On the trail of high temperature superconductors

One group at the Institute for Space Systems (IRS) headed by Prof. Hans-Peter Roeser in collaboration with international partners have established a link between crystal structures of high temperature superconductors (HTSC) and their critical transition temperatures Tc.
Scientists from the IRS determined the relationship between critical temperature Tc and doping density of the crystal lattice allowing either Tc to be calculated from a known doping density, or optimal doping to be inferred for potentially higher Tc, for the first time.

All previous HTSCs investigated have critical temperatures that lie in the range of ~20 K < Tc < ~125 K - no matter whether the doping is excess electrons or deficient holes, all HTSCs fit within 1% of the line of correlation "It’s almost shocking how it all fits together", says Prof. Roeser, Managing Director, with a research backround in physics and astronomy.y.

Researching the topic at the IRS along with Prof. Dr. Roeser are Dr. Maria von Schoenermark, Dave T. Haslam, Santiago López, Marco Stepper, Florian Hetfleisch, Peter Leschinski, Andreas Moritz, Jürgen Vernerey and Artur Bohr.
Research activities at the IRS are sponsored by the Friedrich and Elisabeth Boysen Foundation. International partners include Prof. Felix Huber, Centre Director of DLR Oberfaffenhofen, Prof. Anahit Nikoghosyan of the Yerevan State University in Armenia and Michael Toberman from NASA Dryden Flight Research Centre.

An article on the topic is in August ‘09 issue of ‘Bild der Wissenschaft’ entitled ‘Auf der Ziel-Geraden’

Here you find publications on nano structure for THz frequencies (selection) & high temperature super conductors (HTSC)

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