Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A52: Topological Superconductivity: Quantum Wires and 2DEG
8:00 AM–11:00 AM,
Monday, March 15, 2021
Sponsoring
Unit:
DMP
Chair: Alex Matos Abiague, Wayne State Univ
Abstract: A52.00010 : Polarized Majorana fermions in double Kitaev zigzag honeycomb nanoribbons*
10:12 AM–10:24 AM
Live
Presenter:
Marcos Figueira
(Physics Department, Federal Fluminense University - Rio de Janeiro - Brazil)
Authors:
Renan Bento Ribeiro
(Physics Department, Brazilian Center of Physical Research - Rio de Janeiro - Brazil)
Jorge Huamani Correa
(Physics Department, Facultad de Ciencias Naturales y Matematica, Universidad Nacional del Callao, Peru)
Luciano Siliano Ricco
(Department of Physics and Chemistry, Sao Paulo State University (Unesp), School of Engineering - Sao Paulo - Brazil)
Antonio Carlos Seridonio
(Department of Physics and Chemistry, Sao Paulo State University (Unesp), School of Engineering - Sao Paulo - Brazil)
Marcos Figueira
(Physics Department, Federal Fluminense University - Rio de Janeiro - Brazil)
The band structure and the density of states, for the infinite case, exhibit several topological phase transitions associated with the polarized (spin-up or spin-down) Majorana fermions. The results show that the system develops spin-polarized Majorana with half-metallic behavior. We also calculate the energy spectrum as a function of the chemical potential for the finite double spin-KZHNR. The energy spectrum exhibits chemical potential spin-polarized regions with only spin-up or spin-down Majorana zero-energy modes. Those polarized zero-energy modes are closely related to the topological phase transitions exhibited by the corresponding infinite ZHNR. We also propose a possible experimental realization of the double spin-KZHNR.
*We acknowledge support from CNPq, CAPES, and FAPESP.
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