Conductance-Matrix Symmetries of a Three-Terminal Hybrid Device.
Gerbold Menard,G. L. R. Anselmetti,Esteban Martínez,Denise Puglia,Filip K. Malinowski,Joon Sue Lee,Sukgeun Choi,Mihir Pendharkar,Chris Palmstrom,Karsten Flensberg,Charles Marcus,Lucas Casparis,Andrew Higginbotham +12 more
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In this paper, a three-terminal superconductor-semiconductor hybrid device consisting of two normal leads and one superconducting lead is analyzed using a symmetry decomposition of the conductance.Abstract:
We present conductance-matrix measurements of a three-terminal superconductor-semiconductor hybrid device consisting of two normal leads and one superconducting lead. Using a symmetry decomposition of the conductance, we find that antisymmetric components of pairs of local and nonlocal conductances qualitatively match at energies below the superconducting gap, and we compare this finding with symmetry relations based on a noninteracting scattering matrix approach. Further, the local charge character of Andreev bound states is extracted from the symmetry-decomposed conductance data and is found to be similar at both ends of the device and tunable with gate voltage. Finally, we measure the conductance matrix as a function of magnetic field and identify correlated splittings in low-energy features, demonstrating how conductance-matrix measurements can complement traditional single-probe measurements in the search for Majorana zero modes.read more
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From Andreev to Majorana bound states in hybrid superconductor–semiconductor nanowires
Elsa Prada,Pablo San-Jose,Michiel W. A. de Moor,Attila Geresdi,Eduardo J. H. Lee,Jelena Klinovaja,Daniel Loss,Jesper Nygård,Ramón Aguado,Leo P. Kouwenhoven +9 more
TL;DR: In this paper, the emergence and characterization of Majorana bound states in realistic devices based on hybrid semiconducting nanowires and their connection to more conventional Andreev bound states are discussed.
Journal ArticleDOI
Physical mechanisms for zero-bias conductance peaks in Majorana nanowires
Haining Pan,S. Das Sarma +1 more
TL;DR: In this paper, different mechanisms leading to zero-bias conductance peaks in Majorana nanowires are described. And they conclude that the experimentally observed zero bias peaks most likely arise from strong disorder in the system and are therefore not topological.
Journal ArticleDOI
From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires
Elsa Prada,Pablo San-Jose,Michiel W. A. de Moor,Attila Geresdi,Eduardo J. H. Lee,Jelena Klinovaja,Daniel Loss,Jesper Nygård,Ramón Aguado,Leo P. Kouwenhoven +9 more
TL;DR: In this paper, the main properties of Andreev bound states and Majorana bound states (MBSs) are reviewed and the state-of-the-art techniques for their detection are presented.
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Next steps of quantum transport in Majorana nanowire devices.
TL;DR: In this article, the authors summarize the key Majorana experiments and the potential challenges and summarize some of the major majorana physics in a more fundamental aspect, while making the first topological qubit based on these Majorana nanowires is currently an ongoing effort.
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Engineered platforms for topological superconductivity and Majorana zero modes
TL;DR: In this article, the basic physical principles on which these approaches are based, the materials systems that are being developed and the current state of the field are surveyed, highlighting both the progress that has been made and the challenges that still need to be overcome.
References
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Reciprocal Relations in Irreversible Processes. II.
TL;DR: In this article, a general reciprocal relation applicable to transport processes such as the conduction of heat and electricity, and diffusion, is derived from the assumption of microscopic reversibility, and certain average products of fluctuations are considered.
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Signatures of Majorana Fermions in Hybrid Superconductor-Semiconductor Nanowire Devices
Vincent Mourik,K. Zuo,Sergey Frolov,Sebastien Plissard,Epam Erik Bakkers,Epam Erik Bakkers,Leo P. Kouwenhoven +6 more
TL;DR: Electrical measurements on indium antimonide nanowires contacted with one normal (gold) and one superconducting (niobium titanium nitride) electrode support the hypothesis of Majorana fermions in Nanowires coupled to superconductors.
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Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
TL;DR: The measurement of the supercurrent through the junction allows one to discern topologically distinct phases and observe a topological phase transition by simply changing the in-plane magnetic field or the gate voltage, which will be a direct demonstration of the existence of Majorana particles.
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Helical Liquids and Majorana Bound States in Quantum Wires
TL;DR: It is argued that zero-energy Majorana bound states are formed in various situations when such wires are situated in proximity to a conventional s-wave superconductor when the external magnetic field, the superconducting gap, or the chemical potential vary along the wire.