Relaxation of muon spins in molecular nanomagnets
We address the cause of the unusual muon spin-relaxation (μ+ SR) results on molecular nanomagnets (MNMs). Through measurements on protonated and deuterated samples of the MNMs Cr7 Mn (S=1) and Cr8 (S=0), we show that the muon spin for S≠0 MNMs is relaxed via dynamic fluctuations of the electronic sp...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2010
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| _version_ | 1797095046147735552 |
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| author | Lancaster, T Blundell, S Pratt, F Franke, I Steele, A Baker, P Salman, Z Baines, C Watanabe, I Carretta, S Timco, G Winpenny, REP |
| author_facet | Lancaster, T Blundell, S Pratt, F Franke, I Steele, A Baker, P Salman, Z Baines, C Watanabe, I Carretta, S Timco, G Winpenny, REP |
| author_sort | Lancaster, T |
| collection | OXFORD |
| description | We address the cause of the unusual muon spin-relaxation (μ+ SR) results on molecular nanomagnets (MNMs). Through measurements on protonated and deuterated samples of the MNMs Cr7 Mn (S=1) and Cr8 (S=0), we show that the muon spin for S≠0 MNMs is relaxed via dynamic fluctuations of the electronic spins. A freezing out of dynamic processes occurs on cooling and at low temperatures the muon spins are relaxed by the electronic spins which themselves are dephased by incoherent nuclear-field fluctuations. We observe a transition to a state of static magnetic order of the MNM electronic spins in Cr7Mn below 2 K. © 2010 The American Physical Society. |
| first_indexed | 2024-03-07T04:22:26Z |
| format | Journal article |
| id | oxford-uuid:cb77b236-8f95-4a9b-acca-0ba1a5ada921 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:22:26Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:cb77b236-8f95-4a9b-acca-0ba1a5ada9212022-03-27T07:15:05ZRelaxation of muon spins in molecular nanomagnetsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:cb77b236-8f95-4a9b-acca-0ba1a5ada921EnglishSymplectic Elements at Oxford2010Lancaster, TBlundell, SPratt, FFranke, ISteele, ABaker, PSalman, ZBaines, CWatanabe, ICarretta, STimco, GWinpenny, REPWe address the cause of the unusual muon spin-relaxation (μ+ SR) results on molecular nanomagnets (MNMs). Through measurements on protonated and deuterated samples of the MNMs Cr7 Mn (S=1) and Cr8 (S=0), we show that the muon spin for S≠0 MNMs is relaxed via dynamic fluctuations of the electronic spins. A freezing out of dynamic processes occurs on cooling and at low temperatures the muon spins are relaxed by the electronic spins which themselves are dephased by incoherent nuclear-field fluctuations. We observe a transition to a state of static magnetic order of the MNM electronic spins in Cr7Mn below 2 K. © 2010 The American Physical Society. |
| spellingShingle | Lancaster, T Blundell, S Pratt, F Franke, I Steele, A Baker, P Salman, Z Baines, C Watanabe, I Carretta, S Timco, G Winpenny, REP Relaxation of muon spins in molecular nanomagnets |
| title | Relaxation of muon spins in molecular nanomagnets |
| title_full | Relaxation of muon spins in molecular nanomagnets |
| title_fullStr | Relaxation of muon spins in molecular nanomagnets |
| title_full_unstemmed | Relaxation of muon spins in molecular nanomagnets |
| title_short | Relaxation of muon spins in molecular nanomagnets |
| title_sort | relaxation of muon spins in molecular nanomagnets |
| work_keys_str_mv | AT lancastert relaxationofmuonspinsinmolecularnanomagnets AT blundells relaxationofmuonspinsinmolecularnanomagnets AT prattf relaxationofmuonspinsinmolecularnanomagnets AT frankei relaxationofmuonspinsinmolecularnanomagnets AT steelea relaxationofmuonspinsinmolecularnanomagnets AT bakerp relaxationofmuonspinsinmolecularnanomagnets AT salmanz relaxationofmuonspinsinmolecularnanomagnets AT bainesc relaxationofmuonspinsinmolecularnanomagnets AT watanabei relaxationofmuonspinsinmolecularnanomagnets AT carrettas relaxationofmuonspinsinmolecularnanomagnets AT timcog relaxationofmuonspinsinmolecularnanomagnets AT winpennyrep relaxationofmuonspinsinmolecularnanomagnets |