RCQM Spring Workshop "Topological superconductors: Materials, topological order, and quenched disorder"

Workshop Information

Topological superconductors: Materials, topological order, and quenched disorder

Location: Rice University, Houston, Texas.  Dell Butcher Hall, Room 180

Dates: April 24-25, 2018

Registration is Closed - You may register on sight at the check in desk

*Click Here to Download the Updated Poster Abstract Book*



In the past decade there has been an explosion of interest in new forms of topological matter, driven by the discoveries of topological insulators and gapless topological phases. An intense effort is now being made to employ these as platforms for topological superconductivity. The discovery of bulk 3D topological superconductors would carry the promise of exotic quantum phenomena on their surface, in the form of so-called Majorana surface states. Several candidate materials have been proposed and are currently being measured and hotly debated.

The discovery of bulk topological superconducting materials could open the door to topological quantum computation, in which quantum information is stored in the topology of a macroscopic quantum state. Much experimental and theoretical effort has been invested by major companies to realize topological quantum computing in artificial (engineered) systems, but many technical barriers remain to be solved. Bulk topological superconductors could solve these problems “automatically” through a physical realization of the needed topology, if a suitable host material is found. The time is ripe for a small, intensive conference hosting both experimentalists and theorists to discuss prospects for bulk topological superconductivity. The conference will emphasize materials and existing experiments, as well as fundamental theoretical advances that link topological superconductors to the well-known quantum Hall effect in 2D. The workshop will address these key unsolved problems and by bringing together experts from different communities, will help advance the research frontier.



(A) Theorists
1. Andreas Ludwig (UCSB)
2. Daniel Agterberg (U Wisc Milwaukee)
3. Lukasz Fidkowski (University of Washington) 
4. Masaki Oshikawa (University of Tokyo)
5. Masatoshi Sato (Kyoto University)
6. Pouyan Ghaemi (CUNY)
7. Fiona Burnell (University of Minnesota) 

(B) Experimentalists
1. Johnpierre Paglione (U Maryland, co-organizer)
2. Hai-Hu Wen (Nanjing University)
3. Vidya Madhavan (UIUC)
4. Hong Ding (IOP, Beijing)
5. Shingo Yonezawa (Kyoto University)
6. Jimmy Williams (University of Maryland, College Park)
7. Silke Paschen (TU Wien) 


Tuesday Morning, April 24

8:45 Welcome address: Matthew Foster

Session I: Candidate 3D Topological Superconductors

9:00 Shingo Yonezawa (Kyoto University)
Nematic superconductivity in doped-Bi2Se3 topological superconductors

9:30 Pouyan Ghaemi (CUNY)
Interplay of the surface and bulk topological superconductivity in doped topological insulators

10:00 Hai-Hu Wen (Nanjing U.)
Evidence of Nematic Superconductivity in Bi2Te3 Thin Film Deposited on FeTe0.55Se0.45

10:30 --- coffee break ---


Session II: Topological Superconductivity in Weyl semimetals

11:00 Pavan Hosur (U. Houston)
Transport evidence for topological superconductivity in doped beta-PdBi2

11:30 Vidya Madhavan (UIUC)
STM studies of Superconductivity in Weyl semimetals


Lunch and informal discussions (12:00 – 1:30pm)


Tuesday Afternoon, April 24

Session III: Surface Topological Superconductivity and Crystalline TIs

1:30 Hong Ding (IOP, Beijing, China)
Majorana bound state in iron-based superconductor Fe(Te, Se)

2:00 Masatoshi Sato (Kyoto University, Japan)
Topological Crystalline Materials of J=3/2 Electrons:
Antiperovskite, Dirac points, and High Winding Topological Superconductivity

2:30 Jimmy Williams (U. Maryland)
Josephson Junctions of Topological Crystalline Insulators

3:00 --- coffee break ---

3:30 – 5:15pm: Discussion Session I

5:15 - 6:00pm: Reception

6:00 Invited Speakers and External Poster Presenters Board Bus

6:30 Workshop Dinner (Invited Speakers/RCQM Faculty)


Wednesday Morning, April 25

Session IV: Topological Superconductivity in half-Heuslers & other Weyl semimetals

9:00 Johnpierre Paglione (U. Maryland)
High-spin superconductivity in topological half-Heusler semimetals

9:30 Andriy Nevidomskyy (Rice)
Pairing of effective spin-3/2 carriers: interplay of topology & disorder

10:00 Daniel Agterberg (U. Wisconsin, Milwaukee)
Topologically protected Bogoliubov Fermi surfaces

10:30 --- coffee break ---

Session V: Classification and Effects of Quenched Disorder

11:00 Andreas Ludwig (UCSB)
Disorder as a Tool to Classify Topological Insulators and Superconductors

11:30 Matthew Foster (Rice)
Quantized surface transport and universal criticality in dirty bulk topological superconductors:
A 3D analog of the integer quantum hall effect?

Lunch/Informal discussions & Poster Session (12:00 – 1:30pm)


Wednesday Afternoon, April 25

Session VI: Topology & Strong Interactions

1:30 Lukasz Fidkowski (U. Washington)
Strongly interacting topological superconductors beyond the band classification

2:00 Masaki Oshikawa (University of Tokyo, Japan)
Orbital Angular Momentum and Current Distribution in Two Dimensional Chiral Superfluids

2:30 --- coffee break ---

3:00 Silke Paschen (TU Vienna)
Weyl semimetal behavior in Kondo systems

3:30 Fiona Burnell (U. Minnesota)
Microscopic analysis of superconducting instabilities in NbSe2 and MbS2

3:30 – 5:00pm: Discussion session II

5:00 pm – Meeting adjourned


Organizers’ Information

Organizers: Matthew Foster (Assistant Professor, Rice University, matthew.foster@rice.edu), Andriy Nevidomskyy (Associate Professor, Rice University, nevidomskyy@rice.edu), Johnpierre Paglione (Professor, University of Maryland, paglione@umd.edu), Pavan Hosur (Assistant Professor, University of Houston, pavanhosur@gmail.com)



Special Thanks to our Event Sponsors:



Tue, Apr. 24 - Wed, Apr. 25, 2018


Rice University
United States