Fyzikální ústav Akademie věd ČR

Události

Inelastic Electron Tunneling through an Adatom: Selection Rules and Orbital Exchange

Seminar / Tue, 16/05/2017 - 10:00 - 11:00

Jindřich Kolorenč (Fyzikální ústav AV ČR, v.v.i.)

I investigate tunneling of electrons from an STM tip to a substrate through a magnetic adatom by means of the Anderson impurity model. I employ an approximation analogous to the cotunneling theory [1] and concentrate on f-electron adatoms with large spin-orbital coupling. I compare the obtained inelastic electron tunneling spectra (IETS) with predictions of the spin model that has been very successful in the case of transition-metal adatoms [2]. When the spin model is applied to f electrons, the adatom spin S is replaced with its angular momentum J [3,4].

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Atomic-Scale Engineering of Solid Interfaces: Towards Enhanced Electronic and Optoelectronic Functionalities

Seminar / Thu, 18/05/2017 - 15:00 - 16:00

Agustin E. Schiffrin (School of Physics & Astronomy, Monash University, Clayton, Victoria, Australia ARC Centre of Excellence in Future Low-Energy Electronics Technologies, Monash University, Clayton, Victoria, Australia)

Electronics and optoelectronics technologies rely on the control of electric charge at the interfaces between active materials of solid-state devices. This behaviour is dictated by quantum mechanical phenomena unfolding at the nanoscale and depends strongly on the atomic-scale morphology of these systems. Controlling the atomic-scale structure of such interfaces is hence essential for optimizing the electronic and optoelectronic properties of solid-state systems, with potential for developing enhanced nanoelectronics, light-harvesting and light-emitting technologies.

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Tailoring graphene electronic, chemical and mechanical properties: interaction with metals, Moire Patterns and the role of defects

Seminar / Tue, 30/05/2017 - 10:00

Rubén Pérez (Scanning Probe Microscopy Theory & Nanomechanics Group ; Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain , http://www.uam.es/spmth/ )

The talk will start with a brief summary of the research activity of the SPMTH group, in particular, our recent developments to describe tip-sample transport and interactions for the simulation of STM and AFM [1,2], reducible oxides for catalysys and optoelectronics [3], graphene edge states and vacancy-induced magnetism [4], and the challenges involved in the imaging of surfaces and large biomolecules in their native liquid environment [5,6].

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STM investigation of laser driven processes at surfaces

Seminar / Tue, 13/06/2017 - 10:00 - 11:00

Karina Morgenstern (Chair of Physical Chemistry I; Ruhr-Universität Bochum, Germany)

While photochemistry in the gas phase demands a resonant excitation of the molecules, the presence of a metal surface in surface chemistry opens a different pathway via the creation of hot electrons in the metal and subsequent attachment of these energetic electrons to adsorbed molecules. We use two set-ups that combine a low-temperature scanning tunneling microscope operating below 10 K with a frequency doubled femto-second laser and a tunable pico-second laser, respectively, to investigate processes induced by these electrons on a single molecule basis.

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Past events

Seminar / Thu, 04/05/2017 - 11:00

 Fotoelektronová spektroskopie a mikroskopie pevných látek: NanoESCA

Seminar / Tue, 02/05/2017 - 15:00

 One step model description of photoemission: Correlations, Matrix elements and Temperature effects

Seminar / Tue, 02/05/2017 - 14:00

 Non-trivial topology of diamond and zincblende semiconductors

Seminář ELI Beamlines / Fri, 28/04/2017 - 10:30

 Laser-driven neutron beams for applications. Can lasers complement or even replace particle accelerators for radiation facilities?

Seminar / Fri, 21/04/2017 - 15:00

 Controlling Single-Molecule Circuits Through Electrolytic Environment

Workshop / Wed, 19/04/2017 - 09:00

 The 32nd Ad-Hoc Workshop on Jana2006

Seminar / Tue, 18/04/2017 - 09:30

 Special seminar - Presentations for the position of the Head of the Department of Condensed Matter Theory at the Institute of Physics

Seminar / Wed, 12/04/2017 - 14:00

 Status and Plans for Large Synoptic Survey Telescope

Seminar / Thu, 06/04/2017 - 14:00

 The Phantom of the Cosmological Time-Crystals

Seminar / Thu, 06/04/2017 - 10:00

 Helical Molecules and Surfaces: Self-Assembly, Spin Filtering and Unidirectional Motors

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