作者
Sayandip Dhara, Garry Goldstein, Claudio Chamon, Eduardo R Mucciolo
发表日期
2023/2/3
期刊
Physical Review B
卷号
107
期号
7
页码范围
075402
出版商
American Physical Society
简介
We present a scheme to use physical Majorana quasizero modes at each junction of a two-dimensional nanowire network to build a logical Majorana zero mode, the location of which is controllable through gate voltages. The wire network is a way to realize a recent proposal to imprint a Kekulé vortex pattern on a honeycomb lattice via gate voltages. We show that a specific type of junction, other than a naive Y or T junction, is needed to realize, without breaking time-reversal symmetry, an artificial “graphene” system with Majorana fermions instead of complex ones at each site. The junction we propose (i) traps exactly one physical Majorana (quasi) zero mode at each site of either a brick wall or honeycomb lattice and (ii) allows this mode to hybridize with all three neighboring sites. Using a lattice of these junctions and starting from an electronic, tight-binding model for the wires, we imprint the voltage patterns …
学术搜索中的文章
S Dhara, G Goldstein, C Chamon, ER Mucciolo - Physical Review B, 2023