NANO
Nanophysics Center
Nanophysics Center
In the nanophysics group, we do experimental and theoretical research on various systems from nanometers to micron scale. Our experimental work includes the fabrication, growth, and characterization of some types of nanostructures, like arrays of silicon nanowires, thin films, and nanoparticles. On the theoretical side, we perform calculations and computer simulations of vacuum electronic devices, perovskite-based solar cells, spin and charge transport and excitons in semiconductor heterostructures, and in particular in core-shell nanowires. We also work with models of topological insulators.
Faculty
- Position: Professor
- Website: http://www.ru.is/haskolinn/starfsfolk/manoles
Research projects
- Electronic states in core-shell nanowires
- Time-dependent transport at nanoscale
My research in physics is oriented to theoretical modelling and numerical calculations of quantum-mechanical electronic properties of semiconductor nanostructures. My work includes research on two-dimensional electron systems in magnetic fields, screening, exchange, and other many-body Coulomb phenomena, edge states, transport and electromagnetic absorption in modulated systems, electronic states in periodic electric and magnetic fields, spin polarization, magnetization. At present I am mostly involved in time dependent electronic transport in open nanosystems, charge polarization, and thermoelectric transport. I am interested in core-shell nanowires, in nanostructured solar cells, and in effects related to geometrical confinement of electrons at nanoscale.
Publication
Research staff and close collaborators
Publication
Spin configuration of an array of quantum rings controlled by cavity photons
Vidar Gudmundsson, Vram Mughnetsyan, Hsi-Sheng Goan, Jeng-Da Chai, Nzar Rauf Abdullah, Chi-Shung Tang, Valeriu Moldoveanu, Andrei Manolescu
Physical Review B (10.1103/PhysRevB.111.115304)
https://doi.org/10.1103/PhysRevB.111.115304- Silicon nanowire-based ammonia gas sensor with enhanced response at elevated humidity levels
M T Sultan, E Fakhri, P Powroznik, A Manolescu, W Jakubik, A Kazmierczak-Balata, H G Svavarsson
Semiconductor Science and Technology (10.1088/1361-6641/adb20a)
https://doi.org/10.1088/1361-6641/adb20a - Aharonov-Bohm and Altshuler-Aronov-Spivak oscillations in the quasiballistic regime in phase-pure GaAs/InAs core/shell nanowires
Farah Basarić, Vladan Brajović, Gerrit Behner, Kristof Moors, William Schaarman, Andrei Manolescu, Raghavendra Juluri, Ana M. Sanchez, Jin Hee Bae, Hans Lüth, Detlev Grützmacher, Alexander Pawlis, Thomas Schäpers
Physical Review B (10.1103/xljl-s1lp)
https://doi.org/10.1103/xljl-s1lp
Funding
EEA Financial Mechanism
Icelandic Research Fund
Technology Development Fund
Landsvirkjun Energy Research Fund
Air Force Office of Scientific Research
Research Funds of Reykjavik University
Reykjavík University Molecular Dynamics code for Electron Emission and Dynamics (RUMDEED)
We have developed a Molecular Dynamics code designed to simulate vacuum diodes. This code supports simulations of:
- Field emission with planar and prolate spheroidal geometries
- Thermal-field emission with planar geometry
- Photoemission with planar geometry
Detailed descriptions of the code and its results are available in several published articles. The code, along with its manual, is hosted on Github under an open-source license.
For questions or feedback, please contact Ágúst Valfels or Kristinn Torfason.
