A Fano resonance, as often observed in scattering, absorption, or transmission experiments, arises from quantum interference between a discrete optical transition and a continuous background. Here, we present a temperature-dependent study on Fano resonances observed in photoluminescence from flakes of the layered semiconductor antiferromagnet chromium thiophosphate (CrPS4). Two Fano resonances with a distinctly different temperature dependence were identified. The continuous background that is responsible for the Fano resonances is attributed to the d–d transition of the optically active Cr3+ center, predominantly the spin-forbidden 2Eg → 4A2g transition with contributions of the broad-band 4T2g → 4A2g transition. The discrete states that interfere with this continuous background are suggested to arise from localized atomic phosphorus. A model idea for explaining the individual temperature dependence of the Fano resonances is presented.
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7 February 2022
Research Article|
February 02 2022
Temperature dependence of Fano resonances in CrPS4
Special Collection:
Transport of Charge and Energy in Low-Dimensional Materials
Maurizio Riesner
;
Maurizio Riesner
1
Werkstoffe der Elektrotechnik and CENIDE, University of Duisburg-Essen
, Duisburg 47057, Germany
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Rachel Fainblat
;
Rachel Fainblat
1
Werkstoffe der Elektrotechnik and CENIDE, University of Duisburg-Essen
, Duisburg 47057, Germany
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Adam K. Budniak
;
Adam K. Budniak
2
Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Technion–Institute of Technology
, Haifa 3200003, Israel
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Yaron Amouyal
;
Yaron Amouyal
3
Department of Materials Science and Engineering, Technion–Israel Institute of Technology
, Haifa 3200003, Israel
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Efrat Lifshitz
;
Efrat Lifshitz
2
Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Technion–Institute of Technology
, Haifa 3200003, Israel
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Gerd Bacher
Gerd Bacher
a)
1
Werkstoffe der Elektrotechnik and CENIDE, University of Duisburg-Essen
, Duisburg 47057, Germany
a)Author to whom correspondence should be addressed: [email protected]
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Maurizio Riesner
1
Rachel Fainblat
1
Adam K. Budniak
2
Yaron Amouyal
3
Efrat Lifshitz
2
Gerd Bacher
1,a)
1
Werkstoffe der Elektrotechnik and CENIDE, University of Duisburg-Essen
, Duisburg 47057, Germany
2
Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Technion–Institute of Technology
, Haifa 3200003, Israel
3
Department of Materials Science and Engineering, Technion–Israel Institute of Technology
, Haifa 3200003, Israel
a)Author to whom correspondence should be addressed: [email protected]
Note: This paper is part of the JCP Special Topic on Transport of Charge and Energy in Low-Dimensional Materials.
J. Chem. Phys. 156, 054707 (2022)
Article history
Received:
November 19 2021
Accepted:
January 13 2022
Citation
Maurizio Riesner, Rachel Fainblat, Adam K. Budniak, Yaron Amouyal, Efrat Lifshitz, Gerd Bacher; Temperature dependence of Fano resonances in CrPS4. J. Chem. Phys. 7 February 2022; 156 (5): 054707. https://doi.org/10.1063/5.0079298
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