Results 31 to 40 of about 28,479 (266)
Quantum transport in ferromagnetic permalloy nanostructures [PDF]
Physical Review B, 2008 We studied phase coherent phenomena in mesoscopic Permalloy samples by exploring low temperature transport. Both, differential conductance as a function of bias voltage and magnetoconductance of individual wires display conductance fluctuations. Analysis of these fluctuations yields a phase coherence length of $\sim250$ nm at 25 mK as well as a $1 ...
Neumaier, Daniel +3 more
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Geometry effects in topologically confined bilayer graphene loops
New Journal of Physics, 2021 We investigate the electronic confinement in bilayer graphene by topological loops of different shapes. These loops are created by lateral gates acting via gap inversion on the two graphene sheets. For large-area loops the spectrum is well described by a
Nassima Benchtaber +2 more
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Quantum Networks: Dynamics of Open Nanostructures [PDF]
VLSI Design, 1998 The superposition principle makes quantum networks behave very differently from their classical counterparts: We discuss how local and non‐local coherence are generated and how these may affect the function of composite systems. Numerical examples concern quantum trajectories, quantum noise and quantum parallelism.
Günter Mahler, Rainer Wawer
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Complex Nanostructures by Pulsed Droplet Epitaxy
Nanomaterials and Nanotechnology, 2011 What makes three dimensional semiconductor quantum nanostructures so attractive is the possibility to tune their electronic properties by careful design of their size and composition. These parameters set the confinement potential of electrons and holes,
Noboyuki Koguchi +3 more
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Tunneling theory for a bilayer graphene quantum dot’s single- and two-electron states
New Journal of Physics, 2022 The tuneability and control of quantum nanostructures in two-dimensional materials offer promising perspectives for their use in future electronics. It is hence necessary to analyze quantum transport in such nanostructures.
Angelika Knothe +2 more
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Quantum confinement in Si and Ge nanostructures [PDF]
Journal of Applied Physics, 2012 We apply perturbative effective mass theory as a broadly applicable theoretical model for quantum confinement (QC) in all Si and Ge nanostructures including quantum wells (QWs), wires (Q-wires), and dots (QDs). Within the limits of strong, medium, and weak QC, valence and conduction band edge energy levels (VBM and CBM) were calculated as a function of
Barbagiovanni, E. G. +3 more
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AIP Advances, 2016 We develop a theory of original quantum mechanism for finding strong optical activity quantum optical system in three-level non-chiral nanostructures, where symmetrical incidence (the propagation of the incident light is vertical to the plane of ...
Shifang Guo
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Recent Advances in Si-Compatible Nanostructured Photodetectors
Technologies, 2023 In this review the latest advances in the field of nanostructured photodetectors are considered, stating the types and materials, and highlighting the features of operation. Special attention is paid to the group-IV material photodetectors, including Ge,
Rahaf Douhan +5 more
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Extending the time of coherent optical response in ensemble of singly-charged InGaAs quantum dots
Communications Physics, 2022 Semiconductor nanostructures are central to the implementation of quantum communication and information technologies. The authors leveraged spin degrees of freedom in quantum dot ensembles to increase optical coherence timescales, thereby disclosing ...
Alexander N. Kosarev +12 more
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Quantum Transport in Semiconductor Nanostructures
, 1991 111 pages including 109 figures; this review from 1991 has retained much of its usefulness, but it was not yet available ...
Beenakker, C.W.J., Houten, H. van
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