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8 papers · 2 filters
From chessboard of bipolarons of size 4a in cubic La7/8Sr1/8MnO3 to stripes of the same bipolarons in layered high Tc cuprates
Martine Hennion, Alexandre Ivanov, Claudine Lacroix +1
The compound La1-xSrxMnO3 exhibits a charge order (CO) state at and , which recalls the CO state with a decrease in the temperature of the superconducting…
Robustness of flat band superconductivity against disorder in a two-dimensional Lieb lattice model
Georges Bouzerar, Maxime Thumin
Recently, the possibility of high-temperature superconductivity (SC) in flat-band (FB) systems has been the focus of a great deal of activity. This study reveals that unlike conven…
Fast track to the overdoped regime of superconducting YBa2Cu3O7-δ thin films via electrochemical oxidation
Alexander Stangl, Aiswarya Kethamkuzhi, Hervé Roussel +5
High temperature superconductors, especially YBaCuO (YBCO), are considered a key enabling technology towards a clean energy future. Hole doping in YBCO is a prerequ…
Oxygen incorporation in YBaCuO thin films: surface activation and degradation
Alexander Stangl, Xavier Obradors, Anna Palau +2
The oxygen off-stoichiometry plays a pivotal role for the physical properties of superconducting oxides. Yet, there is a lack of knowledge on the fundamental processes of oxygen in…
Crossing over from flat band superconductivity to conventional superconductivity
M. Thumin, G. Bouzerar
Over the past ten years, flat band (FB) or geometric superconductivity has become a major issue in condensed matter physics due to the significant technological benefits it could o…
Pressure and doping effects on the electronic structure and magnetism of the single-layer nickelate LaNiO
J. B. de Vaulx, F. Bernardini, V. Olevano +2
LaNiO is a prototypical member of the Ruddlesden-Popper nickelate series that offers a valuable reference point for elucidating the key ingredients behind the intriguing pr…