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cond-mat.str-el2024
Robust analytic continuation using sparse modeling approach imposed by semi-positive definiteness for multi-orbital systems
Yuichi Motoyama, Hiroshi Shinaoka, Junya Otsuki +1
Analytic continuation (AC) from imaginary-time Green's function to spectral function is essential in the numerical analysis of dynamical properties in quantum many-body systems. Ho…
cond-mat.str-el2024★ 2 cited
Spin-Orbital Ordering in Alkali Superoxides
Kohei Shibata, Makoto Naka, Harald O. Jeschke +1
Akali superoxides AO2 (A=Na, K, Rb, Cs), due to an open p shell of the oxygen ion O2^- with degenerate pi orbitals, have spin and orbital degrees of freedom. The complex magnetic,…