TY  - JOUR
AU  - Legendre, Julian
AU  - Zsurka, Eduárd
AU  - Di Miceli, Daniele
AU  - Serra, Llorenç
AU  - Moors, Kristof
AU  - Schmidt, Thomas L.
TI  - Topological properties of finite-size heterostructures of magnetic topological insulators and superconductors
JO  - Physical review / B
VL  - 110
IS  - 7
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2024-05737
SP  - 075426
PY  - 2024
AB  - Heterostructures of magnetic topological insulators (MTIs) and superconductors (SCs) in two-dimensional (2D) slab and one-dimensional (1D) nanoribbon geometries have been predicted to host, respectively, chiral Majorana edge states (CMESs) and Majorana bound states (MBSs). We study the topological properties of such MTI/SC heterostructures upon variation of the geometry from wide slabs to quasi-1D nanoribbon systems and as a function of the chemical potential, the magnetic doping, and the induced superconducting pairing potential. To do so, we construct effective symmetry-constrained low-energy Hamiltonians accounting for the real-space confinement. For a nanoribbon geometry with finite width and length, we observe different phases characterized by CMESs, MBSs, as well as coexisting CMESs and MBSs, as the chemical potential, the magnetic doping, and/or the width are varied.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001300987000004
DO  - DOI:10.1103/PhysRevB.110.075426
UR  - https://juser.fz-juelich.de/record/1031557
ER  -