Herink, Georg

[["dc.bibliographiccitation.artnumber","UNSP 80"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Applied Physics B"],["dc.bibliographiccitation.volume","122"],["dc.contributor.author","Echternkamp, Katharina E."],["dc.contributor.author","Herink, Georg"],["dc.contributor.author","Yalunin, Sergey V."],["dc.contributor.author","Rademann, K."],["dc.contributor.author","Schaefer, S."],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2018-11-07T10:16:24Z"],["dc.date.available","2018-11-07T10:16:24Z"],["dc.date.issued","2016"],["dc.description.abstract","Metallic nanotips exhibit large electric field enhancements over an extremely broad bandwidth spanning from the optical domain down to static fields. They therefore constitute ideal model systems for the investigation of the inherent frequency scalings of highly nonlinear and strong-field phenomena. Here, we present a comprehensive study of strong-field photoemission from individual metallic nanotips. Combining high local fields and variable-wavelength mid-infrared pulses, we investigate electron dynamics governed by the nanoscale confinement of the optical near-field. In particular, we characterize a transition to sub-cycle, field-driven electron acceleration. The experimental findings are corroborated by semiclassical calculations within a two-step model."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [SPP 1391, SFB 1073]"],["dc.identifier.doi","10.1007/s00340-016-6351-x"],["dc.identifier.isi","000372894600013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41031"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area A | A05 Nanoskalige Untersuchung raumzeitlicher Relaxation in heterogenen Systemen mit ultraschneller Transmissionselektronenmikroskopie"],["dc.relation.issn","1432-0649"],["dc.relation.issn","0946-2171"],["dc.title","Strong-field photoemission in nanotip near-fields: from quiver to sub-cycle electron dynamics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","432"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Nature Physics"],["dc.bibliographiccitation.lastpage","436"],["dc.bibliographiccitation.volume","10"],["dc.contributor.author","Wimmer, Lara"],["dc.contributor.author","Herink, Georg"],["dc.contributor.author","Solli, Daniel R."],["dc.contributor.author","Yalunin, Sergey V."],["dc.contributor.author","Echternkamp, Katharina E."],["dc.contributor.author","Ropers, Claus"],["dc.date.accessioned","2018-11-07T09:39:35Z"],["dc.date.available","2018-11-07T09:39:35Z"],["dc.date.issued","2014"],["dc.description.abstract","The active control of matter by strong electromagnetic fields is of growing importance, with applications all across the optical spectrum from the extreme-ultraviolet to the far-infrared. In recent years, phase-stable terahertz fields have shown tremendous potential for observing and manipulating elementary excitations in solids(1-3). In the gas phase, on the other hand, driving free charges with terahertz transients provides insight into ultrafast ionization dynamics(4,5). Developing such approaches for locally enhanced terahertz fields in nanostructures will create new means to govern electron currents on the nanoscale. Here, we use single-cycle terahertz transients to demonstrate extensive control over nanotip photoelectron emission. The terahertz near-field is shown to either enhance or suppress photocurrents, with the tip acting as an ultrafast rectifying diode(6). We record phase-resolved sub-cycle dynamics and find spectral compression and expansion arising from electron propagation within the terahertz near-field. These interactions produce rich spectro-temporal features and offer unprecedented control over ultrashort free electron pulses for imaging and diffraction."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [DFG-SPP 1391, ZuK 45/1]"],["dc.identifier.doi","10.1038/NPHYS2974"],["dc.identifier.isi","000336969500019"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33316"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Nature Publishing Group"],["dc.relation.issn","1745-2481"],["dc.relation.issn","1745-2473"],["dc.title","Terahertz control of nanotip photoemission"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]