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Pseudogap in the chain states of YBCO
V. B. Zabolotnyy, A. A. Kordyuk, D. Evtushinsky +9
As established by scanning tunneling microscopy (STM) cleaved surfaces of the high temperature superconductor YBaCuO develop charge density wave (CDW) modulations i…
One-sign order parameter in iron based superconductor
S. V. Borisenko, V. B. Zabolotnyy, A. A. Kordyuk +5
The onset of superconductivity at the transition temperature is marked by the onset of order, which is characterized by an energy gap. Most models of the iron-based superconductors…
Electronic band structure of ferro-pnictide superconductors from ARPES experiment
A. A. Kordyuk, V. B. Zabolotnyy, D. V. Evtushinsky +3
ARPES experiments on iron based superconductors show that the differences between the measured and calculated electronic band structures look insignificant but can be crucial for u…
Comment on "A de Haas-van Alphen study of the Fermi surfaces of superconducting LiFeP and LiFeAs"
S. V. Borisenko, V. B. Zabolotnyy, D. V. Evtushinsky +4
In a recent preprint Putzke et al. argued that their dHvA data on LiFeAs are in good agreement with DFT calculations and contradict our ARPES results. Here we show that the situati…
Evidence for conventional superconductivity in SrPd2Ge2
T. K. Kim, A. N. Yaresko, V. B. Zabolotnyy +12
Electronic structure of SrPd2Ge2 single crystals is studied by angle-resolved photoemission spectroscopy (ARPES), scanning tunneling spectroscopy (STS) and band-structure calculati…
Fusion of bogoliubons in BaKFeAs and similarity of energy scales in high temperature superconductors
D. V. Evtushinsky, T. K. Kim, A. A. Kordyuk +10
Usually the superconducting pairing is considered to modify electronic states only in a narrow momentum range close to the Fermi surface. Here we present a direct experimental obse…