Coulomb Blockade of a Nearly Open Majorana Island

Dmitry Pikulin, Karsten Flensberg, Leonid I. Glazman, Manuel Houzet, Roman M. Lutchyn

Research output: Contribution to journalJournal articleResearchpeer-review

16 Citations (Scopus)
23 Downloads (Pure)

Abstract

We consider the ground-state energy and the spectrum of the low-energy excitations of a Majorana island formed of topological superconductors connected by a single-mode junction of arbitrary transmission. Coulomb blockade results in e-periodic modulation of the energies with the gate-induced charge. We find the amplitude of modulation as a function of reflection coefficient R. The amplitude scales as R in the limit R→0. At larger R, the dependence of the amplitude on the Josephson and charging energies is similar to that of a conventional-superconductor Cooper-pair box. The crossover value of R is small and depends on the ratio of the charging energy to superconducting gap.

Original languageEnglish
Article number016801
JournalPhysical Review Letters
Volume122
Issue number1
Number of pages5
ISSN0031-9007
DOIs
Publication statusPublished - 3 Jan 2019

Bibliographical note

[Qdev]

Cite this