The anomalous Stark effect of single terrylene molecules in p-terphenyl crystals
| hal.structure.identifier | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM] | |
| dc.contributor.author | BORDAT, Patrice | |
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| dc.contributor.author | ORRIT, M. | |
| hal.structure.identifier | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux [IPREM] | |
| dc.contributor.author | BROWN, Ross | |
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| dc.contributor.author | WÜRGER, Aloïs | |
| dc.date.issued | 2000 | |
| dc.identifier.issn | 0301-0104 | |
| dc.description.abstractEn | Single terrylene molecules embedded in a p-terphenyl crystal behave like well-defined optical switches. Recent measurements of the shift of their optical lines under an applied electric field (Stark effect) have revealed surprising anomalies: unexpectedly large and widely spread differences of polarizability between the ground and excited states, even in crystals of excellent quality. Some molecules even had a greater polarizability in the ground than in the excited state. We propose to explain these results by a symmetry breaking in the supermolecule (including the terrylene molecule and the first shells of p-terphenyl neighbours), leading to two distorted conformations with opposite dipole moments. Tunnelling between these conformations gives rise to a quadratic Stark effect with a large effective polarizability. The model is internally consistent, and provides reasonable orders of magnitude for the tunnel barrier. We argue that this tunnelling involves correlated movements of groups of atoms, 1 nm apart, and therefore the system is particularly sensitive to small residual strains in otherwise perfect crystals. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.title.en | The anomalous Stark effect of single terrylene molecules in p-terphenyl crystals | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/S0301-0104(00)00173-7 | |
| dc.subject.hal | Physique [physics] | |
| bordeaux.journal | Chemical Physics | |
| bordeaux.page | 63-72 | |
| bordeaux.volume | 258 | |
| bordeaux.issue | 1 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01550497 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01550497v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemical%20Physics&rft.date=2000&rft.volume=258&rft.issue=1&rft.spage=63-72&rft.epage=63-72&rft.eissn=0301-0104&rft.issn=0301-0104&rft.au=BORDAT,%20Patrice&ORRIT,%20M.&BROWN,%20Ross&W%C3%9CRGER,%20Alo%C3%AFs&rft.genre=article |
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