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Research Group Gabriel Bester

bester
Contact:
Prof. Dr. Gabriel Bester
Universität Hamburg
Grindelallee 117
20146 Hamburg
E-Mail: gabriel.bester@chemie.uni-hamburg.de
Web: www.chemie.uni-hamburg.de/pc/bester/index.html

Open Positions: PhD and PostDoc positions

 

Research in my group is focussed on the development and the application of numerical techniques to investigate the quantum mechanical properties of nanoscopic systems. Carriers trapped within such structures exhibit strong quantum mechanical effects that are of fundamental interest to understand the properties of matter. Moreover, their unique properties can be exploited in the realm of nanotechnology. Our task is to develop theoretical concepts, implement them into computational methods and interpret experimental results; or provide genuine predictions.

Our theoretical description is based on ab-initio methods, where we describe the nanostructures atom by atom. This atomistic description allows us to accurately describe colloidal semiconductor clusters, made of a few hundred atoms, all the way to epitaxial quantum dots made of millions of atoms. Our calculations of correlated many-body wave functions lead to accurate optical properties. These are relevant in the modern fields of quantum information science and solid-state quantum optics.

Publication List:

93 A light-hole exciton in a quantum dot
Yongheng Huo, Barbara J. Witek, Santosh Kumar, Jairo Ricardo Cárdenas, Jiaxiang Zhang, Nika Akopian, Ranber Singh, Eugenio Zallo, Raphael Grifone, Dominik Kriegner, Rinaldo Trotta, Fei Ding, Julian Stangl, Val Zwiller, Gabriel Bester, Armando Rastelli, Oliver G. Schmidt
Nature Physics 10, 46-51 (2014)
92 Direct Quantitative Electrical Measurement of Many-Body Interactions in Exciton Complexes in InAs Quantum Dots
Patrick A. Labud, Arne Ludwig, Andreas D. Wieck, Gabriel Bester, Dirk Reuter
Physical Review Letters 112, 046803 (2014)

2013
91 Vibron-vibron coupling from ab initio molecular dynamics simulations of a silicon cluster
Peng Han, Linas Vilciauskas, Gabriel Bester
New Journal of Physics 15, 043039 (2013)
Reprint: e-Print Archive, arXiv:1301.6912v1 (2013)
90 Electronic and optical properties of ZnO quantum dots under hydrostatic pressure
Zaiping Zeng, Christos S. Garoufalis, Sotirios Baskoutas, Gabriel Bester
Physical Review B: Condensed Matter and Materials Physics 87, 125302/1-125302/7 (2013)
89 Electronic and optical properties of strained InxGa1-xAs/GaAs and strain-free GaAs/Al0.3Ga0.7As quantum dots on (110) substrates
Ranber Singh, Gabriel Bester
Physical Review B: Condensed Matter and Materials Physics 88, 075430/1-075430/6 (2013)
88 Nonlinear piezoelectricity in wurtzite semiconductors
Pierre-Yves Prodhomme, Annie Beya-Wakata, Gabriel Bester
Physical Review B: Condensed Matter and Materials Physics 88, 121304/1-121304/4 (2013)
87 Large nuclear zero-point motion effect in semiconductor nanoclusters
Peng Han, Gabriel Bester
Physical Review B: Condensed Matter and Materials Physics 88, 165311/1-165311/7 (2013)
86 First principles molecular dynamics study of proton dynamics and transport in phosphoric acid/imidazole (2:1) system
Linas Vilciauskas, Mark E. Tuckerman, Jan P. Melchior, Gabriel Bester, Klaus-Dieter Kreuer
Solid State Ionics 252, 34-39 (2013)

 

Complete List