{"id":4081,"date":"2026-06-12T11:47:16","date_gmt":"2026-06-12T09:47:16","guid":{"rendered":"https:\/\/equipes.lps.u-psud.fr\/ns2\/?p=4081"},"modified":"2026-06-12T11:50:31","modified_gmt":"2026-06-12T09:50:31","slug":"evidence-for-atomic-scale-vibron-mediated-electron-bunching","status":"publish","type":"post","link":"https:\/\/equipes.lps.u-psud.fr\/ns2\/evidence-for-atomic-scale-vibron-mediated-electron-bunching\/","title":{"rendered":"Evidence for Atomic-Scale Vibron-Mediated Electron Bunching"},"content":{"rendered":"\n

Due to the Coulomb blockade effect, electrons typically tunnel into a localized state one by one, showing antibunching behavior. However, theory predicts that strong vibronic coupling can generate electron bunching locally, yet direct atomic-scale evidence has remained elusive. In this Letter, we report an atomically resolved shot-noise study probing the transport statistics of single-electron tunneling in an atomic impurity coupled to a vibrational mode. Conventional time-averaged conductance spectroscopy reveals clear signatures of vibron-assisted tunneling in this atomically sized nanoelectromechanical system. Simultaneous shot-noise measurements at the impurity center show super-Poissonian noise, providing direct evidence that vibronic coupling drives electron bunching during tunneling. As a future outlook, if coherence between electrons can be implemented, vibron-mediated electron bunching at single atomic sites may be exploited as a local injection source of \ud835\udc41-paired electrons.<\/p>\n\n\n\n

See the FOCUS made by Physical Review Letters here: https:\/\/physics.aps.org\/articles\/v19\/s75<\/a><\/p>\n\n\n\n

<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Vibrations Make Electrons Team Up<\/p>\n\n\n\n

Reference<\/strong>
Evidence for Atomic-Scale Vibron-Mediated Electron Bunching
A. Maiti<\/a><\/span><\/a>, M. Amato<\/a><\/span><\/a>, V.\u2009S. Stolyarov<\/a><\/span><\/a>, H. Aubin<\/a><\/span><\/a>, J. Est\u00e8ve<\/a><\/span><\/a>, F. Pistolesi<\/a><\/span><\/a>, M. Aprili<\/a>, and F. Massee<\/a>
Phys. Rev. Lett. 136<\/strong>, 236501 (2026) Editor\u2019s suggestion and Featured in Physics
doi:https:\/\/journals.aps.org\/prl\/abstract\/10.1103\/zvf5-wln4<\/a><\/p>\n\n\n\n

Contact<\/strong>
Freek Massee

<\/p>\n","protected":false},"excerpt":{"rendered":"

Due to the Coulomb blockade effect, electrons typically tunnel into a localized state one by one, showing antibunching behavior. However, theory predicts that strong vibronic coupling can generate electron bunching …<\/p>\n","protected":false},"author":77,"featured_media":4083,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4081","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts\/4081","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/users\/77"}],"replies":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/comments?post=4081"}],"version-history":[{"count":2,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts\/4081\/revisions"}],"predecessor-version":[{"id":4086,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/posts\/4081\/revisions\/4086"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/media\/4083"}],"wp:attachment":[{"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/media?parent=4081"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/categories?post=4081"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/equipes.lps.u-psud.fr\/ns2\/wp-json\/wp\/v2\/tags?post=4081"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}