نتایج جستجو برای: fermi surface
تعداد نتایج: 652710 فیلتر نتایج به سال:
We report on a field-induced change of the electronic band structure of CeBiPt as evidenced by electrical-transport measurements in pulsed magnetic fields. Above approximately 25 T, the charge-carrier concentration increases nearly 30% with a concomitant disappearance of the Shubnikov-de Haas signal. These features are intimately related to the Ce 4f electrons since for the non-4f compound LaBi...
The Fermi surface of rare-earth tritellurides sRTe3d is investigated in terms of the nesting-driven chargedensity wave formation using positron annihilation and first-principles linear muffin-tin orbital calculations. Fermi surface nesting is revealed as a strong candidate for driving charge-density wave formation in these compounds. The nesting vector obtained from positron annihilation experi...
We perform charge self-consistent density functional theory combined with dynamical mean field theory calculations to study correlation effects on the Fermi surfaces of the iron pnictide superconductors LaFePO and LiFeP. We find a distinctive change in the topology of the Fermi surface in both compounds where a hole pocket with Fe d(z(2)) orbital character changes its geometry from a closed sha...
We discuss the low-temperature behavior of the electronic self-energy in the vicinity of a ferromagnetic instability in two dimensions within the twoparticle self-consistent approximation, functional renormalization group and Ward-identity approaches. Although the long-range magnetic order is absent at T > 0, the self-energy has a non-Fermi liquid form at low energies |ω| . ∆0 near the Fermi le...
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