Record Details

Title:
Laser-induced charge-disproportionated metallic state in ${\mathrm{LaCoO}}_{3}$
Affiliation(s):
EuXFEL staff
Author group:
Theory
Sample Environment
Management Board
Topic:
Scientific area:
Abstract:
Understanding the origin of the spin transition in ${\mathrm{LaCoO}}_{3}$ is one of the long-standing aims in condensed matter physics. Aside from its fundamental interest, a detailed description of this crossover will have a direct impact on the interpretation of the semiconductor-to-metal transition (SMT) and the properties of the high-temperature metallic phase in this compound, which has shown to have important applications in environmentally friendly energy production. To date, the spin transition has been investigated mainly as a function of temperature in thermal equilibrium. These results have hinted at dynamical effects. In this paper, we have investigated the SMT by means of pump-probe soft x-ray reflectivity experiments at the O $K$, Co $L$, and La $M$ edges and theoretical calculations within a DFT++ formalism. The results point towards a laser-induced metallization in which the optical transitions stabilize a metallic state with high-spin configuration and increased charge disproportionation
Imprint:
College Park, Md., APS, 2014
Journal Information:
Phys. Rev. B, 90, 23, 235128 (2014)
ISSN:
0163-1829
0556-2805
1095-3795
1098-0121
1550-235X
Related external records:
DOI: 10.1103/PhysRevB.90.235128
WOS: WOS:000346614800001
Language(s):
English
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