Universal transport signatures of Majorana fermions in superconductor-Luttinger liquid junctions
نویسندگان
چکیده
Lukasz Fidkowski,1 Jason Alicea,2 Netanel H. Lindner,3, 4 Roman M. Lutchyn,1 and Matthew P. A. Fisher5 Station Q, Microsoft Research, Santa Barbara, CA 93106-6105 Department of Physics and Astronomy, University of California, Irvine, CA 92697 Institute of Quantum Information, California Institute of Technology, Pasadena, CA 91125 Department of Physics, California Institute of Technology, Pasadena, CA 91125, USA Department of Physics, University of California, Santa Barbara, CA 93106 (Dated: June 21, 2012)
منابع مشابه
Weyl spin liquids.
The fractionalization of quantum numbers in interacting quantum many-body systems is a central motif in condensed-matter physics with prominent examples including the fractionalization of the electron in quantum Hall liquids or the emergence of magnetic monopoles in spin-ice materials. Here, we discuss the fractionalization of magnetic moments in three-dimensional Kitaev models into Majorana fe...
متن کاملSuperconducting proximity effect and majorana fermions at the surface of a topological insulator.
We study the proximity effect between an s-wave superconductor and the surface states of a strong topological insulator. The resulting two-dimensional state resembles a spinless px+ipy superconductor, but does not break time reversal symmetry. This state supports Majorana bound states at vortices. We show that linear junctions between superconductors mediated by the topological insulator form a...
متن کاملTunneling into one-dimensional Josephson chains and Luttinger liquids
One-dimensional arrays of Josephson junctions have been studied because of their unusual zero-temperature superconductor-insulator phase transitions. Furthermore, their low-energy Hamiltonian coincides with that of a Luttinger liquid. Hence 1-D Josephson junction arrays provide a physical realization of this model system. In order to explore these similarities we discuss 1-D arrays with defects...
متن کاملTopological Kondo effect with Majorana fermions.
The Kondo effect is a striking consequence of the coupling of itinerant electrons to a quantum spin with degenerate energy levels. While degeneracies are commonly thought to arise from symmetries or fine-tuning of parameters, the recent emergence of Majorana fermions has brought to the fore an entirely different possibility: a topological degeneracy that arises from the nonlocal character of Ma...
متن کاملMajorana fermion induced resonant Andreev reflection.
We describe experimental signatures of Majorana fermion edge states, which form at the interface between a superconductor and the surface of a topological insulator. If a lead couples to the Majorana fermions through electron tunneling, the Majorana fermions induce resonant Andreev reflections from the lead to the grounded superconductor. The linear tunneling conductance is 0 (2e(2)/h) if there...
متن کامل