نتایج جستجو برای: fermi dirac integral
تعداد نتایج: 153254 فیلتر نتایج به سال:
We performed an angle-resolved photoemission spectroscopy study of BaFe2As2, which is the parent compound of the so-called 122 phase of the iron-pnictide high-temperature superconductors. We reveal the existence of a Dirac cone in the electronic structure of this material below the spin-density-wave temperature, which is responsible for small spots of high photoemission intensity at the Fermi l...
In this paper we introduce the fractional dark energy model, in which accelerated expansion of Universe is driven by a nonrelativistic gas (composed either fermions or bosons) with noncanonical kinetic term. The inversely proportional to cube absolute value momentum for fluid an equation state parameter equal minus one, and whose corresponding density mimics one cosmological constant. general c...
A Dirac-Fermi liquid (DFL)--a doped system with Dirac spectrum--is an important example of a non-Galilean-invariant Fermi (FL). Real-life realizations DFL include, e.g., graphene, surface states three-dimensional (3D) topological insulators, and 3D Dirac/Weyl metals. We study the optical conductivity arising from intraband electron-electron scattering. It is shown that effective current relaxat...
The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We discuss a non-Fermi liquid gapless metallic surface state of the topological band insulator. It has an odd number of gapless Dirac fermions coupled to a noncompact Uð1Þ gauge field. This can be viewed as a vortex dual to the conventional Dirac fermion surface state. This sur...
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