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Showing 1 to 9 of 9 for “"Aharonov-Bohm effect"”.
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Properties of Type-II ZnTe/ZnSe Submonolayer Quantum Dots Studied via Excitonic Aharonov-Bohm Effect and Polarized Optical Spectroscopy
… magneto-photoluminescence, including excitonic Aharonov-Bohm (AB) effect and polarized optical spectroscopy as the primary tools in this work.</p> <p>I present previous studies as well as the background of optical and magneto-optical processes in semiconductor nanostructures and introduce the …
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On Quantum Effects of Vector Potentials and Generalizations of Functional Analysis
… dissertation in two parts. In the first one, the Aharonov-Bohm effect is investigated. It is shown that solenoids (or flux lines) can be seen as barriers for quantum charges. In particular, a charge can be trapped in a sector of a long cavity by two flux lines. Also, grids of flux lines can …
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QUANTUM TRANSPORT WITH COLD ATOMS
… gauge fields. We show that this so-called Aharonov-Bohm effect is absent for bosonic atoms. Within atomic Y-junctions, we find negative reflections that resemble Andreev-reflections known from metal-superconductor interfaces. Further, we show that topological pumping within atomic ring …
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A nanofabricated amplitude-division electron interferometer in a transmission electron microscope
… reconstruction, and demonstration of the Aharonov-Bohm effect. However, wavefront-division interferometry is limited by the requirement of high source coherence. Amplitude-division electron interferometers, first demonstrated by Marton and co-workers in 1954, can overcome this limitation. …
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Novel electromagnetic scattering phenomena
… fields enables us to observe the non-Abelian Aharonov-Bohm effect with classical waves and classical fluxes, relevant for classical and quantum topological phenomena.
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Spin-orbit or Aharonov-Casher edge states in semiconductor systems
We present studies of edge states induced by the Aharonov-Casher vector potential or Rashba-type spin-orbit interaction using quantum transport in InGaAs/InAlAs herterostructures. The Aharonov-Casher effect is electromagnetically dual to the Aharonov-Bohm effect and is predicted to lead to edge …
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Quantum transport theory of 3D time-reversal invariant topological insulators
… be elegantly written in terms of a low-energy effective momentum-space Hamiltonian, but analytic methods quickly become intractable in multifarious systems and disordered heterostructures which in general lack translational invariance, as momentum is no longer a good quantum number. …
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Investigating electron transport in chemical vapor deposition graphene nanostructures
… and passivating high quality CVD graphene field effect transistors (FETs), and electron scattering processes are explored by studying electrical characterisation and magnetotransport phenomena in encapsulated CVD AB stack and large twist angle (30◦) bilayer graphene FETs, as well as monolayer …
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Experimental Observation of Geometric Phases in Narrow-Gap Semiconductor Heterostructures
… semiconductor (NGS) heterostructures. The low effective-mass electrons in NGS heterostructures enable observation of delicate quantum phases; and the strong spin-orbit interaction (SOI) in the systems gives us means by which we can manipulate the quantum-mechanical spin of these electrons …