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Electron-spin resonance carried out with scanning tunneling microscopes (ESR-STM) is a recently developed experimental technique that is attracting enormous interest on account of its potential to carry out single-spin on-surface resonance…

Mesoscale and Nanoscale Physics · Physics 2023-04-19 Santiago A. Rodríguez , Sergio S. Gómez , Joaquín Fernández-Rossier , Alejandro Ferrón

We describe the design and performance of a scanning tunneling microscope (STM) which operates at a base temperature of 30 mK in a vector magnetic field. The cryogenics is based on an ultra-high vacuum (UHV) top-loading wet dilution…

Recording the fluorescence of a magneto-optical trap (MOT) is a standard tool for measuring atom numbers in experiments with ultracold atoms. When trapping few atoms in a small MOT, the emitted fluorescence increases with the atom number in…

Quantum Gases · Physics 2021-03-17 Martin Schlederer , Alexandra Mozdzen , Thomas Lompe , Henning Moritz

We study plasmon-exciton interaction by using topological singularities to spatially confine, selectively deliver, cotrap and optically probe colloidal semiconductor and plasmonic nanoparticles. The interaction is monitored in a single…

Mesoscale and Nanoscale Physics · Physics 2017-04-26 P. J. Ackerman , Haridas Mundoor , I. I. Smalyukh , Jao van de Lagemaat

The Scanning Tunneling Microscope is a powerful tool for studying the electronic properties at the atomic level, however it's relatively small scanning range and the fact that it can only operate on conducting samples prevents its…

In scanning tunneling microscopy (STM) experiments of molecules on insulating films, tunneling through molecular resonances implies transiently charging the molecule. The transition back to the charge ground state by tunneling through the…

Mesoscale and Nanoscale Physics · Physics 2023-06-16 Katharina Kaiser , Leonard-Alexander Lieske , Jascha Repp , Leo Gross

Light sources on the scale of single molecules can be addressed and characterized on their proper sub-nanometer scale by scanning tunneling microscopy induced luminescence (STML). Such a source can be driven by defined short charge pulses…

Mesoscale and Nanoscale Physics · Physics 2021-06-15 Anna Rosławska , Pablo Merino , Christopher C. Leon , Abhishek Grewal , Markus Etzkorn , Klaus Kuhnke , Klaus Kern

Indium arsenide nanowires grown by selective-area vapor phase epitaxy are used as tips for scanning tunneling microscopy (STM). The STM tips are realized by positioning the wires manually on the corner of a double cleaved gallium arsenide…

Systematic displacement measurements of freestanding graphene as a function of applied bias voltage and tunneling current setpoint using scanning tunneling microscopy (STM) are presented. When the bias voltage is increased the graphene…

Mesoscale and Nanoscale Physics · Physics 2015-01-23 P. Xu , S. D. Barber , M. L. Ackerman , J. K. Schoelz , P. M. Thibado

Atomically confined spins are emerging as active components in quantum optoelectronic devices such as quantum bits and sensors. However, interrogating single spins at atomic length-scales remains a sizeable challenge, limited by diffraction…

The Scanning Tunneling Microscope (STM) is a powerful instrument to study electronic density of states at surfaces down to atomic scale. Many interesting samples require studying variations as a function of the magnetic field, which is most…

Single dye molecules at cryogenic temperatures display many spectroscopic phenomena known from free atoms and are thus promising candidates for fundamental quantum optical studies. However, the existing techniques for the detection of…

Quantum Physics · Physics 2008-02-12 Gert Wrigge , Ilja Gerhardt , Jaesuk Hwang , Gert Zumofen , Vahid Sandoghdar

Atomic sized plasmonic tunnel junctions are of fundamental interest, with great promise as the smallest on-chip light sources in various optoelectronic applications. Several mechanisms of light emission in electrically driven plasmonic…

Mesoscale and Nanoscale Physics · Physics 2022-11-09 Yunxuan Zhu , Longji Cui , Mahdiyeh Abbasi , Douglas Natelson

We study spin-dependent conductance in a system composed of a ferromagnetic (FM) Scanning Tunneling Microscope (STM) tip coupled to a metallic host surface with an adatom. The Kondo resonance is taken into account via the Doniach-Sunjic…

Strongly Correlated Electrons · Physics 2015-05-13 A. C. Seridonio , F. M. Souza , J. Del Nero , I. A. Shelykh

Using scanning tunneling microscopy (STM), we experimentally and theoretically investigate isolated platinum phthalocyanine (PtPc) molecules adsorbed on atomically thin NaCl(100) vapor deposited on Au(111). We obtain good agreement between…

Mesoscale and Nanoscale Physics · Physics 2024-01-29 Abhishek Grewal , Christopher C. Leon , Klaus Kuhnke , Klaus Kern , Olle Gunnarsson

We describe the design, construction, and performance of an ultra-low temperature, high-field scanning tunneling microscope (STM) with two independent tips. The STM is mounted on a dilution refrigerator and operates at a base temperature of…

Mesoscale and Nanoscale Physics · Physics 2015-06-17 A. Roychowdhury , M. A. Gubrud , R. Dana , J. R. Anderson , C. J. Lobb , F. C. Wellstood , M. Dreyer

The low energy of the isomeric state of the radionuclide thorium-229 (229Th) makes it highly promising for applications in fundamental physics, precision metrology, and quantum technologies. However, directly accessing the isomeric state…

Nuclear Theory · Physics 2023-10-11 Xue Zhang , Tao Li , Xu Wang , Hui Dong

The detection of single molecules has facilitated many advances in life- and material-sciences. Commonly, it founds on the fluorescence detection of single molecules, which are for example attached to the structures under study. For…

Single-molecule fluorescence techniques are essential for investigating the molecular mechanisms in biological processes. However, achieving sub-millisecond temporal resolution to monitor fast molecular dynamics remains a significant…

Optics · Physics 2023-03-02 Sunny Tiwari , Prithu Roy , Jean-Benoît Claude , Jérôme Wenger

We investigate bright fluorescence of nitrogen (NV)- and silicon-vacancy color centers in pyramidal, single crystal diamond tips which are commercially available as atomic force microscope probes. We coherently manipulate NV electronic spin…

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