Regensburg 2013 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 54: Focused Session: Magnetism & Superconductivity in Fe-based Pnictides and Chalcogenides (jointly with MA)

TT 54.1: Hauptvortrag

Donnerstag, 14. März 2013, 09:30–10:00, H20

Fermiology and Order Parameter of Iron-based Superconductors from ARPES — •Sergey Borisenko — IFW Dresden

We use angle-resolved photoemission at ultra-low temperatures (1K-ARPES) to study iron-based superconductors. A number of materials from the 11, 111, 1111, 122, 245 and 1048 families have been studied. In some of them precise measurements of the superconducting gap as a function of momentum allow us to draw conclusions as for the structure and symmetry of the order parameter. In addition, we single out those details of the low-energy electronic structure which are necessary for the superconductivity itself.
[1] S. V. Borisenko et al., arXiv:1204.1316 (2012)
[2] S. V. Borisenko, Synchrotron Radiation News 25(5), 6 (2012)
[3] S. V. Borisenko et al., J. Vis. Exp. 68, e50129, DOI: 10.3791/50129 (2012)