Carbotronics

  

 

Funding scheme:

7th Framework Programme of the European Union (7FP EU)
Support for Training and Career Development of Researchers (Marie Curie)
Intra-European Fellowship (IEF)

Call identifier:

            FP7-PEOPLE-2007-2-1-IEF

Title:

Opto-electronic properties of graphene and other carbon nanostructures

Acronym:

            Carbotronics

Grant agreement:

            PIEF-GA-2008-221701

Duration:

            24 months (1 Sep 2008 – 31 Aug 2010)

Host:

            University of Cambridge
            Cavendish Laboratory (Department of Physics)
            Theory of Condensed Matter Group

Supervisor:

            Prof. Peter Littlewood, Head of Department

Researcher:

            Prof. Arkadiusz Wójs (arkadiusz.wojs@pwr.edu.pl)

Abstract:

Project covers theoretical/computational studies of optoelectronic properties of graphene and other carbon-based nanostructures, aimed at both fundamental effects and application in future graphene nanotechnology. Major goals are: (i) learning new, powerful methods of electronic-structure calculations (quantum Monte Carlo and density functional theory) and their application for graphene nanostructures; (ii) learning methods of field theory and combining them with extensive present expertise for the studies of many-body effects in electronic and optical response, with expected application in novel nanodevices; (iii) learning complementary skills for establishment of home interdisciplinary research group focused on nanoscience/nanotechnology of new structures/materials and integrated with big EU research programmes (leadership skills, acquiring funds, project management, work in collaboration); (iv) acquintance with (and import of) teaching methods/practices (excellence in this academic skill being crucial for Applicant’s promotion to a full professor upon return). Project’s success relies on Applicant’s present potential/experience (mostly in fundamental research, but also in teaching and leadership) and on superb quality of the host (Cambridge in general, Cavendish Laboratory in particular) in all essential aspects (research, participation in European science, and teaching). The main results will be: (i) multi-aspectual individual education of the Applicant (at a rate possible only due to continuous interaction with Europe’s best specialists and exposure to unparalleled academic environment) as well as (ii) enhancement of attractiveness and potential of European science by means of transfer of knowledge and research/academic habits from the leading European university to a major but still rapidly developing research/academic institution in Poland and (iii) efficient incorporation of the latter in priority EU research programmes.

Collaboration:

Gunnar Möller and Nigel R. Cooper (University of Cambridge, UK)

Steven H. Simon (University of Oxford, UK)

John J. Quinn (University of Tennessee, USA)

Jainendra K. Jain (Pennsylvania State University, USA)

Pawel Hawrylak (National Research Council, Canada)

Leszek Bryja (Wroclaw University of Technology)

Manfred Bayer and Dmitri Yakovlev (Technical University of Dortmund, Germany)

Karel Vyborny (Academy of Sciences, Czech Republic)

Rolf Haug (Leibnitz University of Hannover, Germany)

Ganesh Jaya Sreejith (NORDITA, Sweden)

Csaba Tőke (University of Pécs, Hungary)

Marek Potemski (French National High Magnetic Field Laboratory of Grenoble, France)

Paulina Plochocka (French National High Magnetic Field Laboratory of Toulouse, France)

Dirk Reuter and Andreas D. Wieck (Ruhr Universität Bochum, Germany)

Major accomplishments:

Analysis of fractional quantum Hall effect in half-filled Landau levels of graphene

Evidence for non-Abelian quantum statistics in certain fractional quantum Hall states in the lowest Landau level

Comparison of electron-electron correlations at corresponding fractional fillings of first and second Landau level

Theory of spin dynamics in the half-filled second Landau level (filling factor 5/2)

Analysis of Landau level mixing in the 5/2 state of fractional quantum Hall effect

Publications:

No.

Authors

Title

Journal reference

Impact
factor

1

A. Wójs

Numerical evidence for non-Abelian quantum liquids in the lowest Landau level

Physical Review B
79, 041304 (R) (2009)

3.767

2

K. Vyborny, A. F. Dethlefsen, R. J. Haug, and A. Wójs

Charge-spin excitations of the Ising-type fractional quantum Hall ferromagnets

Physical Review B
80, 045407 (2009)

3.767

3

A. Wójs

Transition from Abelian to non-Abelian quantum liquids in the second Landau level

Physical Review B
80, 041104(R) (2009)

3.767

4

G. Möller, A. Wójs, and N. R. Cooper

Fractional quantum Hall states with non-Abelian statistics

Acta Physica Polonica A
116, 847 (2009)

