2,037 research outputs found
Specific heat and low-lying excitations in the mixed state for a type II superconductor
Low temperature behavior of the electronic specific heat in the mixed
state is by the self-consistent calculation of the Eilenberger theory. In
addition to -term ( is a Sommerfeld coefficient), has
significant contribution of -term intrinsic in the vortex state. We
identify the origin of the -term as (i) V-shape density of states in the
vortex state and (ii) Kramer-Pesch effect of vortex core shrinking upon
lowering . These results both for full-gap and line node cases reveal that
the vortex core is a richer electronic structure beyond the normal core
picture.Comment: Accepted in Phys. Rev. B. 5 pages, 5 figure
Tunneling current in triplet f-wave superconductors with horizontal lines of nodes
We calculate the tunneling conductance spectra of a
normal-metal/insulator/triplet superconductor using the
Blonder-Tinkham-Klapwijk (BTK) formulation. Possible states for the
superconductor are considered with horizontal lines of nodes, breaking the time
reversal symmetry. These results would be useful to discriminate between
pairing states in superonductor SrRuO and also in UPt.Comment: 12 pages, 7 figure
Impurity and edge roughness scattering in armchair graphene nanoribbons: Boltzmann approach
The conductivity of armchair graphene nanoribbons in the presence of
short-range impurities and edge roughness is studied theoretically using the
Boltzmann transport equation for quasi-one-dimensional systems. As the number
of occupied subbands increases, the conductivity due to short-range impurities
converges towards the two-dimensional case. Calculations of the
magnetoconductivity confirm the edge-roughness-induced dips at cyclotron radii
close to the ribbon width suggested by the recent quantum simulations
Lateral distribution of high energy hadrons and gamma ray in air shower cores observed with emulsion chambers
A high energy event of a bundle of electrons, gamma rays and hadronic gamma rays in an air shower core were observed. The bundles were detected with an emulsion chamber with thickness of 15 cm lead. This air shower is estimated to be initiated with a proton with energy around 10 to the 17th power to 10 to the 18th power eV at an altitude of around 100 gmc/2. Lateral distributions of the electromagnetic component with energy above 2 TeV and also the hadronic component of energy above 6 TeV of this air shower core were determined. Particles in the bundle are produced with process of the development of the nuclear cascade, the primary energy of each interaction in the cascade which produces these particles is unknown. To know the primary energy dependence of transverse momentum, the average products of energy and distance for various average energies of secondary particles are studied
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