Obiettivo I propose to study ‘neutral excitations’ in 2d and 1d electronic systems. Such excitations, rarely studied, are unique since they are chargeless but may carry energy. Being byproducts of electron interaction, they come in a few flavors: (i) Downstream modes in composite edge channels of the integer quantum Hall effect (IQHE) regime; (ii) Upstream modes in the fractional quantum Hall effect (FQHE) regime; and (iii) Zero energy Majorana states (localized or propagating quasi-particles), in non-abelian FQHE states and in 1d topological P-wave superconductors. My main interests in neutral modes in the QHE regime are: (a) Their direct association with the nature of the wavefunction of the quantum state; (b) Being excited when a charge mode is being partitioned (say, by a quantum point contact), they may play a prime role in dephasing interference of quasi-particles due to the energy they rob (in the partitioning process). As for detecting Majorana quasi-particles, and aside from the exciting physics, their non-abelian nature makes them attractive as building blocks in ‘decoherence resistant’ systems. Based on our acquired abilities, such as material growth, processing techniques, and sensitive measurement techniques, I plan to perform experiments, which include: thorough studies of downstream and upstream neutral modes via shot noise and thermoelectric current measurements; proving (or disproving) their involvement in dephasing fractionally charged quasi-particles; growing and processing structures that harbor Majorana states (in 1d nano-wires and in 2d FQHE regime; and, possibly, eventually, manipulate Majorana states (by coupling and braiding). Experiments will employ, e.g. ultra-low temperatures, sensitive shot noise measurements, cross-correlation of current fluctuations, and interference of quasi-particles (charge and neutral) in novel interferometers. Campo scientifico natural sciencesphysical sciencescondensed matter physicsmesoscopic physicsnatural sciencesphysical scienceselectromagnetism and electronicssuperconductivity Programma(i) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Argomento(i) ERC-AG-PE3 - ERC Advanced Grant - Condensed matter physics Invito a presentare proposte ERC-2013-ADG Vedi altri progetti per questo bando Meccanismo di finanziamento ERC-AG - ERC Advanced Grant Istituzione ospitante WEIZMANN INSTITUTE OF SCIENCE Contributo UE € 2 428 042,00 Indirizzo HERZL STREET 234 7610001 Rehovot Israele Mostra sulla mappa Tipo di attività Higher or Secondary Education Establishments Ricercatore principale Mordehai (Moty) Heiblum (Prof.) Contatto amministrativo Gabi Bernstein (Ms.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato Beneficiari (1) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto WEIZMANN INSTITUTE OF SCIENCE Israele Contributo UE € 2 428 042,00 Indirizzo HERZL STREET 234 7610001 Rehovot Mostra sulla mappa Tipo di attività Higher or Secondary Education Establishments Ricercatore principale Mordehai (Moty) Heiblum (Prof.) Contatto amministrativo Gabi Bernstein (Ms.) Collegamenti Contatta l’organizzazione Opens in new window Sito web Opens in new window Costo totale Nessun dato