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Accueil du site > Vie du laboratoire > Congrès / Colloques / Conférences > Optical Properties of Individual Nanowires and Quantum Dots in High Magnetic Field, Septembre 2014 > Programme du workshop

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Programme du workshop

 Tuesday 23rd

 18:00

 Registration & welcome at the LNCMI laboratory - 143 Avenue de Rangueil

 Wednesday 24th

 9 :00

 Registration& welcome G. Rikken and P. Christianen

 09:30

 Chair P. Christianen

 D. Ferrand "(Cd,Mn)Te magnetic quantum dots in core-shell nanowires" (abstract)

 10:00

 P. Wojnar "Spin splitting enhancement in ZnMnTe diluted magnetic nanowires" (abstract)

 10:30

 Coffee break

 11:00

 Chair A. Polimeni

 Y. Fontana" Magneto-photoluminescence on Quantum dot Emitters in Nanowire Shells : From a Fixed to a Tridimensional Perspective " (abstract)

 11:30

 L. Rigutti "Correlating structural and optical properties of III-nitride nanowire quantum structures at the single nano-object level" (abstract)

 12:00

  Lunch

 14:00

 Chair A. Patane

 P. Kossacki"New systems of quantum dot with single magnetic ion" abstract

 14:30

 O. Krebs "Magneto-optical properties of singly Mn-doped InAs/GaAs quantum dots" abstract

 15:00

 E. Chekhovich "Optically detected nuclear magnetic resonance in self-assembled quantum dots" abstract

 15:30

 Coffee break

 16:00

 Chair C. de Mello Donega

 D. Yakovlev"Spin dynamics of negative trions in ensemble of colloidal CdSe/CdS core/shell nanocrystals" (abstract)

 16:30

 A. Patane "Paramagnetic, Near-Infrared Fluorescent Mn-Doped PbS Colloidal Nanocrystals" (abstract)

 17:00

 Coffee break

 17:30 – 19 :30

 Poster session & beer and snacks

Thursday 25th

 09:00

 Chair D. Yakovlev 

 A. Polimeni"Magneto-photoluminescence studies of III-V nanowires"(abstract)

 09:30

 P. Plochocka  "Unintentional high density p-type modulation doping of a GaAs/AlAs core-multi-shell nanowire" (abstract)

 10:00

 G. Goldoni  "Electronic properties of nanowire-based heterostructures : a mixed dimensionality system" (abstract)

 10:30

 Coffee break

 11:00

 Chair L. Rigutti 

 S. Plissard"Growth and Characterization of InSb nanostructures" (abstract)

 11:30

 S. Roddaro "Stark effect control of the energy spectrum of single and multiple quantum dots in InAs/InP nanowires." (abstract)

 12:00

 H. Joyce "Terahertz conductivity measurements of semiconductor nanowires"(abstract)

 12:30

  Lunch

 15:00

 Chair L. Biadala 

 F. Delpech"Reaction chemistry/optical property relations : the special case of metal phosphides" (abstract)

 15:30

 P. Reiss "Chemical synthesis of greener semiconductor quantum dots and Si nanowires " (abstract)

 16:00

 Coffee break

 16:30 – 18 :00

 lab tour

 Friday 26th

 09:00

 Chair P. Kossacki 

 C. Delerue "From semiconductor nanocrystals to artificial graphene and topological insulators" abstract

 09:30

 C. de Mello Donega "Colloidal Semiconductor Nanocrystals : New Materials for Tailoring Nanoscale Excitons" (abstract)

 10:00

 Coffee break

 10:30

 Chair P. Reiss 

 A. Granados del Aguila"Observation of the full exciton and phonon fine-structure in CdSe/CdS dot-in-rod heteronanocrystals" (abstract)

 11:00

 L. Biadala "Spin dynamics in CdSe-based colloidal nanostructures" (abstract)

 

 11:30

 closings Peter Christianen

 12:00 – 14 :00

 lunch

 

Magneto-photoluminescence on Quantum Dot Emitters in Nanowire Shells : From a Fixed to a Tridimensional Perspective

Y. Fontana1,P. Corfdir2,B. Van Hattem2,E. Russo-Averchi1,M. Heiss1,S. Sonderegger3,C. Magen4,J. Arbiol5,R. T. Phillips2, and A. Fontcuberta i Morral1 1Laboratoire des Materiaux Semiconducteurs, École Polytechnique Fédérale de Lausanne, Switzerland.2Cavendish Laboratory, University of Cambridge, United Kingdom. 3Attolight AG, Switzerland. 4Laboratorio de Microscopias Avanzadas - Instituto de Nanocienciade Aragon and Departamento de Fisica de la Materia Condensada,Universidad de Zaragoza, (...)

