Comment on 'Quantum Coherence between High Spin Superposition States of Single Molecule Magnet Ni4'
| dc.creator | Wernsdorfer, W. | |
| dc.date | 2004-05-21 | |
| dc.date | 2004-05-27 | |
| dc.date.accessioned | 2026-07-07T02:58:16Z | |
| dc.date.available | 2026-07-07T02:58:16Z | |
| dc.description | In a recent paper, cond-mat/0405331 (Ref. 1), del Barco et al. reported experimental studies on a Ni4 molecular system. They used an experimental method (combining microwave spectroscopy with high sensitivity magnetic measurements) that we have introduced before, cond-mat/0404410 (see also Ref. 2 and 3). Among other things, our technique allows us to monitor spin-state populations in the presence of microwave magnetic fields. Absorption line-widths give rough 'upper bounds' on the decoherence rate similar to 'standard' high frequency electron paramagnetic resonance (HF-EPR) techniques. In the case of quasi continuous radiation our technique does NOT give directly the spin-lattice relaxation time T1. For measurements like those of del Barco et al., it simply gives access to the phonon-bottleneck time, a parameter that is many orders of magnitude longer than the spin-lattice relaxation time. Any conclusion concerning quantum coherence is preliminary. | |
| dc.description | 6 pages, 1 figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0405501 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0405501 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/24016 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.subject | Materials Science | |
| dc.title | Comment on 'Quantum Coherence between High Spin Superposition States of Single Molecule Magnet Ni4' | |
| dc.type | text |