Work

Majorana fermion induced power-law scaling in the violations of the Wiedemann–Franz law

Year: 2024

Type: article

Abstract: Violation of the Wiedemann–Franz law in a 2D topological insulator due to Majorana bound states is studied via the Lorenz ratio in the single-particle picture. We study the scaling of the Lorenz ratio in the presence and absence of Majorana bound states with inelastic scattering modeled using a Buttiker voltage–temperature probe. We compare our results with those seen in a quantum dot junction in the Luttinger liquid picture operating in the topological Kondo regime. We explore the scaling of the Lorentz ratio in our setup when either phase and momentum relaxation or phase relaxation is present. This scaling differs from that predicted by the Luttinger liquid picture for both uncoupled and coupled Majorana cases.

Source: Journal of Applied Physics

DOI: 10.1063/5.0236520

Authors: Sachiraj Mishra, Ritesh Das, Colin Benjamin

Institutions: National Institute of Science Education and Research, Homi Bhabha National Institute

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

OpenAlex ID: W4405328795