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Tunable Spin Correlated‐Plasmons Ranging from Infrared to Ultraviolet in Pr 0.6 Sr 0.4 Co 1− x Mn x O 3
Author(s) -
Chaudhuri Anindita,
Chanda Amit,
Chi Xiao,
Yu Xiaojiang,
Diao Caozheng,
Breese Mark B. H.,
Mahendiran Ramanathan,
Rusydi Andrivo
Publication year - 2021
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.202000257
Subject(s) - plasmon , materials science , excited state , cobaltite , spin (aerodynamics) , condensed matter physics , infrared , metal , atomic physics , physics , optoelectronics , optics , metallurgy , thermodynamics
Herein, new spin correlated‐plasmons in Pr 0.6 Sr 0.4 Co 1− x Mn x O 3 ( x = 0–0.4) that are tunable and stable at room temperature are demonstrated. Using advanced spectroscopic techniques, the charge, spin, and orbital interaction that triggers the spin correlated‐plasmons in spin‐polarized Co 4+ , O 2− , and Mn 4+ is identified. As a function of x , Co 4+ systematically changes the spin state of the spin correlated‐plasmons (from high, intermediate, to low spin), which also sequentially transforms the metallic cobaltite into a Mott insulator. Spin correlated‐plasmons in the IR range, being excited from Co 4+ , tend to dominate in the metallic phase of the cobaltites, whereas Mn 4+ and O 2− are the primary source for the spin correlated‐plasmons in the UV–vis ranges in the insulating phase.