Inelastic electron tunneling spectroscopy in molecular junctions showing quantum interference

Abstract : Destructive quantum interference effect is implemented in large area molecular junctions to improve signatures of electron-phonon interaction. Vertical molecular junctions based on a cross-conjugated anthraquinone layer were fabricated and low-noise transport measurements were performed by acquiring simultaneously the current-voltage characteristics, its second derivative, and the differential conductance. Signatures of vibrational modes excited by inelastic events are present in the whole measured voltage range and superpose to the conductance suppression induced by destructive quantum interference. As a consequence vibrational modes have improved visibility in the low energy window (<80 meV). Inelastic electron transport spectroscopy data are compared to infrared attenuated total reflection spectroscopy on Au/anthraquinone thin films. Common vibrational modes can be clearly identified, but inelastic electron tunneling spectroscopy reveals the existence of vibrational modes in a wider energy range (0–400 meV) where infrared spectroscopy is lacking.
Type de document :
Article dans une revue
Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 95, pp.165431 - 165431. 〈10.1063/1.2390698〉
Liste complète des métadonnées

Littérature citée [50 références]  Voir  Masquer  Télécharger

https://hal-univ-diderot.archives-ouvertes.fr/hal-01550359
Contributeur : Pascal Martin <>
Soumis le : jeudi 29 juin 2017 - 15:20:36
Dernière modification le : vendredi 22 juin 2018 - 13:08:01
Document(s) archivé(s) le : jeudi 18 janvier 2018 - 02:58:02

Fichier

2017-Physical Review B Inelast...
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

C Salhani, R Della Rocca, C Bessis, R Bonnet, C Barraud, et al.. Inelastic electron tunneling spectroscopy in molecular junctions showing quantum interference. Physical Review B : Condensed matter and materials physics, American Physical Society, 2017, 95, pp.165431 - 165431. 〈10.1063/1.2390698〉. 〈hal-01550359〉

Partager

Métriques

Consultations de la notice

86

Téléchargements de fichiers

121