Gigahertz Frame Rate Imaging of Charge-Injection Dynamics in a Molecular Light Source

2021-10-27T10:46:45+02:00Tags: , , , , , |

Authors: Roslawska, Anna; Merino, Pablo; Leon, Christopher C.; Grewal, Abhishek; Etzkorn, Markus; Kuhnke, Klaus; Kern, Klaus Journal: NANO LETTERS Publication date: 2021/06/09 DOI: 10.1021/acs.nanolett.1c00328 Abstract: Light sources on the scale of single molecules can be addressed and characterized at their proper sub-nanometer scale by scanning tunneling microscopy-induced luminescence (STML). Such a source can be driven [...]

Atomic-Scale Structural Fluctuations of a Plasmonic Cavity

2021-09-08T20:21:00+02:00Tags: , , , , , |

Authors: Roslawska, Anna; Merino, Pablo; Grewal, Abhishek; Leon, Christopher C.; Kuhnke, Klaus; Kern, Klaus Journal: NANO LETTERS Publication date: 2021/09/08 DOI: 10.1021/acs.nanolett.1c02207 Abstract: Optical spectromicroscopies, which can reach atomic resolution due to plasmonic enhancement, are perturbed by spontaneous intensity modifications. Here, we study such fluctuations in plasmonic electroluminescence at the single-atom limit profiting from the [...]

Tailored graphenic structures directly grown on titanium oxide boost the interfacial charge transfer

2021-02-12T10:08:13+01:00Tags: , , , , |

Authors: Munoz, Roberto; Sanchez-Sanchez, Carlos; Merino, Pablo; Lopez-Elvira, Elena; Munuera, Carmen; Gant, Patricia; Lopez, Maria F.; Castellanos-Gomez, Andres; Angel Martin-Gago, Jose; Garcia-Hernandez, Mar Contribution: Article Journal: APPLIED SURFACE SCIENCE Publication date: 2020/02/28 DOI: 10.1016/j.apsusc.2019.144439 Abstract: The successful application of titanium oxide-graphene hybrids in the fields of photocatalysis, photovoltaics and photodetection strongly depends on the interfacial contact [...]

The Electron-Phonon Interaction of Low-Dimensional and Multi-Dimensional Materials from He Atom Scattering

2021-02-12T10:08:07+01:00Tags: , , , , , |

Authors: Benedek, Giorgio; Manson, Joseph R.; Miret-Artes, Salvador Contribution: Article; Early Access Journal: ADVANCED MATERIALS Publication date: 2020/06/01 DOI: 10.1002/adma.202002072 Abstract: Atom scattering is becoming recognized as a sensitive probe of the electron-phonon interaction parameter lambda at metal and metal-overlayer surfaces. Here, the theory is developed, linking lambda to the thermal attenuation of atom scattering spectra [...]

Seeing topological edge and bulk currents in time-of-flight images

2021-02-12T10:08:02+01:00Tags: , , , |

Authors: Rubio-Garcia, Alvaro; Self, Chris N.; Jose Garcia-Ripoll, Juan; Pachos, Jiannis K. Contribution: Article Journal: PHYSICAL REVIEW B Publication date: 2020/07/23 DOI: 10.1103/PhysRevB.102.041123 Abstract: Here we provide a general methodology to directly measure the topological currents emerging in the optical lattice implementation of the Haldane model. Alongside the edge currents supported by gapless edge states, transverse [...]

Topological bulk states and their currents

2021-02-12T10:08:02+01:00Tags: , , , |

Authors: Self, Chris N.; Rubio-Garcia, Alvaro; Jose Garcia-Ripoll, Juan; Pachos, Jiannis K. Contribution: Article Journal: PHYSICAL REVIEW B Publication date: 2020/07/23 DOI: 10.1103/PhysRevB.102.045424 Abstract: We provide evidence that, alongside topologically protected edge states, two-dimensional Chern insulators also support localized bulk states deep in their valence and conduction bands. These states manifest when local potential gradients are [...]

Anisotropic Quantum Emitter Interactions in Two-Dimensional Photonic-Crystal Baths

2020-01-16T12:54:29+01:00Tags: , , , |

Authors: Gonzalez-Tudela, Alejandro; Galve, Fernando Contribution: Article Journal: ACS PHOTONICS Publication date: 2019/01/01 DOI: 10.1021/acsphotonics.8b01455 Abstract: Quantum emitters interacting with two-dimensional photonic-crystal baths experience strong and anisotropic collective dissipation when they are spectrally tuned to 2D Van-Hove singularities. In this work, we show how to turn this dissipation into coherent dipole-dipole interactions with tunable range by [...]

A Single Hydrogen Molecule as an Intensity Chopper in an Electrically Driven Plasmonic Nanocavity

2020-01-16T12:54:29+01:00Tags: , , , , , |

Authors: Merino, Pablo; Roslawska, Anna; Leon, Christopher C.; Grewal, Abhishek; Grosse, Christoph; Gonzalez, Cesar; Kuhnke, Klaus; Kern, Klaus Contribution: Article Journal: NANO LETTERS Publication date: 2019/01/01 DOI: 10.1021/acs.nanolett.8b03753 Abstract: Photon statistics is a powerful tool for characterizing the emission dynamics of nanoscopic systems and their photophysics. Recent advances that combine correlation spectroscopy with scanning tunneling microscopy [...]

Charge Carrier Injection Electroluminescence with CO-Functionalized Tips on Single Molecular Emitters

2019-12-01T20:19:00+01:00Tags: , , , , , |

Authors: Dolezal, Jiri; Merino, Pablo; Redondo, Jesus; Ondic, Lukas; Cahlik, Ales; Svec, Martin Contribution: Article Journal: NANO LETTERS Publication date: 2019/12/01 DOI: 10.1021/acs.nanolett.9b03180 Abstract: We investigate electroluminescence of single molecular emitters on NaCl on Ag(111) and Au(111) with submolecular resolution in a low-temperature scanning probe microscope with tunneling current, atomic force, and light detection capabilities. The [...]

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