Thomas Olsen
Assistant Professor
Department of physics
Technical University of Denmark
Building 307 - Room 210
DK-2800 Kongens Lyngby
Research
My main area of research is electronic structure theory of solids and nanostructured materials. In particular
- Spin-orbit phenomena in the solid state. Topological insulators and Berry phase physics
- Development of new functionals for ground state energy calculations
- Excitonic effects in low-dimensional materials
- Toy models for strongly correlated systems
- Non-adiabatic dynamics
The primary tool for my work is the electronic structure code GPAW, which can do state-of-the-art Density Functional Theory and Many-Body Perturbation Theory calculations. The code is open source and is being develeloped continuously by myself and many others.
Teaching
- 2015 - 2016: Statistical Physics. Graduate course
- 2017 --- : Quantum Mechanics. Undergraduate course
Brief CV
- September 2015 --- : Assistant Professor at CAMD - DTU
- January 2015 - August 2015 : Post Doc at CAMD - DTU
- January 2014 - December 2014 : Post Doc at CFM - Universidad del Pais Vasco
- September 2010 - December 2013 : Post Doc at CAMD - DTU
- August 2007 - August 2010: Ph.d Student at CINF - DTU
- April 2007 - Juli 2007: Research assistent at CINF - DTU
- August 2006: Cand.Scient Physics - University of Copenhagen
Publications:
- T. Olsen, S. Latini, F. Rasmussen and K. S. Thygesen
Simple Screened Hydrogen Model of Excitons in Two-Dimensional Materials
Phys. Rev. Lett. 116, 056401 (2016)
- M. Pandey, F. Rasmussen, K. Kuhar, T. Olsen, K. W. Jacobsen and K. S. Thygesen
Defect-Tolerant Monolayer Transition Metal Dichalcogenides
Nano Letters 16, 2234 (2016)
- T. S. Jauho, T. Olsen, T. Bligaard and K. S. Thygesen
Improved description of metal oxide stability: Beyond the random phase approximation with renormalized kernels
Phys. Rev. B 92, 115140 (2015)
- S. Latini, T. Olsen and K. S. Thygesen
Excitons in van der Waals heterostructures: The important role of dielectric screening
Phys. Rev. B 92, 245123 (2015)
- T. Olsen and I. Souza
Valley Hall effect in disordered monolayer MoS2 from first principles
Phys. Rev. B 92, 125146 (2015)
- T. Olsen and K. S. Thygesen
Accurate Ground-State Energies of Solids and Molecules from Time-Dependent Density-Functional Theory
Phys. Rev. Lett. 112, 203001 (2014)
- T. Olsen and K. S. Thygesen
Static correlation beyond the random phase approximation: Dissociating H2 with the Bethe-Salpeter equation and time-dependent GW
J. Chem. Phys. 140, 164116 (2014)
- Falco Hüser, T. Olsen and K. S. Thygesen
How dielectric screening in two-dimensional crystals affects the convergence of excited-state calculations: Monolayer MoS2
Phys. Rev. B 88, 245309 (2013)
- T. Olsen and K. S. Thygesen
Beyond the random phase approximation: Improved description of short-range correlation by a renormalized adiabatic local density approximation
Phys. Rev. B 88, 115131 (2013)
- Falco Hüser, T. Olsen and K. S. Thygesen
Quasiparticle GW calculations for solids, molecules, and two-dimensional materials
Phys. Rev. B 87, 235132 (2013)
- T. Olsen and K. S. Thygesen
From graphene on metals to cohesive energies of solids and molecules with the random phase approximation
Phys. Rev. B 87, 075111 (2013)
- T. Olsen and K. S. Thygesen
Extending the random-phase approximation for electronic correlation energies: The renormalized adiabatic local density approximation
Phys. Rev. B 86, 081103(R) (2012)
- I. E. Castelli, T. Olsen, S. Datta, D. D. Landis, S. Dahl, K. S. Thygesen and K. W. Jacobsen
Computational screening of perovskite metal oxides for optimal solar light capture
Energy Environ. Sci. 5, 5814 (2012)
- T. Olsen, J. Yan, J. J. Mortensen and K. S. Thygesen
Dispersive and Covalent Interactions between Graphene and Metal Surfaces from the Random Phase Approximation
Phys. Rev. Lett. 107, 156401 (2011)
- B. Siemer, T. Olsen, T. Hoger, M. Rutkowski, C. Thewes, S. Düsterer, J. Schiøtz and H. Zacharias
Desorption of H atoms from graphite (0001) using XUV free electron laser pulses
Chem. Phys. Lett. 500, 291 (2010)
- T. Olsen and J. Schiøtz
Memory effects in nonadiabatic molecular dynamics at metal surfaces
J. Chem. Phys. 133, 134109 (2010)
- T. Olsen and J. Schiøtz
Quantum corrected Langevin dynamics for adsorbates on metal surfaces interacting with hot electrons
J. Chem. Phys. 133, 034115 (2010)
- R. Frigge, T. Hoger, B. Siemer, H. Witte, M. Silies, H. Zacharias, T. Olsen and J. Schiøtz
Site Specificity in Femtosecond Laser Desorption of Neutral H Atoms from Graphite(0001)
Phys. Rev. Lett. 104, 256102 (2010)
- J. Enkovaara et al.
Electronic structure calculations with GPAW: a real-space implementation of the projector augmented-wave method
J. Phys.: Condens. Matter 22, 253202 (2010)
- T. Olsen and J. Schiøtz
Vibrationally mediated control of single-electron transmission in weakly coupled molecule-metal junctions
Phys. Rev. B 81, 115443 (2010)
- T. Olsen and J. Schiøtz
Origin of Power Laws for Reactions at Metal Surfaces Mediated by Hot Electrons
Phys. Rev. Lett 103, 238301 (2009)
- J. S. Hummelshøj et al.
Density functional theory based screening of ternary alkali-transition metal borohydrides: A computational material design project
J. Chem. Phys. 131, 014101 (2009)
- T. Olsen
Inelastic scattering in a local polaron model with quadratic coupling to bosons
Phys. Rev. B 79, 235414 (2009)
- J. Gavnholt, A. Rubio, T. Olsen, K. S. Thygesen and J. Schiøtz
Hot-electron-assisted femtochemistry at surfaces: A time-dependent density functional theory approach
Phys. Rev. B 79, 195405 (2009)
- T. Olsen, J. Gavnholt and J. Schiøtz
Hot-electron-mediated desorption rates calculated from excited-state potential energy surfaces
Phys. Rev. B 79, 035403 (2009)
- J. Gavnholt, T. Olsen, M. Engelund and J. Schiøtz
Delta self-consistent field method to obtain potential energy surfaces of excited molecules on surfaces
Phys. Rev. B 78, 075441 (2008)
Old Projects
Ph.D. thesis on theoretical models for non-adiabatic dynamics at metal surfaces
Master thesis on string theory and the AdS/CFT-correspondence.
A popular Danish review of subject was published in Gamma 145 and can be found here.
Bachelor project on double resonance spectroscopy and the hyperfine spectrum of cesium.