The Turnbull Lecturer Award recognizes the career of a scientist who has made outstanding contributions to understanding materials phenomena and properties through research, writing, and lecturing, as exemplified by David Turnbull. (Find out more about the MRS Turnbull Lectureship)

The Turnbull Lecturer Award will be presented at the Award Ceremony on Wednesday evening at 6:30 p.m. in the Grand Ballroom of the Sheraton Boston Hotel.

Talk Presentation Abstract
Scientific interest, increased availability, and technological promise of highly enriched isotopes have led to a sharp rise in the number of experimental and theoretical studies with isotopically controlled semiconductor crystals. This talk will review results obtained with isotopically controlled semiconductor bulk and thin-film heterostructures. Isotopic composition affects several properties such as phonon energies, bandstructure, and lattice constant in subtle, but, for their physical understanding, significant ways. Large isotope-related effects are observed for thermal conductivity in local vibrational modes of impurities and after neutron transmutation doping (NTD). Spectacularly sharp photoluminescence lines have been observed in ultrapure, isotopically enriched silicon crystals. Isotope multilayer structures are especially well suited for simultaneous self- and dopant-diffusion studies. The absence of any chemical, mechanical, or electrical driving forces makes possible the study of an ideal random-walk problem. Last, but not least, isotopically controlled semiconductors may find applications in quantum computing, nanoscience, and spintronics.

Eugene E. Haller Biography
Eugene E. Haller received his PhD in nuclear and applied physics from the University of Basel, Switzerland. He is a professor of materials science and holds the Liao-Cho Innovation Endowed Chair at the University of California at Berkeley. He has a joint appointment at the Lawrence Berkeley National Laboratory where he heads the Electronic Materials Program. He has held visiting professorships at the Max-Planck-Institute for Solid State Research in Stuttgart, the Imperial College in London, the DLR (German Aerospace Corporation) in Berlin, and Keio University in Tokyo. His research interests cover a wide spectrum of semiconductor topics including basic semiconductor physics, thin-film and bulk-crystal growth, and advanced detectors for electromagnetic radiation ranging from the far-infrared to gamma rays, neutrinos, and dark matter. In recent years, he has pioneered numerous scientific studies and applications of isotopically controlled semiconductors. Awards include the Alexander von Humboldt U.S. Senior Scientist Award (1986), two Miller Research Professorships (1990) and (2001), the Max-Planck-Research Prize (1994) and the James McGroddy Prize for New Materials of the American Physical Society (1999). A fellow of the American Physical Society, he is also a member of the editorial advisory boards of the Journal of Applied Physics Reviews, Journal of Physics and Chemistry of Solids, and Materials Science Foundations.