Berlin 2015 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 26: Functional Materials V: Functional Materials

MM 26.5: Vortrag

Dienstag, 17. März 2015, 12:45–13:00, TC 010

Bose Einstein Condensate observed in Koops-GranMat at RT — •Hans W.P. Koops — HaWilKo GmbH, Ober-Ramstadt, Germany

Giant current density is observed at room temperature in Koops-GranMat(R) with Pt- or Au-nanocrystals embedded in a fullerene matrix. The material is built with Focused Electron Beam Induced Processing. A field emission current up to 1mA was observed at 23 V ( Au/C) or 70 V (Pt/C). From an emission site of 10 nm in diameter, the current density reaches in both cases > 1.5 GA/cm2. In 2009 Koops explained the apparent electron-conduction with excitonic electron states in crystal surface orbitals which obey the Bohr Eigenvalue conditions for energy states. The electrons in these excitonic surface orbitals states have a wavelength of 2 nm. The excited excitonic states having a perimeter length of 5 lambda overlap and a Bose Einstein Condensate is formed. Here electrons and holes having parallel spins form Bosons, now named Koops-pairs, they occupy one level only, and show coherent electron emission. Mapping the system on a Bose-Hubbard phase-diagram suggests super-fluidity. The estimated critical temperature for Bose-Einstein-Condensation is higher than room temperature(300K).