1,212 research outputs found
Inhomogeneity Effects in Topological Superconductors
We have constructed a quasiclassical framework on superconductors with strong
spin-orbit couplings, applicable to CuxBi2Se3[Y. Nagai, H. Nakamura, and M.
Machida: arXiv:1305.3025]. The notable point is that in this framework the
Bogoliubov-de Gennes Hamiltonians with suggested odd-parity pairing states turn
to quasiclassical ones with usual spin-triplet Cooper pairs. Using this
quasiclassical theory, we can investigate inhomogeneity effects such as the
phenomena with vortices and surfaces in this superconductors and shed light on
the pairing state of topological superconductors. In this paper, we apply the
quasiclassical framework to the surface bound states with the Dirac-cone energy
dispersion originated from the topological invariant in the parent compound
Bi2Se3 in order to investigate the robustness of these bound states under the
superconducting order parameter. The odd-parity gap functions can not open on
the Dirac-cone-dispersion band in the Cu-doped BiSe superconductor.
We show that the massless Dirac quasiparticles originated from the normal-state
topological invariant and the Majorana quasiparticles coexist with each other
on the surface in the odd-parity topological superconductivity. Inhomogeneity
effects can be easily investigated with the use of our quasiclassical framework
in topological superconductors.Comment: 6 pages, 2 figures, submitted to SCES 2013 proceeding
The importance of threonine-301 from cytochromes P-450 (laurate (ω-1)-hydroxylase and testosterone 16α-hydroxylase) in substrate binding as demonstrated by site-directed mutagenesis
AbstractThreonine-301 from rabbit liver cytochromes P-450 (laurate (ω-1)-hydroxylase and testosterone 16α-hydroxylase) has been replaced by histidine via site-directed mutagenesis. In the oxidized state the mutant P-450s exhibited typical low-spin type absorption spectra of P-450 and their reduced CO complexes showed a Soret peak at 450 nm. However, no spectral change was induced on addition of substrates for their wild-type counterparts. The mutant P-450s were also completely devoid of the hydroxylase activity. These findings suggest that threonine-301, which is highly conserved in P-450s and located at the distal heme surface, plays an important role in substrate binding
Concept Design for Creating Essential Hypothesis, Rules, and Goals: Toward a Data Marketplace
The abductive reasoning model has been discussed in the context of business strategy. However, this model seems unrealistic for applications in the real business world considering the unpredictable, competitive business environment. This study improves the model by formulating an experimental case study through a web-based workplace for generating product ideas. We discuss the possible embodiment of product ideas as the basis for configuring features through the use of dynamic quality function deployment. The entire concept design process is proposed as a blueprint for building a data marketplace
Risk Factors for Wound Infection After Surgery for Colorectal Cancer: A Matched Case – Control Study
- …