Wimmer, Lara

[["dc.bibliographiccitation.artnumber","123005"],["dc.bibliographiccitation.journal","New Journal of Physics"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Herink, Georg"],["dc.contributor.author","Wimmer, Lara"],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2018-11-07T09:31:32Z"],["dc.date.available","2018-11-07T09:31:32Z"],["dc.date.issued","2014"],["dc.description.abstract","We demonstrate ultrafast terahertz (THz) field emission from a tungsten nanotip enabled by local field enhancement. Characteristic electron spectra which result from acceleration in the THz near-field are found. Employing a dual frequency pump-probe scheme, we temporally resolve different nonlinear photoemission processes induced by coupling near-infrared (NIR) and THz pulses. In the order of increasing THz field strength, we observe THz streaking, THz-induced barrier reduction (Schottky effect) and THz field emission. At intense NIR-excitation, the THz field emission is used as an ultrashort, local probe of hot electron dynamics in the apex. A first application of this scheme indicates a decreased carrier cooling rate in the confined tip geometry. Summarizing the results at various excitation conditions, we present a comprehensive picture of the distinct regimes in ultrafast photoemission in the near-and far-infrared."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [DFG-SPP 1391, ZuK 45/1]"],["dc.identifier.doi","10.1088/1367-2630/16/12/123005"],["dc.identifier.fs","607949"],["dc.identifier.isi","000346821400005"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11771"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31552"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Iop Publishing Ltd"],["dc.relation.issn","1367-2630"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","Field emission at terahertz frequencies: AC-tunneling and ultrafast carrier dynamics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]