Results 11 to 20 of about 1,319,114 (288)

Spin phenomena in semiconductor quantum dots [PDF]

open access: yes, 2013
This thesis discusses development of new semiconductor quantum dot (QD) devices and materials. Optical spectroscopy of single QDs is employed in order to investigate electronic structure and magnetic properties of these materials.
Puebla Nunez, Jorge Luis
core   +6 more sources

Unconventional quantum Hall effect and Berry’s phase 2pi in bilayer graphene. [PDF]

open access: yes, 2006
There are known two distinct types of the integer quantum Hall effect. One is the conventional quantum Hall effect, characteristic of two-dimensional semiconductor systems, and the other is its relativistic counterpart recently observed in graphene ...
Novoselov, K. S.   +8 more
core   +5 more sources

Stacking-dependent band gap and quantum transport in trilayer graphene [PDF]

open access: yes, 2011
Graphene is an extraordinary two-dimensional (2D) system with chiral charge carriers and fascinating electronic, mechanical and thermal properties. In multilayer graphene, stacking order provides an important yet rarely explored degree of freedom for ...
Bockrath, M   +13 more
core   +5 more sources

Tunable Quantum Dots in Bilayer Graphene [PDF]

open access: yesNano Letters, 2007
5 pages, to appear in Nano ...
Milton Pereira, J.   +2 more
openaire   +4 more sources

Quantum Dot Behavior in Graphene Nanoconstrictions [PDF]

open access: yesNano Letters, 2009
published version: 24 pages, 9 figures (includes supplementary information)
Todd, Kathryn   +3 more
openaire   +3 more sources

Kondo effect and spin–orbit coupling in graphene quantum dots

open access: yesNature Communications, 2021
The Kondo effect has been observed in a variety of systems, including carbon nanotube quantum dots and graphene in the presence of impurities. Here, the authors report the observation of the Kondo effect in bilayer graphene quantum dots and study its ...
Annika Kurzmann   +14 more
doaj   +1 more source

Large terahertz electric dipole of a single graphene quantum dot

open access: yesPhysical Review Research, 2022
Graphene has recently emerged as an important material for optoelectronic applications owing to its unique properties. Here, we show that graphene is also appealing for the development of THz quantum optics when used for quantum dots.
Simon Messelot   +14 more
doaj   +1 more source

Interaction between Graphene Nanoribbon and an Array of QDs: Introducing Nano Grating

open access: yesPhotonics, 2022
In this work, the interaction between an array of QDs and Graphene nanoribbon is modeled using dipole–dipole interaction. Then, based on the presented model, we study the linear optical properties of the considered system and find that by changing the ...
Sahar Armaghani   +2 more
doaj   +1 more source

Graphene Quantum Dots Modified with Metformin/Co(II) as Efficient Oxidation Catalyst [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
While one of the valuable approaches to obtaining a heterogeneous catalyst is supporting them on a high surface area supports, the strategy mainly suffers from the low number of chelating agents on most of the supports to grip the metal cations catalysts.
Saeid Nejati   +2 more
doaj   +1 more source

Fluorescent Quantum Dots and Its Composites for Highly Sensitive Detection of Heavy Metal Ions and Pesticide Residues: A Review

open access: yesChemosensors, 2023
Quantum dots nanomaterials have attracted extensive interest for fluorescence chemical sensors due their attributes, such as excellent optical characteristics, quantum size effects, interface effects, etc. Moreover, the fluorescence properties of quantum
Zhezhe Wang   +4 more
doaj   +1 more source

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