Quantized Majorana conductance
Quantized Majorana conductance
Nature 556, 7699 (2018). doi:10.1038/nature26142
Authors: Hao Zhang, Chun-Xiao Liu, Sasa Gazibegovic, Di Xu, John A. Logan, Guanzhong Wang, Nick van Loo, Jouri D. S. Bommer, Michiel W. A. de Moor, Diana Car, Roy L. M. Op het Veld, Petrus J. van Veldhoven, Sebastian Koelling, Marcel A. Verheijen, Mihir Pendharkar, Daniel J. Pennachio, Borzoyeh Shojaei, Joon Sue Lee, Chris J. Palmstrøm, Erik P. A. M. Bakkers, S. Das Sarma & Leo P. Kouwenhoven
Majorana zero-modes—a type of localized quasiparticle—hold great promise for topological quantum computing. Tunnelling spectroscopy in electrical transport is the primary tool for identifying the presence of Majorana zero-modes, for instance as a zero-bias peak in differential conductance. The height of the Majorana zero-bias peak is predicted to be quantized at the universal conductance value of 2e2/h at zero temperature (where e is the charge of an electron and h is the Planck constant), as a direct consequence of the famous Majorana symmetry in which a particle is its own antiparticle. The Majorana symmetry protects the quantization against disorder, interactions and variations in the tunnel coupling. Previous experiments, however, have mostly shown zero-bias peaks much smaller than 2e2/h, with a recent observation of a peak height close to 2e2/h. Here we report a quantized conductance plateau at 2e2/h in the zero-bias conductance measured in indium antimonide semiconduc...
Source: Nature - Category: Research Authors: Hao Zhang Chun-Xiao Liu Sasa Gazibegovic Di Xu John A. Logan Guanzhong Wang Nick van Loo Jouri D. S. Bommer Michiel W. A. de Moor Diana Car Roy L. M. Op het Veld Petrus J. van Veldhoven Sebastian Koelling Marcel A. Verheijen Mihir Pendharkar Daniel J. Pen Tags: Letter Source Type: research
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