Majorana fermions on the domain wall of marginally twisted bilayer of transition metal dichalcogenides

Huang, Richang1,2; Yu, Dapeng3,4,5,6,7; Yao, Wang8,9

2023-09-18

10.1103/PhysRevB.108.115307

PHYSICAL REVIEW B   影响因子和分区

2469-9950

2469-9969

We propose to realize two-dimensional superstructures of chiral topological superconductors based on marginally twisted bilayers of transition metal dichalcogenides in proximity to a conventional s-wave super-conductor. Majorana fermions arise at the domain boundaries of the AB and A'B' stacking domains as a result of a sign flip across the domain wall in a Rashba spin-orbit coupling coefficient at the valence band edge. Unlike previous models that only allow for one Majorana per boundary, each domain wall can host two helical Majorana edge states with the same Majorana polarization, preventing hybridization. This offers a promising alternative platform for studying Majorana physics.

SCI ; EI

英语

通讯

National Key R&D Pro- gram of China[2020YFA0309600] ; UGC/RGC of Hong Kong SAR[AoE/P-701/20] ; HKU[SRFS2122-7S05] ; Shenzhen-Hong Kong cooperation zone for technology and innovation[HZQB- KCZYB-2020050] ; Innovation Program for Quantum Science and Technology[ZD0301703]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001080286200002

AMER PHYSICAL SOC

20234114845495

Shear waves ; Superconducting materials ; Transition metals

Metallurgy and Metallography:531 ; Superconducting Materials:708.3 ; Mechanics:931.1

PHYSICS

Web of Science

1.Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
3.Shenzhen Inst Quantum Sci & Engn, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
5.Int Quantum Acad, Shenzhen 518048, Peoples R China
6.Southern Univ Sci & Technol, Guangdong Prov Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
7.Southern Univ Sci & Technol, Shenzhen Key Lab Quantum Sci & Engn, Shenzhen 518055, Peoples R China
8.Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
9.HKU UCAS Joint Inst Theoret & Computat Phys, Hong Kong, Peoples R China

Huang, Richang,Yu, Dapeng,Yao, Wang. Majorana fermions on the domain wall of marginally twisted bilayer of transition metal dichalcogenides[J]. PHYSICAL REVIEW B,2023,108(11).

Huang, Richang,Yu, Dapeng,&Yao, Wang.(2023).Majorana fermions on the domain wall of marginally twisted bilayer of transition metal dichalcogenides.PHYSICAL REVIEW B,108(11).

Huang, Richang,et al."Majorana fermions on the domain wall of marginally twisted bilayer of transition metal dichalcogenides".PHYSICAL REVIEW B 108.11(2023).