Supercurrents Get Lean

Spin-polarized supercurrents for spintronics

Manipulating Majorana fermions using supercurrents

Topological insulator edges and spin-orbit-coupled quantum wires in proximity to s-wave superconductors can be tuned through a topological quantum phase transition by a Zeeman field. Here we show that a supercurrent flowing in the s-wave superconductor also drives such a transition. We propose to use this mechanism to generate and manipulate Majorana fermions that localize at domain walls betwe...

Supercurrents in color-superconducting quark matter

We review the basic properties of the currCFL-K phase in dense quark matter. At asymptotically large densities, three-flavor quark matter is in the color-flavor locked (CFL) state. The currCFL-K state is a way to respond to “stress” on the quark Cooper pairing, imposed at more moderate densities by the strange quark mass and the conditions of electric and color neutrality. We show how a kaon su...

Upper limit on spontaneous supercurrents in Sr2RuO4

J. R. Kirtley,1,2,3 C. Kallin,4 C. W. Hicks,1 E.-A. Kim,5,6 Y. Liu,7 K. A. Moler,1,5 Y. Maeno,8 and K. D. Nelson7 1Department of Applied Physics, Stanford University, Palo Alto, California 94305, USA 2IBM Watson Research Center, Yorktown Heights, New York 10598, USA 3Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, The Netherlands...

Lean Maturity, Lean Sustainability

Although lean is rapidly growing in popularity, its implementation is far from problem free and companies may experience difficulties sustaining long term success. In this paper, it is suggested that sustainable lean requires attention to both performance improvement and capability development. A framework for describing levels of lean capability is presented, based on a brief review of the lit...