skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Wireless Majorana Bound States: From Magnetic Tunability to Braiding

Authors:
; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1294686
Grant/Contract Number:
SC0004890
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 7; Related Information: CHORUS Timestamp: 2017-06-24 16:38:51; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Fatin, Geoffrey L., Matos-Abiague, Alex, Scharf, Benedikt, and Žutić, Igor. Wireless Majorana Bound States: From Magnetic Tunability to Braiding. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.077002.
Fatin, Geoffrey L., Matos-Abiague, Alex, Scharf, Benedikt, & Žutić, Igor. Wireless Majorana Bound States: From Magnetic Tunability to Braiding. United States. doi:10.1103/PhysRevLett.117.077002.
Fatin, Geoffrey L., Matos-Abiague, Alex, Scharf, Benedikt, and Žutić, Igor. 2016. "Wireless Majorana Bound States: From Magnetic Tunability to Braiding". United States. doi:10.1103/PhysRevLett.117.077002.
@article{osti_1294686,
title = {Wireless Majorana Bound States: From Magnetic Tunability to Braiding},
author = {Fatin, Geoffrey L. and Matos-Abiague, Alex and Scharf, Benedikt and Žutić, Igor},
abstractNote = {},
doi = {10.1103/PhysRevLett.117.077002},
journal = {Physical Review Letters},
number = 7,
volume = 117,
place = {United States},
year = 2016,
month = 8
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.117.077002

Citation Metrics:
Cited by: 1work
Citation information provided by
Web of Science

Save / Share:
  • Cited by 4
  • Cited by 6
  • We propose a method to probe the nonlocality of a pair of Majorana bound states by crossed Andreev reflection, which is the injection of an electron into one bound state followed by the emission of a hole by the other (equivalent to the splitting of a Cooper pair). We find that, at sufficiently low excitation energies, this nonlocal scattering process dominates over local Andreev reflection involving a single bound state. As a consequence, the low-temperature and low-frequency fluctuations {delta}I{sub i} of currents into the two bound states i=1, 2 are maximally correlated: {delta}I{sub 1}{delta}I{sub 2}={delta}I{sub i}{sup 2}.
  • We study the tunneling transport properties through a system of parallel quantum dots which are coupled to Majorana bound states (MBSs). The conductance and spectral function are computed using the retarded Green's function method based on the equation of motion. The conductance of the system is 2e{sup 2}/h at zero Fermi energy and is robust against the coupling between the MBSs and the quantum dots. The dependence of the Fermi energy on the spectral function is different for the first dot (dot1) than for the second dot (dot2) with fixed dot2-MBSs coupling. The influence of the Majorana bound states onmore » the spectral function was studied for the series and parallel configurations of the system. It was found that when the configuration is in series, the Majorana bound states play an important role, resulting in a spectral function with three peaks. However, the spectral function shows two peaks when the system is in a parallel configuration. The zero Fermi energy spectral function is always 1/2 not only in series but also in the parallel configuration and robust against the coupling between the MBSs and the quantum dots. The phase diagram of the Fermi energy versus the quantum dot energy levels was also investigated.« less
  • We investigate the transport properties of a quantum dot (QD) chain side-coupled to a pair of Majorana bound states (MBSs). It is found that the zero-bias conductance is tightly dependent on the parity of QD number. First, if a Majorana zero mode is introduced to couple to one QD of the odd-numbered QD structure, the zero-bias conductance is equal to (e{sup 2})/(2h) , but the zero-bias conductance will experience a valley-to-peak transition if the Majorana zero mode couples to the different QDs of the even-numbered QD structure. On the other hand, when the inter-MBS coupling is nonzero, the zero-bias conductancemore » spectrum shows a peak in the odd-numbered QD structure, and in the even-numbered QD structure one conductance valley appears at the zero-bias limit. These results show the feasibility to manipulate the current in a multi-QD structure based on the QD-MBS coupling. Also, such a system can be a candidate for detecting the MBSs.« less