TY - JOUR
T1 - Disorder-induced topological phase transition in a driven Majorana chain
AU - Ling, Henry
AU - Richard, Philip
AU - Koshkaki, Saeed Rahmanian
AU - Kolodrubetz, Michael
AU - Meidan, Dganit
AU - Mitra, Aditi
AU - Pereg-Barnea, T.
N1 - Publisher Copyright:
© 2024 American Physical Society.
PY - 2024/4/15
Y1 - 2024/4/15
N2 - We study a periodically driven one-dimensional Kitaev model in the presence of disorder. In the clean limit our model exhibits four topological phases corresponding to the existence or nonexistence of edge modes at zero and π quasienergy. When potential disorder is added, the system parameters get renormalized and the system may exhibit a topological phase transition. When starting from the Majorana π mode (MPM) phase, which hosts only edge Majoranas with quasienergy π, disorder induces a transition into a neighboring phase with both π and zero modes on the edges. We characterize the disordered system using (i) exact diagonalization, (ii) Arnoldi mapping onto an effective tight-binding chain, and (iii) topological entanglement entropy.
AB - We study a periodically driven one-dimensional Kitaev model in the presence of disorder. In the clean limit our model exhibits four topological phases corresponding to the existence or nonexistence of edge modes at zero and π quasienergy. When potential disorder is added, the system parameters get renormalized and the system may exhibit a topological phase transition. When starting from the Majorana π mode (MPM) phase, which hosts only edge Majoranas with quasienergy π, disorder induces a transition into a neighboring phase with both π and zero modes on the edges. We characterize the disordered system using (i) exact diagonalization, (ii) Arnoldi mapping onto an effective tight-binding chain, and (iii) topological entanglement entropy.
UR - http://www.scopus.com/inward/record.url?scp=85190722445&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.109.155144
DO - 10.1103/PhysRevB.109.155144
M3 - Article
AN - SCOPUS:85190722445
SN - 2469-9950
VL - 109
JO - Physical Review B
JF - Physical Review B
IS - 15
M1 - 155144
ER -