New Topological Superconductors using Flat Bands, Orbital Effects, and Quantum Critical Points

Project funded by Swedish Research Council (Project grant), grant 2018-03488_VR. Participating organisations named by the source: Stockholm University. Funded amount: SEK 3,259,000, as stated by the source. Runs 2019-01-01 to 2022-12-31. Keywords: Naturvetenskap, Natural Sciences, Fysik, Physical Sciences, Den kondenserade materiens fysik, Condensed Matter Physics. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-12-05); national funding data, not CORDIS. Abstract given by the source: This project aims at theoretically discover and characterize entirely new quantum states of matter by novel combinations of global topology and local superconducting order. More specifically, the project takes a new and systematic approach to finding new topological superconductors, by (A) starting from complex but common normal electronic structures and by (B) significantly expanding the class of known superconductors spontaneously breaking time-reversal symmetry. In part (A) I will study materials with normal-state flat energy bands, emerging due to non-trivial topology, and materials with multiple low-energy orbitals, which each harbor large possibilities for topological superconductivity. In part (B) I will focus on two very promising new possibilities for time-reversal symmetry breaking superconductivity; as an intermediary phase in the quantum critical region of nodal superconductors and in flat band surface states of nodal-line superconductors. Specific targets range from achieving high-temperature superconductivity in topological flat band materials, including different graphene systems, to finding new time-reversal symmetry breaking chiral states in strongly correlated materials and new exotic phenomena in nematic multiorbital superconductors. The project employs a wide range of techniques, from analytically tractable Green’s function methods to large-scale numerical calculations of inhomogeneous superconducting systems and strongly correlated materials.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Swedish Research Council. Retrieved 2026-10-28. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The project, funded by the Swedish Research Council with SEK 3,259,000, runs from January 1, 2019, to December 31, 2022, at Stockholm University. It aims to discover new quantum states of matter through topological superconductors. Suggested technology pillar: enabling. Generated by AI from the public source text; it may contain errors and the original source is authoritative.