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91 papers
Ratio of kinetic and potential energy of Kepler motion
Manfred Bucher
Recently it was shown that the ratio of kinetic and potential energy at the perihelion of a Kepler orbit relates to the ellipse eccentricity. Here, a general expression for the tha…
Why are stripes in LaSrCuO rotated by ?
Manfred Bucher
The rotated stripes are a consequence of the orthorhombic crystal lattice and the isotropy of Coulomb repulsion between pairs of doped holes, residing at oxygen lattice sites. With…
Comment on the thermal Hall effect in cuprates
Manfred Bucher
Insights from stripe incommensurabilities and antiferromagnetic stability indicate that the magnetic moments of both host Cu^2+ ions and Cu atoms from electron doping support the t…
Comment on "An algebra and trigonometry-based proof of Kepler's first law" by Akarsh Simha, arXiv:2111.08447v1
Manfred Bucher
The recent non-calculus proof of Kepler's first law succeeds because of an obscure, but valid property of the ellipse.
Retrograde doping dependence of charge order in LaEuSrCuO
Manfred Bucher
Comparison with LaNdSrCuO () shows that the retrograde doping dependence of charge order in LaEuSrCuO must be caused by a…
A simple model of the strange-metal phase in cuprates
Manfred Bucher
Hole doping of superconducting cuprates generates lattice defects of O atoms. At and beyond closing of the pseudogap, p =< p*, they form a highly symmetric superlattice. Umklapp pr…