Splitting of a Cooper Pair by a Pair of Majorana Bound States

Johan Nilsson; A. R. Akhmerov; C. W. J. Beenakker

doi:10.1103/PhysRevLett.101.120403

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Splitting of a Cooper Pair by a Pair of Majorana Bound States

Johan Nilsson, A. R. Akhmerov, C. W. J. Beenakker

DOI 10.1103/PhysRevLett.101.120403 · Physical Review Letters

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Abstract

We propose a method to probe the nonlocality of a pair of Majorana bound states by crossed Andreev reflection, which is the injection of an electron into one bound state followed by the emission of a hole by the other (equivalent to the splitting of a Cooper pair). We find that, at sufficiently low excitation energies, this nonlocal scattering process dominates over local Andreev reflection involving a single bound state. As a consequence, the low-temperature and low-frequency fluctuations δIi of currents into the two bound states i=1, 2 are maximally correlated: δI1δI2¯=δIi2¯.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
BiSb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown