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Ferromagnetism in armchair graphene nanoribbons
Due to the weak spin-orbit interaction and the peculiar relativistic dispersion in graphene, there are exciting proposals to build spin qubits in graphene nanoribbons with armchair boundaries.Expand
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Transport in quantum wells in the presence of interface roughness
The effective Hamiltonian for two-dimensional quantum wells with rough interfaces is formally derived. Two terms are generated. The first term is identified with local energy-level fluctuations, andExpand
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Ferromagnetism and quantum anomalous Hall effect in one-side-saturated buckled honeycomb lattices
The recently synthesized silicene as well as theoretically discussed germanene are examples of buckled honeycomb structures. The buckled structures allow one to manipulate asymmetry between twoExpand
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Effective tight-binding model for the iron-vacancy-ordered A y Fe 1.6 Se 2
We investigate the electronic structure of the ternary iron selenide K$_{y}$% Fe$_{1.6}$Se$_{2}$ by considering the spatial symmetry of the $\sqrt{5}% \times \sqrt{5}$ vacancy ordered structure.Expand
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Strain-induced superconducting pair density wave states in graphene
Graphene is known to be non-superconducting. However, surprising superconductivity is recently discovered in a flat-band in a twisted bi-layer graphene. Here we show that superconductivity can beExpand
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Effective potentials for folding proteins.
A coarse-grained off-lattice model that is not biased in any way to the native state is proposed to fold proteins. To predict the native structure in a reasonable time, the model has included theExpand
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Ground-state properties of nanographite systems with zigzag edges
A $\ensuremath{\pi}$-electron network in nanographite systems with zigzag edges exhibits strongly localized edge states, which are expected to have peculiar properties. We study effects ofExpand
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Resonant impurity band induced by point defects in graphene
It is pointed out that due to direct couplings of electronic states, point defects on graphene are strongly correlated and cannot be treated as independent scatters. In particular, for large on-siteExpand
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Enhanced surface mobility and quantum oscillations in topological insulator Bi1.5Sb0.5Te1.7Se1.3 nanoflakes
In this study, a series of Bi1.5Sb0.5Te1.7Se1.3 (BSTS) flakes 80-nm to 140-μm in thickness was fabricated to investigate their metallic surface states. We report the observation of surface-dominatedExpand
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