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Mats-Erik Pistol

Position:    Professor

E-mail:    mats-erik.pistol@ftf.lth.se
Phone:    +46 46 22220428
Cell phone:    +46 70 497 3504
Room:    Q144
Address:    Box 118
22100 Lund
      Sweden

University:    Lund University
Division:    Solid State Physics
Research Area(s):    Materials Science
Quantum Physics
Nanoelectronics- & photonics
Nanoenergy
Interests:    Spectroscopy of nanostructures, in particular photoluminescence. Theory of semiconductors, including manybody aspects.

 
ftf-mpi

Coordinator of the research area Nanoelectronics & Nanophotonics within NanoLund.

Teaching

Research

My research is presently divided into three parts.

i) Optical spectroscopy of individual nanostructures such as quantum wires and quantum dots. I am  mostly interested in the electronic structure of dots, which may be situated in wires. Nanowires can be textured along the wire axis as well as radially giving flexibility in the design of dots. Mostly photoluminescence is used although I prefer when a separate technique such as Raman scattering is performed on the same sample. Experiments are always compared with realistic calculations.

ii) Realistic calculations of the properties of semiconductor nanostructures. A large project has been finished where the basic electronic structure of essentially all combinations of wire and dot heterostructures have been calculated. The geometry was either core-shell wires, segmented wires or core-shell dots. This project was in collaboration with Prof. Craig Pryor, University of Iowa. We cannot only calculate the gross band-structure, we can also compute the detailed many-body states including up to six particles.

iii) Development of new techniques in manybody theory using functional analysis. This project concerns the characterisation of the set of pair densities that can arise from a wavefunction. Let us call this set P(N), where N is the number of particles considered. It is unknown how to recognise if a function belongs to P(N) but I have found a strong and easily computable constraint recently, which is presently being written up. I have previously found that P(N) is a convex set and I have also determined its boundary. I am also trying to improve k.p-theory, once again together with Prof. Craig Pryor.

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