Role of electron correlation effects in ?-Pu and "115"-Pu-based unconventional superconductors

Result code in IS VaVaI

RIV/68378271:_____/14:00441298 - isvavai.cz

Result on the web

http://dx.doi.org/10.1016/j.crhy.2014.06.006

DOI - Digital Object Identifier

10.1016/j.crhy.2014.06.006

Result language

angličtina

Original language name

Role of electron correlation effects in ?-Pu and "115"-Pu-based unconventional superconductors

Original language description

Electronic structure calculations combining the local density approximation with the exact diagonalization of the Anderson impurity model show intermediate-valence ground state and delocalization of the Pu atom 5f-shell in PuCoGa5 and in ?-Pu. The localmagnetic moment is compensated by a moment formed in the surrounding cloud of conduction electrons. For PuCoGa5 and ?-Pu the compensation is complete and the ground state of the Anderson impurity model is a singlet. This can be important for analyses ofthe superconducting pairing mechanism in PuCoGa5. It is likely that in PuCoGa5 unconventional d-wave superconductivity is mediated by the 5f-states valence fluctuations, rather than by antiferromagnetic fluctuations.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

GAP204/10/0330: Nanostructured actinide-based materials: Theory and experiment

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Comptes Rendus Physique

ISSN

1631-0705

e-ISSN

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Volume of the periodical

15

Issue of the periodical within the volume

7

Country of publishing house

FR - FRANCE

Number of pages

8

Pages from-to

640-647

UT code for WoS article

000342879600010

EID of the result in the Scopus database

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