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| Graduate Student |
| NAME |
Brian Maddox |
| PHONE |
(925)422-4345 |
| FAX |
(925)422-5940 |
| E-MAIL |
Maddox3@llnl.gov |
| ADDRESS |
Lawrence Livermore National Lab
7000 East Avenue, L-415
Livermore, CA 94550 |
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Brian Maddox is currently a graduate student
at the University of California, Davis, working toward his
Ph.D in Physics. He was awarded the SEGRF fellowship at LLNL
in September 2002 to conduct reasearch under the supervision
of Choong-Shik Yoo at LLNL and Warren E. Pickett and Richard
T. Scalettar at UC Davis. His graduate research activites
include the investigation of the structural and electronic
properties of transition metal oxides, half metals, and rare-earth
metals at high pressures. These materials allow one to study
a broad range of physical phenomenon including structural
phase transitions such as the rutile-CaCl2 transition in CrO2,
metal-insulator transitions like the Mott transition in MnO,
and f-electron delocalization as seen in the rare-earths.
To study these phenomenon he uses a variety
of experimental techniques including Raman spectroscopy, powder
x-ray diffraction, X-ray Emission Spectroscopy(XES), and Resonant-Inelastic
X-ray Scattering(RIXS). Brian Maddox graduted with a Bachelors
Degree in Physics from California State University, Hayward
in 2001 and was accepted at UC Davis the same year. He has
been with the High Pressure Physics Group at LLNL since 2002.
He also enjoys many hobbies including martial arts, playing
music, moutain biking, and snowboarding and recieved his Private
Pilot's license in October 2003. |
C. S. Yoo, B. Maddox, J. -H. P. Klepeis, V. Iota, W. Evans,
A. McMahan, M. Hu, P. Chow, M. Somayazulu, D. Hausermann, R.
T. Scalettar, and W. E. Pickett, "First-order Isostructural
Mott transition in highly compressed MnO", Phys. Rev.
Lett. 94(11), 115502 (2005) [pdf]
A. Lazicki, B. Maddox, W. J. Evans, C. S. Yoo, W. E. Pickett,
R. T. Scalettar, M. Hu, P. Chow, "PA New High Pressure Phase
of Li3N: Stability of the N3- Ion to 200 GPa", Phys Rev
Lett. 95, 165503 (2005)
[pdf]
B. R. Maddox, A. Lazicki, C. S. Yoo, V. Iota, M. Chen, A. K.
McMahan, M. Y. Ho, P. Chow, R. T. Scalettar, and W. E. Pickett,
"Kondo-like 4f delocalization in Gd at high pressure", Phys.
Rev. Lett., (submitted)
B. R. Maddox, C. S. Yoo, Deepa Kasinathan, W. E. Pickett, R.
T. Scalettar, "Second-order rutile-to-CaCl2 phase transition
in CrO2 at high pressure", Phys. Rev. B, (submitted) |
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