Kloth, Philipp

[["dc.bibliographiccitation.artnumber","10108"],["dc.bibliographiccitation.journal","Nature Communications"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Kloth, Philipp"],["dc.contributor.author","Kaiser, Katharina"],["dc.contributor.author","Wenderoth, Martin"],["dc.date.accessioned","2018-11-07T10:21:13Z"],["dc.date.available","2018-11-07T10:21:13Z"],["dc.date.issued","2016"],["dc.description.abstract","The miniaturization of future electronic devices is intimately connected to the ability to control electric fields on the atomic scale. In a nanoscopic system defined by a limited number of charges, the combined dynamics of bound and free charges become important. Here we present a model system based on the electrostatic interaction between a metallic tip of a scanning tunnelling microscope and a GaAs(110) semiconductor surface. The system is driven out of equilibrium by optical excitation, which provides ambipolar free charge carriers, and by an optically induced unipolar tunnel current. This combination enables the active control of the density and spatial distribution of free and bound charge in the space-charge region, that is, modifying the screening processes. Temporal fluctuations of single dopants are modified, meaning we are able to control the noise of the system. It is found that free charge carriers suppress the noise level in field-controlled, nanoscopic systems."],["dc.description.sponsorship","[CRC1073]; [C4]"],["dc.identifier.doi","10.1038/ncomms10108"],["dc.identifier.isi","000369018600001"],["dc.identifier.pmid","26728867"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12893"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42049"],["dc.notes.intern","Merged from goescholar"],["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 C | C04 Untersuchung und Kontrolle photochemischer Reaktionen durch lokale optische Anregung im Rastertunnelmikroskop"],["dc.relation.issn","2041-1723"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.title","Controlling the screening process of a nanoscaled space charge region by minority carriers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","125412"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","PHYSICAL REVIEW B"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Kloth, Philipp"],["dc.contributor.author","Wenderoth, Martin"],["dc.contributor.author","Willke, Philip"],["dc.contributor.author","Prueser, Henning"],["dc.contributor.author","Ulbrich, Rainer G."],["dc.date.accessioned","2018-11-07T09:42:38Z"],["dc.date.available","2018-11-07T09:42:38Z"],["dc.date.issued","2014"],["dc.description.abstract","Using low-temperature scanning tunneling spectroscopy we study quantum well states in the topmost copper layer of a Cu/Co/Cu(100) system above the Fermi energy. The emergence and the energetic positions of QWSs within this layer crucially depend on the interface quality tailored by the sample preparation method. Samples deposited at room temperature show a rough interface and lead to the well-known QWSs with only a momentum perpendicular to the interface. Atomically smooth interfaces for samples grown at 80 K exhibit states caused by stationary points with a large nonvanishing parallel momentum. Simulations taking into account the different band structures allow QWSs to be modeled from both stationary points and an identification of a crossover between bound and resonance states."],["dc.identifier.doi","10.1103/PhysRevB.89.125412"],["dc.identifier.isi","000332505500013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34001"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Physical Soc"],["dc.relation.issn","2469-9969"],["dc.relation.issn","2469-9950"],["dc.title","Quantum well states with nonvanishing parallel momentum in Cu/Co/Cu(100)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","e1601552"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Science Advances"],["dc.bibliographiccitation.volume","3"],["dc.contributor.author","Kloth, Philipp"],["dc.contributor.author","Wenderoth, Martin"],["dc.date.accessioned","2020-12-10T18:36:38Z"],["dc.date.available","2020-12-10T18:36:38Z"],["dc.date.issued","2017"],["dc.identifier.doi","10.1126/sciadv.1601552"],["dc.identifier.eissn","2375-2548"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/76694"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area C | C04 Untersuchung und Kontrolle photochemischer Reaktionen durch lokale optische Anregung im Rastertunnelmikroskop"],["dc.title","From time-resolved atomic-scale imaging of individual donors to their cooperative dynamics"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","123702"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","Review of Scientific Instruments"],["dc.bibliographiccitation.volume","87"],["dc.contributor.author","Kloth, Philipp"],["dc.contributor.author","Thias, T."],["dc.contributor.author","Bunjes, O."],["dc.contributor.author","von der Haar, J."],["dc.contributor.author","Wenderoth, Martin"],["dc.date.accessioned","2018-11-07T10:04:53Z"],["dc.date.available","2018-11-07T10:04:53Z"],["dc.date.issued","2016"],["dc.description.abstract","We present a combination of pulsed optical excitation and scanning tunneling microscopy with a highly flexible pulse generation method. A high frequency arbitrary wave generator drives a gigahertz electro-optical modulator, which processes a continuous-wave laser beam of a low-noise laser diode into the desired wave shape. For pump-probe excitation we generate optical pulse series in an all-electronic way. Thereby we can easily adapt parameters like pulse amplitude, width, or repetition cycle to the demands of the experiment. This setup is used to study different dynamic processes at the GaAs(110) surface. Separating thermally induced effects from electrically induced effects allows us to quantify the thermal contribution of the optical excitation in STM experiments. Time-resolved decay spectra of the photo-generated electron-hole pairs demonstrate the nanoscale spatial resolution. Published by AIP Publishing."],["dc.description.sponsorship","DFG [CRC1073 C4]"],["dc.identifier.doi","10.1063/1.4971189"],["dc.identifier.isi","000392096800028"],["dc.identifier.pmid","28040983"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/38792"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Inst Physics"],["dc.relation.issn","1089-7623"],["dc.relation.issn","0034-6748"],["dc.title","A versatile implementation of pulsed optical excitation in scanning tunneling microscopy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]