Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session F44: URu2Si2 and Related Actinides/Lanthanides
11:15 AM–2:15 PM,
Tuesday, March 6, 2018
LACC
Room: 504
Sponsoring
Unit:
DCMP
Chair: John van Dyke, Iowa State U.
Abstract ID: BAPS.2018.MAR.F44.13
Abstract: F44.00013 : Orbital-dependent correlations in PuCoGa$_5$*
1:39 PM–1:51 PM
Presenter:
Walber Hugo De Brito
(Brookhaven National Laboratory)
Authors:
Walber Hugo De Brito
(Brookhaven National Laboratory)
Sangkook Choi
(Brookhaven National Laboratory)
Gabriel Kotliar
(Rutgers University)
$T_{c}$ = 18.5 K, which is the record transition temperature among the family of heavy fermion superconductors.
More recently, It has been conjectured [1] that there is a connection between superconductivity and orbital differentiation,
which is a key concept to understand the physics of ruthenates and iron-based superconductors.
In this study we investigate the orbital-dependence of correlations in PuCoGa$_5$ as a function of temperature. In particular,
we employed the combination of density functional theory (DFT) and dynamical mean field theory and the DFT+Gutzwiller$/$rotationally invariant slave boson method.
According to our calculations there is a strong tendency of the orbitals to differentiate in PuCoGa$_5$ at low temperatures.
In particular, both methods suggest that electronic correlations remove the Pu-5$f_{7/2}$ spectral weight from the Fermi level relative to DFT.
[1] L. de' Medici, Phys. Rev. Lett. 118, 167003 (2017).
*-Center for Computational Design of Functional Strongly Correlated Materials and Theoretical Spectroscopy (Brookhaven National Laboratory)
- U.S. DOE (Grant No. DE-FG02-99ER45761)
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.F44.13
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