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Title: Tunable Spin Correlated‐Plasmons Ranging from Infrared to Ultraviolet in Pr0.6Sr0.4Co1−xMnxO3
Authors: Anindita Chaudhuri 
Amit Chanda 
Xiao Chi 
Xiaojiang Yu
Caozheng Diao 
Breese, M.B.H. 
Ramanathan Mahendiran 
Andrivo Rusydi 
Keywords: perovskite oxides
spin plasmons
strongly correlated materials
Issue Date: 23-Sep-2020
Publisher: WILEY
Citation: Anindita Chaudhuri, Amit Chanda, Xiao Chi, Xiaojiang Yu, Caozheng Diao, Breese, M.B.H., Ramanathan Mahendiran, Andrivo Rusydi (2020-09-23). Tunable Spin Correlated‐Plasmons Ranging from Infrared to Ultraviolet in Pr0.6Sr0.4Co1−xMnxO3. physica status solidi (RRL) – Rapid Research Letters 15 (2) : 2000257. ScholarBank@NUS Repository.
Abstract: Herein, new spin correlated‐plasmons in Pr0.6Sr0.4Co1−xMnxO3 (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 Co4+, O2−, and Mn4+ is identified. As a function of x, Co4+ 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 Co4+, tend to dominate in the metallic phase of the cobaltites, whereas Mn4+ and O2− are the primary source for the spin correlated‐plasmons in the UV–vis ranges in the insulating phase.
Source Title: physica status solidi (RRL) – Rapid Research Letters
ISSN: 18626270
DOI: 10.1002/pssr.202000257
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