نتایج جستجو برای: magnetic nanowire
تعداد نتایج: 347198 فیلتر نتایج به سال:
Topological superconductivity is a state of matter that can host Majorana modes, the building blocks of a topological quantum computer. Many experimental platforms predicted to show such a topological state rely on proximity-induced superconductivity. However, accessing the topological properties requires an induced hard superconducting gap, which is challenging to achieve for most material sys...
Semiconductor-superconductor hybrid systems are promising candidates for the realization Majorana fermions and topological order, i.e. topologically protected degeneracies, in solid state devices. We show that the topological order is mirrored in the excitation spectra and can be observed in nonlinear Coulomb blockade transport through a ring-shaped nanowire. Especially, the excitation spectrum...
We study the band structure of semiconductor nanowires with quantum dots embedded in them. The is calculated using Rayleigh–Ritz variational method. consider two different types, one type defined by electrostatic potentials applied to nanowire, while other adding materials offsets respect parameters nanowire. are particularly interested appearance discrete energy levels gap between conduction a...
We analyze the confinement of electronic surface states in a model topological insulator nanowire. Spin-momentum locking reduces unwanted backscattering presence nonmagnetic disorder and is known to counteract localization for certain values magnetic flux threading wire. show that intentional can be induced range conditions nanowire constriction. propose geometry involves two constrictions thes...
We use the $\mathbf{k} \cdot \mathbf{p}$ theory and envelope function approach to evaluate Rashba spin-orbit coupling induced in a semiconductor nanowire by magnetic field at different orientations, taking explicitely into account prismatic symmetry of typical nano-crystals. make case for strongly spin-orbit-coupled InAs nanowires investigate anisotropy constant with respect direction. At suffi...
Co nanowires were fabricated onto the nanoporous aluminum oxide arrays using ac electrodeposition technique. The influence of frequency and pH on the magnetic properties and crystal structure of symmetric (18-18 V) and non-symmetric (18-12 V) electrodeposited Co nanowires was investigated. A direct relation was seen between saturation magnetization, squareness and coercivity of the samples prep...
We investigate the transport properties of topological insulator (TI) Bi0.83Sb0.17 nanowires. Single-crystal nanowire samples with diameters ranging from 75 nm to 1.1 μm are prepared using high frequency liquid phase casting in a glass capillary; cylindrical single crystals with (101̄1) orientation along the wire axis are produced. Bi0.83Sb0.17 is a narrow-gap semiconductor with an energy gap at...
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