Cel 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. Dziedzina nauki natural sciencesphysical sciencescondensed matter physicsmesoscopic physicsnatural sciencesphysical scienceselectromagnetism and electronicssuperconductivity Program(-y) 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) Temat(-y) ERC-AG-PE3 - ERC Advanced Grant - Condensed matter physics Zaproszenie do składania wniosków ERC-2013-ADG Zobacz inne projekty w ramach tego zaproszenia System finansowania ERC-AG - ERC Advanced Grant Instytucja przyjmująca WEIZMANN INSTITUTE OF SCIENCE Wkład UE € 2 428 042,00 Adres HERZL STREET 234 7610001 Rehovot Izrael Zobacz na mapie Rodzaj działalności Higher or Secondary Education Establishments Kierownik naukowy Mordehai (Moty) Heiblum (Prof.) Kontakt administracyjny Gabi Bernstein (Ms.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych Beneficjenci (1) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko WEIZMANN INSTITUTE OF SCIENCE Izrael Wkład UE € 2 428 042,00 Adres HERZL STREET 234 7610001 Rehovot Zobacz na mapie Rodzaj działalności Higher or Secondary Education Establishments Kierownik naukowy Mordehai (Moty) Heiblum (Prof.) Kontakt administracyjny Gabi Bernstein (Ms.) Linki Kontakt z organizacją Opens in new window Strona internetowa Opens in new window Koszt całkowity Brak danych
