Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 5: Nickelates I
TT 5.3: Vortrag
Montag, 18. März 2024, 10:00–10:15, H 3007
Superconductivity in high-pressure La3Ni2O7 — •Pascal Reiss1, Minu Kim1, Runze Zhang1, Pascal Puphal1, Matthias Hepting1, Keita Masaki2, Kentaro Kitagawa2, Bernhard Keimer1, and Hidenori Takagi1,2,3 — 1Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany — 2Department of Physics, The University of Tokyo, Bunkyo, Tokyo, Japan — 3Institute for Functional Matter and Quantum Technologies, University of Stuttgart, Germany
The recent observation of high-temperature superconductivity in La3Ni2O7 under high pressures represents a remarkable discovery. However, superconductivity appears very fragile, and reports so far have differed greatly regarding the observation of a zero-resistance state, pressure range required, and the nature of the normal state.
In this talk, we will present our own high-pressure investigations of single crystal and powder La3Ni2O7 samples and we will discuss several implications regarding the nature of the superconducting phase.
Keywords: Superconductivity; Ruddlesden-Popper structure; High pressures