Some kind of homepage of




Dr. Johan M. Carlsson

Hi there!

You have just sneaked into Johan's place, an almost deserted place on the net. However, since you ended up here, you might be interested in who I am and I might as well take the opportunity to tell you something about myself. I am doctor in physics and I am presently working as postdoc at the Fritz-Haber-Institut der Max-Planck-Gesellschaft in Berlin, Germany. My present project concerns dehydrogenation of hydrocarbons.

Research

I did my PhD in the Solid state physics group under the supervision of Dr. Bo Hellsing. The solid state physics group belongs to the School of Physics and Engineering Physics which is connected to both Chalmers University of Technology and Göteborg University in Gothenburg, Sweden.

Dr. Bo Hellsing is leading the theoretical subgroup at Solid State Physics called The Interface Modeling Group (IMG). IMG studies the geometry and electron structure at complex interfaces like grain boundaries and thin adlayers on surfaces. I have been working on two different projects during my PhD-studies.

Grain boundaries in varistor materials

My main project is interfaces and surfaces in metal oxides and in particular grain boundary phenomena in poly crystalline Zinc oxide varistors. This investigation is based on first principles calculations of the electron structure in pure and doped grain boundaries in ZnO. I am in addition doing macroscopic simulations of the current flow through a poly crystalline varistor. This work is performed in close collaboration with Dr. Paul Bristowe and Helder S. Domingos in the Atomistic Simulation Group at the Department of Materials Science and Metallurgy at the University of Cambridge, UK.

Publications

Metallic Quantum Wells

I have also been working with a theoretical investigation of the Metallic quantum well system Na/Cu(111). The study determined the adsorption geometry, vibration modes and electron structure of submono- and monolayer coverage of Na on the Cu(111) surface. The calculations are based on first principles DFT-calculations using the GGA exchange-correlation functional together with a plane wave basis set and ultrasoft pseudopotentials. This study was performed in close collaboration with the experimental activity in the group.

Publications

Doctoral thesis



The title of my thesis is:

Johan M. Carlsson, A First-Principles Study of Interface Systems: Electronic properties of Metal Quantum Wells and Varistor materials, PhD-thesis, Göteborg University, Gothenburg, Sweden (2002).

I defended the thesis on Friday the 15:th of March 2002 and the picture above shows me when I nail it to the wall in the main building of Göteborg University. If you are interested in getting a closer look at my thesis than what you might get from the picture, you are most welcome to look at the Web version.


My present address is:
Abteilung Theorie
Fritz-Haber-Institut der Max-Planck-Gesellschaft
Faradayweg 4-6
D-14195 Berlin
Germany


This page is certainly not under construction. It is continuously developing, although the steps are discrete. By the way, the last step in any direction was taken 2002-12-05. In one sense, this page is the answer to the modern version of the Cartesian proof of existence:
"If you have a homepage, you do exist - at least in cyberspace" (Johannes Carolus, The yet unpublished, 1998-12-16)

As you probably already have understood, this is a personal homepage of Johan Carlsson why any coincidence of opinions to Chalmers or Göteborg university is purely accidental.