Volume 114, Number 2, April 2016
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||10 May 2016|
Detecting Majorana fermions by use of superconductor-quantum Hall liquid junctions
1 School of Physics and Engineering, Henan University of Science and Technology - Luoyang 471003, China
2 National Laboratory of Solid State Microstructures, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University - Nanjing 210093, China
Received: 9 March 2016
Accepted: 26 April 2016
The point contact tunnel junctions between a one-dimensional topological superconductor and single-channel quantum Hall (QH) liquids are investigated theoretically with bosonization technology and renormalization group methods. For the integer QH liquid, the universal low-energy tunneling transport is governed by the perfect Andreev reflection fixed point with quantized zero-bias conductance , which can serve as a definitive fingerprint of the existence of a Majorana fermion. For the Laughlin fractional QH liquids, its transport is governed by the perfect normal reflection fixed point with vanishing zero-bias conductance and bias-dependent conductance . Our setup is within reach of the present experimental techniques.
PACS: 73.43.-f – Quantum Hall effects / 74.45.+c – Proximity effects; Andreev reflection; SN and SNS junctions / 64.60.ae – Renormalization-group theory
© EPLA, 2016
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.