نتایج جستجو برای: fermi surface
تعداد نتایج: 652710 فیلتر نتایج به سال:
We present all-electron computations of the three-dimensional ~3D! Fermi surfaces ~FS’s! in Ba12xKxBiO3 for a number of different compositions based on the self-consistent Korringa-Kohn-Rostoker coherentpotential-approximation approach for incorporating the effects of Ba/K substitution. By assuming a simple cubic structure throughout the composition range, the evolution of the nesting and other...
Using perturbation theory and the field theoretical renormalization group approach we consider a two-dimensional anisotropic truncated Fermi Surface(FS) with both flat and curved sectors which approximately simulates the “cold” and “hot” spots in the cuprate superconductors. We calculate the one-particle two-loop irreducible functions Γ and Γ as well as the spin, the charge and pairing response...
We reconsider the problem of the anomalous Hall effect in ferromagnetic SrRuO3, incorporating insights from the recently developed theory of Weyl semimetals. We demonstrate that SrRuO3 possesses a large number of Weyl nodes, separated in momentum space, in its bandstructure. While the nodes normally do not coincide with the Fermi energy, unless the material is doped, we show that even the nodes...
We report the pressure-induced topological quantum phase transition of BiTeI single crystals using Shubnikov-de Haas oscillations of bulk Fermi surfaces. The sizes of the inner and the outer FSs of the Rashba-split bands exhibit opposite pressure dependence up to P = 3.35 GPa, indicating pressure-tunable Rashba effect. Above a critical pressure P ~ 2 GPa, the Shubnikov-de Haas frequency for the...
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