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Flat bands and topology in superconductive materials

Publications

Wave-packet dynamics of Bogoliubov quasiparticles: Quantum metric effects

Author(s): Long Liang, Sebastiano Peotta, Ari Harju, Päivi Törmä
Published in: Physical Review B, 96/6, 2017, Page(s) 064511, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PhysRevB.96.064511

Geometric Origin of Superfluidity in the Lieb-Lattice Flat Band

Author(s): Aleksi Julku, Sebastiano Peotta, Tuomas I. Vanhala, Dong-Hee Kim, Päivi Törmä
Published in: Physical Review Letters, 117/4, 2016, Page(s) 045303, ISSN 0031-9007
Publisher: American Physical Society
DOI: 10.1103/PhysRevLett.117.045303

Spin-imbalanced pairing and Fermi surface deformation in flat bands

Author(s): Kukka-Emilia Huhtinen, Marek Tylutki, Pramod Kumar, Tuomas I. Vanhala, Sebastiano Peotta, Päivi Törmä
Published in: Physical Review B, 97/21, 2018, Page(s) 214503, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PhysRevB.97.214503

Band geometry, Berry curvature, and superfluid weight

Author(s): Long Liang, Tuomas I. Vanhala, Sebastiano Peotta, Topi Siro, Ari Harju, Päivi Törmä
Published in: Physical Review B, 95/2, 2017, Page(s) 024515, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PhysRevB.95.024515

Effective theory and emergent SU ( 2 ) symmetry in the flat bands of attractive Hubbard models

Author(s): Murad Tovmasyan, Sebastiano Peotta, Päivi Törmä, Sebastian D. Huber
Published in: Physical Review B, 94/24, 2016, Page(s) 245149, ISSN 2469-9950
Publisher: American Physical Society
DOI: 10.1103/PhysRevB.94.245149