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TT: Fachverband Tiefe Temperaturen
TT 12: Poster Session Superconductivity
TT 12.36: Poster
Monday, March 11, 2013, 15:00–19:00, Poster D
STM/STS Study on Co-doped NaFeAs superconductor — •pranab kumar nag1, danny baumann1, ronny schlegel1, rico pohle1, martha scheffler1,2, torben hänke1, robert beck1, saicharan aswartham1, sabine wurmehl1, bernd büchner1,2, and christian hess1 — 1Institut für Festkörperforschung IFW Dresden, — 2Institut für Festkörperphysik TU Dresden
We have performed scanning tunneling microscopy/spectroscopy measurements on superconducting Co-doped NaFeAs as a function of temperature. After cleaving at low temperature and cryogenic vacuum we were able to investigate the electronic structure of the material by tunneling spectroscopy. The tunneling spectra (dI/dV) reveal several gap-like features near the Fermi level. We compare these result with recent data on LiFeAs.