Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals
We report on PbS colloidal nanocrystals that combine within one structure solubility in physiological solvents with near-infrared photoluminescence, and magnetic and optical properties tuneable by the controlled incorporation of magnetic impurities (Mn). We use high magnetic fields (B up to 30 T) t...
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Published: |
Royal Society of Chemistry
2014
|
| Online Access: | https://eprints.nottingham.ac.uk/42082/ |
| _version_ | 1848796414133403648 |
|---|---|
| author | Turyanska, L. Hill, R.J.A. Makarovsky, Oleg Moro, F. Knott, A.N. Larkin, O.J. Patanè, Amalia Meaney, A. Christianen, P.C.M. Fay, M.W. Curry, R.J. |
| author_facet | Turyanska, L. Hill, R.J.A. Makarovsky, Oleg Moro, F. Knott, A.N. Larkin, O.J. Patanè, Amalia Meaney, A. Christianen, P.C.M. Fay, M.W. Curry, R.J. |
| author_sort | Turyanska, L. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | We report on PbS colloidal nanocrystals that combine within one structure solubility in physiological solvents with near-infrared photoluminescence, and magnetic and optical properties tuneable by the controlled incorporation of magnetic impurities (Mn). We use high magnetic fields (B up to 30 T) to measure the magnetization of the nanocrystals in liquid and the strength of the sp-d exchange interaction between the exciton and the Mn-ions. With increasing Mn-content from 0.1% to 7%, the mass magnetic susceptibility increases at a rate of ~ 10-7 m3/kg per Mn percentage; correspondingly, the exciton g-factor decreases from 0.47 to 0.10. The controlled modification of the paramagnetism, fluorescence and exciton g-factor of the nanocrystals is relevant to the implementation of these paramagnetic semiconductor nanocrystals in quantum technologies ranging from quantum information to magnetic resonance imaging. |
| first_indexed | 2025-11-14T19:47:36Z |
| format | Article |
| id | nottingham-42082 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:47:36Z |
| publishDate | 2014 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-420822020-05-04T16:49:38Z https://eprints.nottingham.ac.uk/42082/ Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals Turyanska, L. Hill, R.J.A. Makarovsky, Oleg Moro, F. Knott, A.N. Larkin, O.J. Patanè, Amalia Meaney, A. Christianen, P.C.M. Fay, M.W. Curry, R.J. We report on PbS colloidal nanocrystals that combine within one structure solubility in physiological solvents with near-infrared photoluminescence, and magnetic and optical properties tuneable by the controlled incorporation of magnetic impurities (Mn). We use high magnetic fields (B up to 30 T) to measure the magnetization of the nanocrystals in liquid and the strength of the sp-d exchange interaction between the exciton and the Mn-ions. With increasing Mn-content from 0.1% to 7%, the mass magnetic susceptibility increases at a rate of ~ 10-7 m3/kg per Mn percentage; correspondingly, the exciton g-factor decreases from 0.47 to 0.10. The controlled modification of the paramagnetism, fluorescence and exciton g-factor of the nanocrystals is relevant to the implementation of these paramagnetic semiconductor nanocrystals in quantum technologies ranging from quantum information to magnetic resonance imaging. Royal Society of Chemistry 2014-06-13 Article PeerReviewed Turyanska, L., Hill, R.J.A., Makarovsky, Oleg, Moro, F., Knott, A.N., Larkin, O.J., Patanè, Amalia, Meaney, A., Christianen, P.C.M., Fay, M.W. and Curry, R.J. (2014) Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals. Nanoscale, 6 . pp. 8919-8925. ISSN 2040-3372 http://pubs.rsc.org/en/Content/ArticleLanding/2014/NR/C4NR02336F#!divAbstract doi:10.1039/C4NR02336F doi:10.1039/C4NR02336F |
| spellingShingle | Turyanska, L. Hill, R.J.A. Makarovsky, Oleg Moro, F. Knott, A.N. Larkin, O.J. Patanè, Amalia Meaney, A. Christianen, P.C.M. Fay, M.W. Curry, R.J. Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals |
| title | Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals |
| title_full | Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals |
| title_fullStr | Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals |
| title_full_unstemmed | Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals |
| title_short | Tuneable paramagnetic susceptibility and exciton g-factor in Mn-doped PbS colloidal nanocrystals |
| title_sort | tuneable paramagnetic susceptibility and exciton g-factor in mn-doped pbs colloidal nanocrystals |
| url | https://eprints.nottingham.ac.uk/42082/ https://eprints.nottingham.ac.uk/42082/ https://eprints.nottingham.ac.uk/42082/ |