TY - JOUR
T1 - Chiral Majorana modes via proximity to a twisted cuprate bilayer
AU - Margalit, Gilad
AU - Yan, Binghai
AU - Franz, Marcel
AU - Oreg, Yuval
N1 - Funding Information: G.M. wishes to thank R. Day for helpful discussions concerning DFT simulations of the bilayer. B.Y. acknowledges financial support by the European Research Council (ERC Consolidator Grant “NonlinearTopo,” Grant No. 815869) and the MINERVA Stiftung with the funds from the BMBF of the Federal Republic of Germany. M.F. research was supported, in part, by NSERC and the Canada First Research Excellence Fund, Quantum Materials and Future Technologies Program. Y.O acknowledges the European Union's Horizon 2020 Research and Innovation Programme (Grant Agreement No. LEGOTOP 788715), the DFG (Grant No. CRC/Transregio 183, EI 519/7-1), ISF Quantum Science and Technology (Grant No. 2074/19), the BSF and NSF (Grant No. 2018643).
PY - 2022/11/15
Y1 - 2022/11/15
N2 - We propose a novel heterostructure to achieve chiral topological superconductivity in two dimensions. A substrate with a large Rashba spin-orbit coupling energy is brought in proximity to a twisted bilayer of thin films exfoliated from a high-temperature cuprate superconductor. The combined system is then exposed to an out-of-plane magnetic field. The rare d + id pairing symmetry expected to occur in such a system allows for nontrivial topology; specifically, in contrast to the case of the twisted bilayer in isolation, the substrate induces an odd Chern number. The resulting phase is characterized by the presence of a Majorana zero mode in each vortex.
AB - We propose a novel heterostructure to achieve chiral topological superconductivity in two dimensions. A substrate with a large Rashba spin-orbit coupling energy is brought in proximity to a twisted bilayer of thin films exfoliated from a high-temperature cuprate superconductor. The combined system is then exposed to an out-of-plane magnetic field. The rare d + id pairing symmetry expected to occur in such a system allows for nontrivial topology; specifically, in contrast to the case of the twisted bilayer in isolation, the substrate induces an odd Chern number. The resulting phase is characterized by the presence of a Majorana zero mode in each vortex.
UR - https://www.scopus.com/pages/publications/85143778791
U2 - 10.1103/PhysRevB.106.205424
DO - 10.1103/PhysRevB.106.205424
M3 - Article
SN - 2469-9950
VL - 106
JO - Physical Review B
JF - Physical Review B
IS - 20
M1 - 205424
ER -