Quantum theory lab

The quantum theory lab of SPSMS pursues research in nanoelectronics, superconductivity, magnetism, and electronic correlations. We work in close collaboration with experimentalists.

 

Last update : 10/01 2014 (501)

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Quantum theory lab – People : Pacôme Armagnat (PhD candidate) Anton Bespalov (postdoctoral researcher) Lars Elster (PhD candidate) Erik I. Eriksson (postdoctoral researcher) Christoph Groth (CEA staff researcher) Manuel Houzet ... More »
Quantum theory lab – Research : Frustrated magnets, Strongly correlated electronic systems: heavy fermions and quantum phase transitions, Unconventional superconductivity,ferromagnetic superconductors, and non-centrosymmetric superconductors, Polarised Fermi liquids, Transport and quantum ... More »
Highlights
04-05-2011
Based on numerical simulations, we have reached a new step in our understanding of the mechanisms that drive the growth of carbon nanotubes.   One of the most commonly used methods for synthesizing carbon nanotubes is chemical vapor deposition (CVD). The reaction involves a liquid ... More »
 
HAL publications
PhD

Dernière mise à jour : 25-03-2017

/PHELIQS/GT

 

Interaction effects on topological properties of multiterminal Josephson junctions

SL-DRF-17-0246

Research field : Theoretical Physics
Location :

Photonique, Electronique et Ingénierie Quantiques (PHELIQS)

Groupe Théorie (GT)

Grenoble

Contact :

Manuel HOUZET

Julia MEYER

Starting date : 01-09-2016

Contact :

Manuel HOUZET

CEA - DRF/INAC/PHELIQS/GT

04.38.78.90.44

Thesis supervisor :

Julia MEYER

Université Grenoble Alpes - DRF/INAC/PHELIQS/GT

04.38.78.31.46

More : http://inac.cea.fr/Pisp/manuel.houzet

There is currently an active search for new phases of matter that admit topologically protected edge states. A promising route to realize them consists in combining conventional materials into appropriate heterostructures. Multiterminal Josephson junctions between conventional superconductors may be considered as topological materials themselves. As an example, 4-terminal junctions can accommodate topologically protected zero-energy bound states, which form so-called Weyl singularities. Their existence may be revealed through a quantized transconductance, like in the quantum Hall effect, but without magnetic field.

The aim of the project will be to explore further this recent idea by investigating theoretically the robustness of this prediction in the presence of local Coulomb repulsion within the junction. In particular, the fate of Weyl singularities will be analyzed within an actual quantum-dot model for the junction.

• Theoretical Physics

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