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(Cd,Mn)Te quantum dots in core-shell nanowires

A. Artiolia, P. Rueda-Fonsecaa,b, T. Cremelb, E. Bellet-Amalricb, M. Den Hertoga, C. Bougerola, Y. Genuista, J.-F. Mottea, F. Donatinia, R. Andréa, K. Khengb, J. Bleuseb, E. Robinb, S. Tatarenkoa, D. Ferranda*, and J. Ciberta aUniv. Grenoble Alpes, Inst. NEEL, Grenoble, & CNRS, Inst. NEEL, F-38000 Grenoble, France bUniv. Grenoble Alpes, INAC, Grenoble, & CEA, INAC, F 38054 Grenoble, France * david.ferrand@neel.cnrs.fr Confinement effects are known to enhance the stability (...)

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Abstract : Correlating structural and optical properties of III-nitride nanowire quantum structures at the single nano-object level

Correlating structural and optical properties of III-nitride nanowire quantum structures at the single nano-object level L. Rigutti1, I. Blum1, L. Mancini1, D. Shinde1, D. Hernandez Maldonado1, W. Lefebvre1, J. Houard1, A. Vella1, F. Vurpillot1, B.Deconihout1,G. Jacopin2,3,M. Tchernycheva2, C. Durand4, J. Eymery4, R. Songmuang5, L.F. Zagonel6,7, M. Kociak6 1Groupe de Physique des Matériaux, UMR CNRS 6634, University and INSA of Rouen, Normandie University, 76800 St. Etienne du Rouvray, (...)

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Abstract : Electronic properties of nanowire-based heterostructures : a mixed dimensionality system

Electronic properties of nanowire-based heterostructures : a mixed dimensionality system. Free-standing nanowires laterally overgrown by multilayers constitute a flexible new class of nanostructures, offering the possibility to engineer quantum states in the radial direction, while using the extended axis for facile transport and device integration. Radial heterostructures inherit the polygonal symmetry of the underlying nanowire substrate, inducing the formation of coexisting, coupled (...)

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Abstract : Chemical synthesis of greener semiconductor quantum dots and Si nanowires

« Chemical synthesis of greener semiconductor quantum dots and Si nanowires » P. Reiss Abstract : Colloidal semiconductor nanocrystals (quantum dots) have been investigated for more than 30 years now, since the discovery of the quantum confinement effect in the early 1980s. Motivated by the possibility of adjusting the optical and electronic properties of quantum dots with size, the field progressed through the close synergy between chemistry and physics. In particular, several (...)

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Abstract : Reaction chemistry/optical property relations : the special case of metal phosphides

Reaction chemistry/optical property relations : the special case of metal phosphides F. Delpech The synthesis of colloidal semiconductor nanocrystals has been under investigation for more than 30 years. A high degree of size and shape control has been achieved with selected material−shape combinations (e.g. II-VI and IV-VI materials). CdSe is the prime example of these achievements with the preparation of size-controlled 0D, 1D, 2D and 3D nanostructures with controlled optical (...)

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Abstract : Terahertz conductivity measurements of semiconductor nanowires

Terahertz conductivity measurements of semiconductor nanowires Hannah J. Joycea, Patrick Parkinsonb, Callum J. Dochertyb, Nian Jiangc, Jennifer Wong-Leungc, Qiang Gaoc, H. Hoe Tanc, C. Jagadishc, Laura M. Herzb, and Michael B. Johnstonb aDepartment of Engineering, University of Cambridge, Centre for Advanced Photonics and Electronics, Cambridge CB3 0FA, United Kingdom bDepartment of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom (...)

