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Toposuper2021 Online conference on emergent topological superconductivity
7-9 June 2021

Aims and scope:

This conference focuses on the topological superconductivity in low-dimensional correlated systems.

The study of topological phases of matter has a rich history going back to the quantum Hall effect and superfluid 3Helium. Although, only recently topology has become one of the main concepts in condensed matter physics. The significant interest is in the low dimensional systems where the interplay of electronic band structure topology and correlations between particles leads to the unusual topological phases, for example topological superconductivity hosting Majorana surface (bound) states. A topological superconductor might be engineered, for example, by utilizing the nanowires with strong spin-orbit interaction, (fractional) quantum Hall edge states quantum, and (twisted-) bilayer graphene heterostructures. Conference topics include:

Triplet superconductivity in hybrid nanostructures.
Hybrid superconductor – semiconductor nanostructures.
Majoranas in superconductors.
Surface states in topological materials.
Topological phases in quantum materials.
Magnetic impurities in superconductors.
Vortex bound states.

This conference aims to bring together scientists working on different aspects of superconductivity in topological systems to discuss the recent experimental and theoretical developments, explore future research directions, and stimulate new collaborations.

Organizing committee:

Minna Günes
Pertti Hakonen
Manohar Kumar
Alexander Zyuzin

COST Action advisory committee:

Yonathan Anahory
Annica Black-Schaffer
Szabolcs Csonka
Jeroen Custers
Alfredo Levy Yeyati
Chuan Li
Floriana Lombardi
Tomas Novotny
Dimitri Roditchev
Hermann Suderow
Francesco Tafuri
and the COST Action management committee.

Programme

Conference ZOOM link

Abstract Booklet

Please note, the conference schedule is in
Eastern European Summer Time (GMT + 3)

Monday, June 7

Time
Helsinki (GMT+3)
Monday, June 7
10:45-
11:00
Brief introduction by the organizers
Session chair Timo Hyart
11:00-
11:45
Carlo Beenakker
Deconfinement of Majorana vortex modes produces a superconducting Landau level
11:45-
12:10
Elsa Prada
(One of the) latest Majorana nanowire designs: ferromagnetic hybrid nanowires
12:10-
12:30
Elias Portolés
Gate-defined Josephson junctions in magic-angle twisted bilayer graphene 
12:30-
13:00
Break
13:00-
14:00
Poster session
Session chair Organizers
14:00-
14:45
Dmitry Efetov
Competing phases of correlated Chern insulators in Superconducting Twisted Bilayer Graphene
14:45-
15:10
Ady Stern
Topology vs. interaction in fragile bands
15:10-
15:20
Break
Session chair Ady Stern
15:20-
15:45
Gwendal Feve
Fractional statistics of anyons in a mesoscopic collider
15:45-
16:05
Mitali Banerjee
Quantization of heat flow in the fractional quantum Hall regime
16:05-
16:30
Javad Shabani
Progress in realizing topological superconductivity in planar Josephson junctions
16:30-
17:00
Break
Session chair Szabolcs Csonka
17:00-
17:20
Peter Makk
Andreev molecule in parallel InAs nanowires
17:20-
17:45
Zahid Hasan
Superconducting Topological Matter
17:45-
18:10
Thibaut Jonckheere
Giant Shot Noise from Majorana Zero Modes in Topological Trijunctions
18:10-
18:30
Qianhui Shi
Evidence for interlayer exciton condensates in natural bilayer WSe2

Tuesday, June 8

Time
Helsinki (GMT+3)
Tuesday, June 8
Session chair Organizers
14:00-
14:45
Daniel Loss
tba
14:45-
15:10
Björn Trauzettel
Majorana-induced DC Shapiro steps in topological Josephson junctions
15:10-
15:20
Break
Session chair Chuan Li
15:20-
15:45
Sophie Guéron
Signatures of Higher Order Topology in Bismuth-based Josephson Junctions
15:45-
16:10
Teemu Ojanen
Engineering 2d topological superconductivity in hybrid magnet-topological structures
16:10-
16:35
Jose Lado
Designing topological superconductivity from
solitons in antiferromagnet-superconductor interfaces
16:35-
17:30
Break/poster session
Session chair Alfredo Yeyati
17:30-
17:55
Jelena Klinovaja
Majorana bound states in topological insulators without a vortex
17:55-
18:20
Sergey Frolov
How do we discover Majorana particles in nanowires?
18:20-
18:30
Break
18:30-
18:55
Nicholas Butch
Spin triplet superconductivity in uranium ditelluride
18:55-
19:15
Dmitry Oriekhov
Voltage staircase in a current-biased quantum-dot Josephson junction

