406
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves 34, 437 (2013)
Electron Cyclotron Emission (ECE) of different frequencies originates at different locations in non-uniformly magnetized plasmas. For simultaneous observation of multiple ECE frequencies from the outside edge of a toroidal plasma confinement device (
Externí odkaz:
http://arxiv.org/abs/1410.3529
Publikováno v:
Phys. Rev. B 86, 014507 (2012)
We report a systematic and ab-initio electronic structure calculation of Ca0.75 M0.25 Fe2 As2 with M = Ca, Sr, Eu, La, Ce, Pr, Nd, Pm, Sm, Na, K, Rb. The recently reported experimentally observed structural trends in rare earths-doped CaFe2 As2 compo
Externí odkaz:
http://arxiv.org/abs/1406.6513
Publikováno v:
Eur. Phys. J. B (2013) 86: 338
In this work we study the effect of the rare earth element in iron oxypnictides of composition REFeAsO (RE=rare earth). On one hand we carry out Density Functional Theory calculations of the band structure, which evidence the multiband character of t
Externí odkaz:
http://arxiv.org/abs/1307.6352
Publikováno v:
Phys. Rev. B 87, 115148 (2013)
We report on an ab initio strategy based on Density Functional Theory to identify the muon sites. Two issues must be carefully addressed, muon delocalization about candidate interstitial sites and local structural relaxation of the atomic positions d
Externí odkaz:
http://arxiv.org/abs/1302.2031
We investigate the pressure phase diagram of FeTe, predicting structural and magnetic properties in the normal state at zero temperature within density functional theory (DFT). We carefully examined several possible different crystal structures over
Externí odkaz:
http://arxiv.org/abs/1301.5517
Autor:
Perucchi, A., Baldassarre, L., Marini, C., Postorino, P., Bernardini, F., Massidda, S., Lupi, S.
Publikováno v:
Phys Rev B 86, 035114 (2012)
We address the in-plane pressure-dependent electrodynamics of graphite through synchrotron based infrared spectroscopy and ab initio Density Functional Theory calculations. The Drude term remarkably increases upon pressure application, as a consequen
Externí odkaz:
http://arxiv.org/abs/1111.1126
Autor:
Sanna, A., Pittalis, S., Dewhurst, J. K., Monni, M., Sharma, S., Ummarino, G., Massidda, S., Gross, E. K. U.
We study the graphite intercalated compound CaC$_6$ by means of Eliashberg theory, focusing on the anisotropy properties. An analysis of the electron-phonon coupling is performed, and we define a minimal 6-band anisotropy structure. Comparing with Su
Externí odkaz:
http://arxiv.org/abs/1108.2800
Publikováno v:
New J. Phys. 14 (2012) 023020
We study the anisotropic in-plane optical conductivity of detwinned Ba(Fe1-xCox)2As2 single crystals for x=0, 2.5% and 4.5% in a broad energy range (3 meV-5 eV) across their structural and magnetic transitions. For temperatures below the Neel transit
Externí odkaz:
http://arxiv.org/abs/1107.0670