Abstract: This talk starts with a review of analytical approximations for the nonlinear GHz-THz response of semiconductor superlattices, which are compared and contrasted with a rigorous numerical solution. Next we show experimental verifications of the theory for both voltage and input power control of the nonlinear response as well as the rectification of current-voltage current curves due to input power. To the best of our knowledge these are first verifications in this range and show very good agreement with the theoretical predictions. In the final part of the talk we...
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Semináře
Úterý, 04.06.2019 15:00
Mauro Fernandes Pereira (Department of Condensed Matter Theory, FZÚ AV ČR, v.v.i.)
Pondělí, 10.06.2019 14:00
Abdel F. Isakovic (Colgate University, Hamilton, NY, USA Cornell University, Ithaca, NY, USA)
Abstract: Charge and spin density waves (CDW/SDW) have been a subject of condensed matter research for decades. The current interest on this topic stems in part from the CDW/SDW status in the phase diagram of superconductors, especially high Tc and related novel superconductors. Additional long term interest in these materials and states originates in their occurrence in quasi-1D and quasi-2D geometries, making their nano- and atomic scale realizations candidates for quantum materials. In this talk, we will review several approaches we have been developing since mid 2000s,...
Úterý, 11.06.2019 15:00
Stephan W. Koch (Philipps University Marburg)
Abstract: This talk presents an overview of our recent work on the interaction of ultrashort, high-intensity terahertz pulses with semiconductor materials. After a brief introduction to the field of extreme nonlinear optics in atoms and solids, the basic ingredients of the microscopic semiconductor modelling are summarized. Examples of successful theory-experiment comparisons are discussed, including the generation of very high harmonics, dynamical Bloch oscillations, internal quantum interference effects, quasiparticle collisions, as well as lightwave valleytronics in TMDCs...
Pátek, 14.06.2019 09:00 - 11:00
Dr. Stefan Zollner (Academic Department Head and Professor, New Mexico State University, Las Cruces, NM, USA)
Dr. Stefan Zollner will give a series of public lectures on Optical Properties of Solids for the Institute of Physics. The lectures are recorded and placed online including other materials.
Part IX covers the following topics: Interband transitions, van Hove singularities, critical-point lineshapes.
The lectures follow the textbook by Mark Fox “Optical Properties of Solids”, with additional materials by the instructor to make the...
Pátek, 21.06.2019 09:00 - 11:00
Dr. Stefan Zollner (Academic Department Head and Professor, New Mexico State University, Las Cruces, NM, USA)
Dr. Stefan Zollner will give a series of public lectures on Optical Properties of Solids for the Institute of Physics. The lectures are recorded and placed online including other materials.
Part X covers the following topics: Photoluminescence, Einstein coefficients, quantum confinement, quantum wells, wires, and dots.
The lectures follow the textbook by Mark Fox “Optical Properties of Solids”, with additional materials by the...
Pátek, 28.06.2019 09:00 - 11:00
Dr. Stefan Zollner (Academic Department Head and Professor, New Mexico State University, Las Cruces, NM, USA)
Dr. Stefan Zollner will give a series of public lectures on Optical Properties of Solids for the Institute of Physics. The lectures are recorded and placed online including other materials.
Part XI covers the following topics: Applications I: Anisotropic material.
The lectures follow the textbook by Mark Fox “Optical Properties of Solids”, with additional materials by the instructor to make the lectures more self-contained,...
Pátek, 12.07.2019 09:00 - 11:00
Dr. Stefan Zollner (Academic Department Head and Professor, New Mexico State University, Las Cruces, NM, USA)
Dr. Stefan Zollner will give a series of public lectures on Optical Properties of Solids for the Institute of Physics. The lectures are recorded and placed online including other materials.
Part XII covers the following topics: Applications II: Properties of thin films, stress/strain, deformation potentials.
The lectures follow the textbook by Mark Fox “Optical Properties of Solids”, with additional materials by the instructor to...
Minulé semináře
| Prof. Tanmay Vachaspati | A Classical-Quantum Correspondence | 04.06.2019 13:30 |
| Jiří Kaštil | Magnetic and structural properties of Fe5SiB2 under pressure | 30.05.2019 14:00 |
| Alexander Poteryaev | Realistic description of strong correlations in solids | 28.05.2019 15:00 |
| Prof. Radenka Maric | University of Connecticut, opportunities for collaboration and technology park | 28.05.2019 11:00 |
| Libor Veis | Density matrix renormalization group method in quantum chemistry | 28.05.2019 10:00 |
| Dr. Stefan Zollner | Optical Properties of Solids VIII | 24.05.2019 09:00 |
| Wojciech Radosz | Characterization of local properties of polymer system in bond-fluctuation model | 22.05.2019 10:00 |
| F.V. Kusmartsev | Weyl metal, flat band insulator and superconductivity in thin films | 21.05.2019 15:00 |
| Roland Wiesendanger | Emergence of Majorana States in Atomic-Scale Hybrid Systems | 14.05.2019 14:00 |
| Dr. Stefan Zollner | Optical Properties of Solids VII | 10.05.2019 09:00 |
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