Record Details

Title:
Insight into the spin state at the surface of ${\mathrm{LaCoO}}_{3}$ revealed by photoemission electron microscopy
Affiliation(s):
EuXFEL staff, Other
Author group:
Instrument SCS
Theory
Topic:
Scientific area:
Abstract:
The evolution of the spin transition in ${\mathrm{LaCoO}}_{3}$ has been investigated with photoemission electron microscopy (PEEM) as a function of temperature. The investigated temperature range spanned from a predominantly low spin configuration (125 K) to the proposed percolation limit for metallization (413 K). The data show that the spin configuration exhibits an inhomogeneous spatial distribution that is very sensitive to the surface preparation method. In the region of the semiconductor-to-metal transition (300 to 450 K), the spatial contrast is continuously reduced, indicating a smooth transition without domain percolation. These observations support a new interpretation of the temperature evolution of the system that is in agreement with current theoretical understanding of the spin transition.
Imprint:
2016
Journal Information:
Physical Review B, 93, 155137 (2016)
Related external records:
Language(s):
English
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