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Abstract : Magneto-photoluminescence studies of wurtzite III-V nanowires

Magneto-photoluminescence studies of wurtzite III-V nanowires A.Polimeni Dipartimento di Fisica, Sapienza Università di Roma, Roma, Italy The possibility of growing semiconductor nanowires (NWs) in the zincblende (ZB) and/or wurtzite (WZ) crystal phase widens the potential applications of these nanostructures. This is particularly true in technologically relevant III-V compounds, such as GaAs, InAs, and InP, for which WZ is not available in bulk form. Although the WZ band structure (...)

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Abstract : Spin dynamics in CdSe-based colloidal nanostructures.

Spin dynamics in CdSe-based colloidal nanostructures. L. Biadala In the past few years, the number of applications involving colloidal nanostructures (NS) has increased dramatically. Among the plethora of colloidal core/shell NS, CdSe-based heterostructures have attracted more attention due to the high master degree their colloidal synthesis. Indeed these nanocrystals are routinely used in display screens as well as very promising in solar cells as light concentrator. Besides these (...)

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Spin dynamics of negative trions in ensemble of colloidal CdSe/CdS core/shell nanocrystals

Spin dynamics of negative trions in ensemble of colloidal CdSe/CdS core/shell nanocrystals D. R. Yakovlev1,2, F. Liu1, A. V. Rodina2, L. Biadala1,3, D. Dunker1, C. Javaux4, J.-P. Hermier3, Al. L. Efros5, B. Dubertret4 and M. Bayer1 1TU Dortmund University, 44221 Dortmund, Germany 2Ioffe Physical Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia 3Universitie de (...)

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Abstract : Spin splitting enhancement in ZnMnTe diluted magnetic nanowires

Spin splitting enhancement in ZnMnTe diluted magnetic nanowires P. Wojnar1*, E. Janik1,2 , J. Suffczyński2, J. Papierska 2, P. Kossacki 2, M. Szymura1, W. Zaleszczyk, S. Kret1 Ł. Kłopotowski1, T. Wojciechowski1, L. T. Baczewski1, G. Karczewski1, T. Wojtowicz1, J. Kossut1 1 Institute of Physics, Polish Academy of Sciences, Al Lotników 32/46, 02-668 Warsaw, Poland 2Institute of Experimental Physics, University Warsaw, ul Hoża 69, 00-681 Warsaw, Poland Incorporation of transition (...)

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Abstract : Unintentional high density p-type modulation doping of a GaAs/AlAs core-multi-shell nanowire

P. Plochocka, J. Jadczak, A. Mitioglu, I. Breslavetz, M. Royo, A. Bertoni, G. Goldoni, T. Smolenski, P. Kossacki, A. Kretinin, Hadas Shtrikman, and D. K. Maude Achieving significant doping in GaAs/AlAs core/shell nanowires (NWs) is of considerable technological importance but remains a challenge due to the amphoteric behavior of the dopant atoms. Here we show that placing a narrow GaAs quantum well in the AlAs shell effectively getters residual carbon acceptors leading to (...)

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Abstract : Stark effect control of the energy spectrum of single and multiple quantum dots in InAs/InP nanowires

The control of orbital and spin state of single electrons is a key ingredient for spintronics and for the design novel detectors. Coulomb blockade provides a practical tool to manipulate single carriers and scaling is bringing single-electron devices ever closer to non-cryogenic applications. In double dots - the solid-state equivalent of bi-atomic molecules - advanced single-spin manipulations become possible thanks to Pauli spin blockade (SB). In my presentation, I shall review how (...)

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Abstract : Paramagnetic, fluorescent Mn-doped PbS colloidal nanocrystals

L. Turyanskaa, F. Moroa, A. N. Knotta, M. W. Faya, T.D. Bradshawa, H. Faasa, R.J.A. Hill, N.R. Thomasa, P. Clarkea, A. Meaneyb, P.C.M. Christianenb, M. Lic, S. Mannc, A. Patanèa a, School of Physics and Astronomy, School of Chemistry, School of Pharmacy, School of Medicine, Nottingham Nanotechnology and Nanoscience Centre, The University of Nottingham, Nottingham NG7 2RD, UK. b. HFML, Radboud University, Nijmegen 6525 ED, The Netherlands. c. School of Chemistry, University of (...)

