TY - JOUR
T1 - Nonlocal supercurrent of quartets in a three-terminal Josephson junction
AU - Cohen, Yonatan
AU - Ronen, Yuval
AU - Kang, Jung-Hyun
AU - Heiblum, Moty
AU - Feinberg, Denis
AU - Melin, Regis
AU - Shtrikman, Hadas
N1 - D.F. and R.M. acknowledge support from L’Agence Nationale de la Recherche Nanoquartets 12-BS-10-007-04 and the Centre Régional Informatique et d’Applications Numériques de Normandie computing center. M.H. acknowledges the partial support of the Israeli Science Foundation (ISF), the Minerva Foundation, and the European Research Council (ERC) under the European Community’s Seventh Framework Program (FP7/2007-2013)/ERC Grant Agreement 339070. H.S. acknowledges partial support by ISF Grant 532/12, and Israel Ministry of Science and Technology (IMOST) Grants 0321-4801 and 3-8668. H.S. is incumbent of the Henry and Gertrude F. Rothschild Research Fellow Chair. Y.C. and Y.R. contributed equally to this work. Y.C., Y.R., M.H., and H.S. designed research; Y.C., Y.R., J.-H.K., M.H., D.F., R.M., and H.S. performed research; Y.C., Y.R., M.H., D.F., and R.M. contributed new reagents/analytic tools; Y.C., Y.R., D.F., and R.M. analyzed data; and Y.C., Y.R., M.H., D.F., R.M., and H.S. wrote the paper.
PY - 2018/7/3
Y1 - 2018/7/3
N2 - A novel nonlocal supercurrent, carried by quartets, each consisting of four electrons, is expected to appear in a voltage-biased three-terminal Josephson junction. This supercurrent results from a nonlocal Andreev bound state (ABS), formed among three superconducting terminals. While in a two-terminal Josephson junction the usual ABS, and thus the dc Josephson current, exists only in equilibrium, the ABS, which gives rise to the quartet supercurrent, persists in the nonlinear regime. In this work, we report such resonance in a highly coherent three-terminal Josephson junction made in an InAs nanowire in proximity to an aluminum superconductor. In addition to nonlocal conductance measurements, cross-correlation measurements of current fluctuations provided a distinctive signature of the quartet supercurrent. Multiple device geometries had been tested, allowing us to rule out competing mechanisms and to establish the underlying microscopic origin of this coherent nondissipative current.
AB - A novel nonlocal supercurrent, carried by quartets, each consisting of four electrons, is expected to appear in a voltage-biased three-terminal Josephson junction. This supercurrent results from a nonlocal Andreev bound state (ABS), formed among three superconducting terminals. While in a two-terminal Josephson junction the usual ABS, and thus the dc Josephson current, exists only in equilibrium, the ABS, which gives rise to the quartet supercurrent, persists in the nonlinear regime. In this work, we report such resonance in a highly coherent three-terminal Josephson junction made in an InAs nanowire in proximity to an aluminum superconductor. In addition to nonlocal conductance measurements, cross-correlation measurements of current fluctuations provided a distinctive signature of the quartet supercurrent. Multiple device geometries had been tested, allowing us to rule out competing mechanisms and to establish the underlying microscopic origin of this coherent nondissipative current.
U2 - https://doi.org/10.1073/pnas.1800044115
DO - https://doi.org/10.1073/pnas.1800044115
M3 - مقالة
SN - 0027-8424
VL - 115
SP - 6991
EP - 6994
JO - Proceedings Of The National Academy Of Sciences Of The United States Of America-Biological Sciences
JF - Proceedings Of The National Academy Of Sciences Of The United States Of America-Biological Sciences
IS - 27
ER -