Supplementary Information: Quantum phase transition in a single-molecule quantum dot

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dc.creatorRoch, Nicolas
dc.creatorFlorens, Serge
dc.creatorBouchiat, Vincent
dc.creatorWernsdorfer, Wolfgang
dc.creatorBalestro, Franck
dc.date2008-09-17
dc.date.accessioned2026-07-07T10:03:30Z
dc.date.available2026-07-07T10:03:30Z
dc.descriptionQuantum criticality is the intriguing possibility offered by the laws of quantum mechanics when the wave function of a many-particle physical system is forced to evolve continuously between two distinct, competing ground states. This phenomenon, often related to a zero-temperature magnetic phase transition, can be observed in several strongly correlated materials such as heavy fermion compounds or possibly high-temperature superconductors, and is believed to govern many of their fascinating, yet still unexplained properties. In contrast to these bulk materials with very complex electronic structure, artificial nanoscale devices could offer a new and simpler vista to the comprehension of quantum phase transitions. This long-sought possibility is demonstrated by our work in a fullerene molecular junction, where gate voltage induces a crossing of singlet and triplet spin states at zero magnetic field. Electronic tunneling from metallic contacts into the $\rm{C_{60}}$ quantum dot provides here the necessary many-body correlations to observe a true quantum critical behavior.
dc.description14 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0809.2922
dc.identifierhttp://arxiv.org/abs/0809.2922
dc.identifierSupplementary information of nature, 453, 633-637, 2008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169313
dc.subjectMesoscale and Nanoscale Physics
dc.titleSupplementary Information: Quantum phase transition in a single-molecule quantum dot
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