Tonica (Tony) Valla

 

Physicist, Electron Spectroscopy

 

Fellow, American Physical Society

 

Condensed Matter Physics & Materials Science Dept. - Bldg. 734

Brookhaven National Laboratory

734 Brookhaven Avenue

P.O. Box 5000

Upton, NY 11973-5000

 

Tel: (631) 344-3530/5701

Fax: (631) 344-2739

email: valla@bnl.gov

 

 

 

Recent Publications

 

Persistent coherence and spin polarization of topological surface states on topological insulators, Z.-H. Pan, E. Vescovo, A. V. Fedorov, G. D. Gu, and T. Valla, Phys. Rev. B 88, 041101(R) (2013).

 

Measurement of an exceptionally weak electron-phonon coupling on the surface of the topological insulator Bi₂Se₃ using angle-resolved photoemission spectroscopy, Z.-H. Pan, A.V. Fedorov, D. Gardner, Y. S. Lee, S. Chu, and T. Valla, Phys. Rev. Lett. 108 187001 (2012).

 

Photoemission spectroscopy of magnetic and nonmagnetic impurities on the surface of the Bi₂Se₃ topological insulator, T. Valla, Z.-H. Pan, D. Gardner, Y. S. Lee, and S. Chu, Phys. Rev. Lett. 108, 117601 (2012).

 

Electronic structure of the topological insulator Bi₂Se₃ using angle-resolved photoemission spectroscopy: Evidence for a nearly full surface spin polarization, Z.-H. Pan, E. Vescovo, A. V. Fedorov, D. Gardner, Y. S. Lee, S. Chu, G. D. Gu, and T. Valla, Phys. Rev. Lett. 106, 257004 (2011).

 

Anisotropic electron-phonon coupling and dynamical nesting on the graphene sheets in superconducting CaC₆ using angle-resolved photoemission spectroscopy, T. Valla, J. Camacho, Z.-H. Pan, A. V. Fedorov, A. C. Walters, C. A. Howard, and M. Ellerby, Phys. Rev. Lett. 102, 107007 (2009).

 

Other notable works

 

Ground state of the pseudogap in cuprate superconductors, T. Valla, A. V. Fedorov, Jinho Lee, J. C. Davis, and G. D. Gu, Science 314, 1914 (2006)

 

Evidence for quantum critical behavior in the optimally-doped cuprate Bi₂Sr₂CaCu₂O_8+d, T. Valla, A. V. Fedorov, P. D. Johnson, B. O. Wells, S. L. Hulbert, Q. Li, G. D. Gu, and N. Koshizuka, Science 285, 2110 (1999)

 

 

Last update on: 17 Jun 2022.