Highlights

H. Wang, E. Gomez, J. Kim, Z. Guan, C. Jaye, D. Fischer (NIST, Gaithersburg), A. Kahn and Y.-L. Loo; Princeton University

Device characteristics under dark and illumination

Jun 20, 2011

New York University

New Ways to Fill Space with Tetrahedra and Octahedra

J. Conway, Y. Jiao, SalTorquato

Jun 17, 2011

Princeton University

Topological Surface States Penetrate Through Surface Barriers

J. Seo, P. Roushan, H. Beidenkopf, Y. S. Hor, R. J. Cava, and A. Yazdani, Princeton University

Topological surface states are a new class of novel electronic states that are potentially useful for quantum computing or spintronicapplications. Unlike conventional two-dimensional electron states, these surface states are expected to be immune to localization and to overcome barriers caused by material imperfection. Previous experiments have demonstrated that topological surface states do not backscatter between equal and opposite momentum states, due to their chiralspin texture.

Jun 16, 2011

Princeton University

See how they run... electrons on the surface of a novel insulator

Dong-Xia Qu, Y. S. Hor, Jun Xiong, R. J. Cava and N. P. Ong, Princeton University

Novel electronic applications often result from fresh theoretical insights into long-familiar materials. Recently, strong interest has focused on the “topological insulators”, notably Bi2Se3and Bi2Te3. In these solids, the electrons on the surface display highly unusual properties. For example, they travel like massless particles (photons and neutrinos), and are much less susceptible to scattering by lattice imperfections. To date, much of the information on topological insulators has come from photoemission experiments and scanning tunneling microscopy.

May 16, 2011

Yale University