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Distinguishing between topological and quasi Majorana zero modes with a dissipative resonant level

Zhang, Gu; Spånslätt, Christian

Abstract:
Distinguishing between topological Majorana zero modes and quasi Majorana modes -- trivial low energy Andreev bound states -- is an important step towards realizing topological hybrid nanowire devices. We propose that this distinction can be made by connecting a hybrid nanowire to a dissipative resonant level realized by a quantum dot weakly coupled to high resistance leads. We show that the qualitative temperature scaling of the width of the resonant level zero bias conductance peak provides a signature unique to true Majorana zero modes. The degeneracy induced by a true Majorana zero mode is further shown to stabilize this conductance peak against particle-hole asymmetry.



Zugehörige Institution(en) am KIT Institut für Theorie der Kondensierten Materie (TKM)
Institut für Quantenmaterialien und -technologien (IQMT)
Publikationstyp Forschungsbericht/Preprint
Publikationsjahr 2020
Sprache Englisch
Identifikator KITopen-ID: 1000124647
Umfang 11 S.
Vorab online veröffentlicht am 07.07.2020
Nachgewiesen in arXiv
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