2014/03/31 by Minchul Lee, Mahn‐Soo Choi, Mahn-Soo Choi · 7 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Fermion #Graphene research and applications #MAJORANA #Majorana fermion #Mesoscopic physics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #Topological Materials and Phenomena #Topology (electrical circuits) #Zero mode #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.113.076801
published in Physical Review Letters 113(7), 076801 (American Physical Society) · To appear in Phys. Rev. Lett.; Supplemental Material available at http://iff.korea.ac.kr/Opus/ChoiMS14c-Suppl.pdf; References and Suppl. Mat. updated
arxiv created 2014/07/25 · openalex publication_date 2014/08/13 · arxiv updated 2014/09/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the mesoscopic resistor-capacitor circuit consisting of a quantum dot coupled to spatially separated Majorana fermion modes in a chiral topological superconductor. We find substantially enhanced relaxation resistance due to the nature of Majorana fermions, which are their own antiparticles and are composed of particle and hole excitations in the same abundance. Further, if only a single Majorana mode is involved, the zero-frequency relaxation resistance is completely suppressed due to a destructive interference. As a result, the Majorana mode opens an exotic dissipative channel on a superconductor which is typically regarded as dissipationless due to its finite superconducting gap.