Browse Physics

Published April 6, 2009

Mesoscopics Semiconductor Physics

Random disorder in topological insulators leads to an insulating phase reminiscent of one known for years in two-dimensional systems.

Published March 9, 2009

Mesoscopics Semiconductor Physics

The finding of one-dimensional, topologically protected conducting states on the surface of bismuth suggests the possibility of a quantum spin Hall effect in one dimension.

Published November 17, 2008

Semiconductor Physics

The transport anomalies found in a bismuth alloy under moderate magnetic field might be the signature of unexpected many-body physics.

Published September 8, 2008

Mesoscopics Semiconductor Physics

A new study is looking at how disorder affects the conducting states in a topological insulator—revealing one of many ways these unusual materials are different from conventional insulators.

Published September 5, 2008

Graphene Semiconductor Physics

Metallic contacts, which are unavoidable in any connection to an experimental measurement, cause asymmetries in the conductance of electrons and holes in graphene.