Chin. Phys. Lett.  2014, Vol. 31 Issue (03): 037306    DOI: 10.1088/0256-307X/31/3/037306
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Probing Majorana Bound States in T-Shaped Junctions
WU Bin-He1**, CHENG Xiao1, WANG Chun-Rui1, GONG Wei-Jiang2
1Department of Applied Physics, Donghua University, Shanghai 201620
2College of Science, Northeastern University, Shenyang 110819
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WU Bin-He, CHENG Xiao, WANG Chun-Rui et al  2014 Chin. Phys. Lett. 31 037306
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Abstract

We investigate the transport properties of a pair of Majorana bound states in a T-shaped junction, where two normal leads are coupled with an identical Majorana bound state. Both the scattering matrix and the recursive Green function method show that the peak value of the differential conductance (Gpeak) in units of e2/h and the shot noise Fano factor in the zero bias limit (F0), which are measured at the same lead and zero temperature, satisfy a linear relation as F0=1+Gpeak/2, independent of the magnitude or symmetry of the coupling strengths to the leads. Therefore, combined measurements of the differential conductance and shot noise in the T-shaped geometry can serve as a characteristic signature in probing Majorana bound states.
Received: 28 October 2013      Published: 28 February 2014
PACS:  73.21.-b (Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems)  
  74.45.+c (Proximity effects; Andreev reflection; SN and SNS junctions)  
  74.78.Na (Mesoscopic and nanoscale systems)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/31/3/037306       OR      https://cpl.iphy.ac.cn/Y2014/V31/I03/037306
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WU Bin-He
CHENG Xiao
WANG Chun-Rui
GONG Wei-Jiang

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