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Abstract : Observation of the full exciton and phonon fine-structure in CdSe/CdS dot-in-rod hetero-nanocrystals

A. Granados del Águila,1 B. Jha,1 F. Pietra,2 C.de Mello Donegá,2 J.C.Maan1, D. Vanmaekelbergh2 and P.C.M. Christianen*1 1High Field Magnet Laboratory, Radboud University Nijmegen, the Netherlands 2Condensed Matter and Interfaces, Debye Institute, Utrecht University, the Netherlands E-mail : P.Christianen@science.ru.nl Semiconductor colloidal nanocrystals (NCs) exhibit very efficient light emission that can be tuned in wavelength by varying their size, composition and shape. The (...)

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Colloidal semiconductor nanocrystals : new materials for tailoring nanoscale excitons

C. de Mello Donegá Debye Institute for Nanomaterials Science, Utrecht University Colloidal semiconductor nanocrystals (NCs) are a versatile class of nanomaterials, whose properties are determined by their size, shape, and composition. Moreover, colloidal NCs are coated with a layer of organic ligand molecules, which further extends their functionality, since it allows for easy surface manipulation and solution processing. Colloidal semiconductor NCs comprising two (or more) different (...)

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Abstract : Magneto-optical properties of singly Mn-doped InAs/GaAs quantum dots

Self-assembled semiconductor quantum dots (QDs) made of InGaAs in GaAs and doped by a single manganese (Mn) atom, a shallow acceptor in InGaAs material, provide the remarkable possibility to optically probe at the few-spin level the exchange interactions between the Mn 3d5 electrons, its bound hole, and the QD-confined carriers (electron or hole). In the last 5 years, they have been explored in great details, with the help of of an external magnetic field and by using high-resolution (...)

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Abstract : From semiconductor nanocrystals to artificial graphene and topological insulators

E. Kalesaki1,2, C. Delerue1, C. Morais Smith3, W. Beugeling3,4, G. Allan1, D. Vanmaekelbergh5 1 IEMN – Département ISEN, UMR CNRS 8520, 59046 Lille, France 2 Physics and Materials Science Research Unit, University of Luxembourg, 162a avenue de la Faïencerie L-1511 Luxembourg, Luxembourg 3 Institute for Theoretical Physics, University of Utrecht, 3584 CE Utrecht, Netherlands 4 Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany. 5 Debye (...)

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Abstract : Optically detected nuclear magnetic resonance in self-assembled quantum dots

Evgeny A. Chekhovich Department of Physics and Astronomy, University of Sheffield, Sheffield, S3 7RH Quantum dots in III-V semiconductors have various favourable properties for applications in quantum information technologies, including strong coupling with light offering excellent optical interfacing, ultrafast coherent manipulation and advanced manufacturing technologies. However, all group III and V atoms have nonzero nuclear spins. Thus instead of a two-level qubit system, the (...)

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Abstract : New systems of quantum dot with single magnetic ion

P. Kossacki, T. Smoleński, J. Kobak, M. Goryca, M. Papaj, K. Gietka, A. Bogucki, M. Koperski, J.-G. Rousset, J. Suffczyński, E. Janik, M. Nawrocki, A. Golnik, W. Pacuski Institute of Experimental Physics, Faculty of Physics, University of Warsaw, ul. Hoża 69, 00-681 Warsaw, Poland In this work we will present spectroscopic studies of new systems of quantum dots with single magnetic ions. We will report on the first optical observation of individual cobalt ion in a CdTe/ZnTe quantum (...)

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Abstract : Growth and Characterization of InSb nanostructures

Growth and Characterization of InSb nanostructures S. Plissard, LAAS-CNRS, Toulouse Signatures of Majorana fermions have recently been reported in an InSb single - nanowire device [1,2]. In order to prove the non-abelian properties of Majorana fermions, it is necessary to perform logical operations by interchanging the positions of the two Majoranas [3]. This is not possible in a single InSb nanowire ; Majorana fermion is its own antiparticle so when two Majoranas meet they (...)

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