Wednesday, June 9

Time
Helsinki (GMT+3)
Wednesday, June 9
Session chair Peter Liljeroth
14:00-
14:45
Katharina Franke
Building and investigating magnetic adatom chains on superconductors 
atom by atom
14:45-
15:10
Felix von Oppen
Yu-Shiba-Rusinov states in real metals
15:10-
15:20
Break
Session chair Felix von Oppen
15:20-
15:45
Shawulienu Kezilebieke
Topological superconductivity in van der Waals heterostructures
15:45-
16:10
Pascal Simon
Odd-frequency pairing induced by magnetic impurities in superconductors
16:10-
16:35
Sunghun Park
Coherent coupling between vortex bound states and magnetic impurities in 2D layered superconductors
16:35-
17:30
Break/poster session
Session chair Jeroen Custers
17:30-
17:55
Eun-Ah Kim
Two-dimensional topological superconductivity
17:55-
18:15
Timo Hyart  
Spintronics and quantum computing in hybrid devices combining magnetism, superconductivity and topological properties
18:15-
18:35
Sergio Acero González
Photon-assisted resonant Andreev reflections: Yu-Shiba-Rusinov and Majorana states
Concluding remarks

Posters

Booklet

Posters will be presented in the respective ZOOM breakout rooms named

Poster X: Lastname

You might want to read abstracts or check out posters by following the links below.

Monday, June 7th.
13:00-14:00

Poster3: Hugo Bartolomei, Squeezing of edge magnetoplasmon states in quantum Hall edge channel 
Poster4: Alessandro Braggio, Nonlocal thermoelectricity in topological Josephson junctions 
Poster5: Paramita Dutta, Finding exotic superconducting pairing in topological semimetals
Poster6: Muhammad T. Hague, Thermoelectric current in graphene Cooper pair splitter
Poster7: Preeti Pandey, A Ballistic Graphene Based Cooper Pair Splitter 
Poster8: Arnob Kumar Ghosh, Floquet generation of Second-order Topological Superconductor
Poster10: Dávid Pataki, Triplet blockade in a Josephson junction with a double quantum dot
Poster11: Hermann Suderow, Feedback driven Josephson effect in ultra-small tunnel junctions
Poster12: Vasily Vadimov, Many-body Majorana-like zero modes without gauge symmetry breaking

Tuesday, June 8th
16:35-17:30

Poster13: Jiashu Wang, Coexistence of superconductivity and spin-orbit splitting in Sn1-xInxTe thin film
Poster14: Kyungwha Park, Zero-bias peak induced by a magnetic impurity in a conventional superconductor: first principles-based study
Poster15: Tania Paul, Interplay of excitonic correlation with quantum spin hall effect and superconductivity in electron-hole bilayers
Poster16: Malcolm Jardine, Integrating micromagnets and hybrid nanowires in heterostructure Majorana fermions experiments
Poster17: Maryam Khosravian, Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moiré patterns
Poster18: Olivér Kürtössy, Andreev molecule in parallel InAs nanowires
Poster19: Samuel D. Escribano, Improved effective equation for the Rashba spin-orbit coupling in semiconductor nanowires
Poster20: Andrei Kudriashov, Magnetic Gap of Fe-Doped BiSbTe2Se
Poster21: Riku Tuovinen, Electron correlation effects in superconducting nanowires in and out of equilibrium 
Poster22: Fredrik Brange, Dynamic Cooper pair splitter
Poster23: R. Sánchez-Barquilla, Magnetic field dependence of the tunneling density of states in the type-II Weyl semimetal WTe2
Poster9: Cem Sevik, Superconducting Properties of MXene Monolayers
Poster35: Maciej Wiesner, Investigations of the proximity-induced superconductivity in the Bi2Te3 topological insulator by microRaman spectroscopy

Wednesday, June 9th
16:35-17:30

Poster24: Archana Mishra, A Yu-Shiba-Rusinov Qubit
Poster25: Samuel D. Escribano, Majorana Bound States in Semiconductor/Ferromagnetic insulator/Superconductor nanowire heterostructures
Poster26: Panch Ram, YSR-like band in the superconducting periodic Anderson model
Poster27: Lisa Rütten, Coupling of Yu-Shiba-Rusinov states in the presence of a charge-density wave 
Poster28: Uriel Allan Aceves Rodríguez, Magnetic exchange interactions at proximity of a superconductor
Poster29: Patric Holmvall, Phase crystals: a class of non-uniform superconducting ground states that break time-reversal symmetry
Poster30: Vivekananda Adak, A theoretical proposal for detection of Majorana bound state in quantum spin Hall insulator using boost
Poster31: Anton Bespalov, Large spectral gap and impurity-induced states in a two-dimensional Abrikosov vortex
Poster32: Tusaradri Mohapatra, Probing helical vs chiral character of topological superconductors via non-local Hanbury-Brown and Twiss correlations
Poster33: Dmitry S. Golubev, Transport in Josephson junctions with a graphene interlayer
Poster34: Antonio L. R. Manesco, Correlations and topology in buckled graphene superlattices