Angle-resolved optically detected magnetic resonance as a tool for strain determination in nanostructures

Bogucki, A.; Goryca, M.; Łopion, A.; Pacuski, W.; Połczyńska, Karolina; Domagała, J. Z.; Tokarczyk, Mateusz; Fąs, T.; Golnik, A.; Kossacki, P.

doi:10.1103/physrevb.105.075412

Cited by 2 publications

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“…Changes in the crystal field caused by deformation in such systems lead to the splitting of the energy levels of paramagnetic ions with spin S > 1/2 in zero magnetic field and the appearance of a fine structure in the EPR spectra. This effect was observed in EPR studies of Mn 2+ ions in semiconductor superlattices of ZnTe/MnTe and CdTe/MnTe grown by molecular-beam epitaxy. , It is natural to assume that in NPLs there is an axial crystal field normal to the NPL plane.…”

Section: Resultsmentioning

confidence: 85%

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High-Frequency EPR and ENDOR Spectroscopy of Mn²⁺ Ions in CdSe/CdMnS Nanoplatelets

et al. 2023

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Semiconductor colloidal nanoplatelets based of CdSe have excellent optical properties. Their magneto-optical and spin-dependent properties can be greatly modified by implementing magnetic Mn 2+ ions, using concepts well established for diluted magnetic semiconductors. A variety of magnetic resonance techniques based on high-frequency (94 GHz) electron paramagnetic resonance in continuous wave and pulsed mode were used to get detailed information on the spin structure and spin dynamics of Mn 2+ ions in core/shell CdSe/(Cd,Mn)S nanoplatelets. We observed two sets of resonances assigned to the Mn 2+ ions inside the shell and at the nanoplatelet surface. The surface Mn demonstrates a considerably longer spin dynamics than the inner Mn due to lower amount of surrounding Mn 2+ ions. The interaction between surface Mn 2+ ions and 1 H nuclei belonging to oleic acid ligands is measured by means of electron nuclear double resonance. This allowed us to estimate the distances between the Mn 2+ ions and 1 H nuclei, which equal to 0.31 ± 0.04, 0.44 ± 0.09, and more than 0.53 nm. This study shows that the Mn 2+ ions can serve as atomic-size probes for studying the ligand attachment to the nanoplatelet surface.

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Section: Resultsmentioning

confidence: 85%

“…This effect was observed in EPR studies of Mn 2+ ions in semiconductor superlattices of ZnTe/MnTe and CdTe/MnTe grown by molecular-beam epitaxy. 35,36 It is natural to assume that in NPLs there is an axial crystal field normal to the NPL plane.…”

Section: Resultsmentioning

confidence: 99%

High-Frequency EPR and ENDOR Spectroscopy of Mn²⁺ Ions in CdSe/CdMnS Nanoplatelets

et al. 2023

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Magnetic ion relaxation time distribution within a quantum well

Łopion

Bogucki²,

Kraśnicki³

et al. 2022

Phys. Rev. B

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Angle-resolved optically detected magnetic resonance as a tool for strain determination in nanostructures

Cited by 2 publications

References 80 publications

High-Frequency EPR and ENDOR Spectroscopy of Mn²⁺ Ions in CdSe/CdMnS Nanoplatelets

High-Frequency EPR and ENDOR Spectroscopy of Mn²⁺ Ions in CdSe/CdMnS Nanoplatelets

Magnetic ion relaxation time distribution within a quantum well

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Angle-resolved optically detected magnetic resonance as a tool for strain determination in nanostructures

Cited by 2 publications

References 80 publications

High-Frequency EPR and ENDOR Spectroscopy of Mn2+ Ions in CdSe/CdMnS Nanoplatelets

High-Frequency EPR and ENDOR Spectroscopy of Mn2+ Ions in CdSe/CdMnS Nanoplatelets

Magnetic ion relaxation time distribution within a quantum well

Contact Info

Product

Resources

About

High-Frequency EPR and ENDOR Spectroscopy of Mn²⁺ Ions in CdSe/CdMnS Nanoplatelets

High-Frequency EPR and ENDOR Spectroscopy of Mn²⁺ Ions in CdSe/CdMnS Nanoplatelets