Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 3: Superconductivity: Properties and Electronic Structure I
TT 3.9: Vortrag
Montag, 12. März 2018, 11:45–12:00, H 0110
Is there a relation between Tc,max and the superexchange strength J? — •Silvia Müllner1, Dirk Wulferding1,2, Peter Lemmens1,2, Meny Shay3, Gil Drachuck3, Wayne Crump4, Jeff Tallon4, and Amit Keren3 — 1IPKM, TU-BS, Braunschweig, Germany — 2LENA, TU-BS, Braunschweig, Germany — 3Phys. Dep., Technion Haifa, Israel — 4RRI, Victoria Univ., New Zealand
Using Raman scattering the magnetic superexchange strength J can be directly determined via two-magnon scattering. Two earlier Raman scattering investigations on HTSC have shown contradicting relations between J and Tc,max. We present new Raman scattering results of various RE123 HTSC with different J and their relation with Tc,max.
Work supported by GIF 1171-486 189.14/2011.
Wulferding, et al., PRB 90, 104511 (2014).
Tallon, PRB 90, 214523 (2014).
Ellis, et al., PRB 92, 104507 (2015).