0.531

5

A. Wójs, G. Möller, S. H. Simon, and N. R. Cooper

Skyrmions in the Moore-Read state at ν=5/2

Physical Review Letters
104, 086801 (2010)

7.943

6

A. Wójs, C. Tőke, and J. K. Jain

Global phase diagram of the fractional quantum Hall effect arising from repulsive three-body interactions

Physical Review Letters
105, 196801 (2010)

7.943

7

A. Wójs, C. Tőke, and J. K. Jain

Landau level mixing and the emergence of Pfaffian excitations for the 5/2 fractional quantum Hall effect

Physical Review Letters
105, 096802 (2010)

7.943

8

A. Wójs

Search for electron liquids with non-Abelian quasiparticles

Journal of Physics: Conference Series
213, 012022 (2010)

0.000

9

G. Möller, A. Wójs, and N. R. Cooper

Neutral fermion excitations in the Moore-Read state at ν=5/2

Physical Review Letters
107, 036803 (2011)

7.943

10

A. Wójs, G. Möller, and N. R. Cooper

Composite fermion dynamics in half-filled Landau levels of graphene

Acta Physica Polonica A
119, 592 (2011)

0.531

11

J. Jadczak, L. Bryja, A. Wójs, G. Bartsch, D.R. Yakovlev, M. Bayer, P. Plochocka, M. Potemski, D. Reuter, and A. Wieck

Exciton exchange between nearly-free and acceptor-bound states of a positive trion assisted by cyclotron excitation

Acta Physica Polonica A
119, 600 (2011)

0.531

12

A. Wójs, G. J. Sreejith, G. Möller, C. Tőke, and J. K. Jain

Composite fermion description of the excitations of the paired Pfaffian fractional quantum Hall state

Acta Physica Polonica A
120, 830 (2011)

0.531

13

J. Jadczak, L. Bryja, A. Wójs, G. Bartsch, D. R. Yakovlev, M. Bayer, P. Plochocka, M. Potemski, D. Reuter, and A. Wieck

Strong temperature destabilization of free exciton recombination in a two-dimensional structures with hole gas

Journal of Physics: Conference Series 334, 012050 (2011)

0.000

14

A. Wójs, G. Möller, and N. R. Cooper

Search for non-Abelian statistics in half-filled Landau levels of graphene

Journal of Physics: Conference Series 334, 012048 (2011)

0.000

15

J. Jadczak, L. Bryja, A. Wójs, G. Bartsch, D. R. Yakovlev, M. Bayer, P. Plochocka, and M. Potemski

Cyclotron-assisted exciton hopping between free and acceptor-bound trions observed in magneto-photoluminescence of a two-dimensional hole gas

AIP Conference Proceedings
1399, 405 (2011)

0.000

16

A. Wójs, G. Möller, S. H. Simon, and N. R. Cooper

Skyrmions in a half-filled second Landau level

AIP Conference Proceedings
1399, 631 (2011)

0.000

 

Invited talks:

No.

Authors

Title

Conference

Place

Dates

1

A. Wójs

Recombination of free and impurity-bound 2D magneto-trions

International Workshop on Optics of Nanostructures

Toruń,
Poland

10-11
Oct
2008

2

A. Wójs

Incompressible quantum liquids with non-Abelian quasiparticles

International Workshop on Semiconductor and carbon-based nanostructures in magnetic fields

Grenoble,
France

24-26
Nov
2008

3

A. Wójs

Search for electron liquids with non-Abelian quasiparticles

10th International School on Theoretical Physics “Symmetry and Structural Properties of Condensed Matter”

Myczkowce,
Poland

2-9
Sep
2009

4

A. Wójs

Toward topological quantum computing: Skyrmions in a half-filled second Landau level

Canada-Poland-Japan International Symposium on Semiconductor, Magnetic and Photonic Nanostructures

Wrocław,
Poland

4-8
Oct
2009

5

A. Wójs

Composite fermion phases in graphene: Search for non-Abelian quasiparticles

Semiconductor Materials for Information Technology, Marie Curie Fellowship for Transfer of Knowledge, Concluding Workshop

Warszawa,
Poland

7-8
May
2010

6

A. Wójs

Fractional quantum Hall effect arising from a repulsive three body interaction

3rd Annual UK-NL Condensed Matter Meeting

Cambridge,
UK

2-3
Sep
2010

7

A. Wójs

Fractional quantum Hall effect for a repulsive three body interaction

34th International Conference of Theoretical Physics “Correlations and Coherence at Different Scales”

Ustroń,
Poland

3-8
Sep
2010