John J. Neumeier, Ph.D
Selected Honors, Awards, and Public Outreach/Service:
- 2013 Fellow of the American Physical Society.
- 2009 Undergraduate Lecturing Instructor Award, from the Society of Physics Students at MSU.
- 2002 Florida Atlantic University Distinguished Teacher of the Year Award.
- 2001 Teacher Incentive Program Award, for excellence in teaching at Florida Atlantic University.
- 1999 National Science Foundation CAREER Award.
- 2012-2013 Chair of Faculty Senate
- 2010-2012 Chair-Elect of Faculty Senate
- 2007-present Professor at Montana State University.
- 2002-2007 Associate Professor at Montana State University.
- 1996-2002 Assistant Professor at Florida Atlantic University.
- 1993-1996 Postdoctoral Fellow at Los Alamos National Laboratory.
- 1990-1993 Postdoctoral Research at the University of Munich, Germany.
- 1990 Ph.D. in Physics, University of California, San Diego.
- 1986 M.S. in Physics, University of California, San Diego.
- 1984 B.S. in Physics, Stockton State College, New Jersey.
Our research involves studying the physical properties of novel condensed matter materials. Most recently, we are investigating low-dimensional solids. These are compounds that have highly anisotropic magnetic, electrical and thermal properties. Many of our experiments focus on phase transitions and the connection between structure and physical properties. This research program targets fundamental, rather than applied physics. Much of our work involves the growth and characterization of single crystals, which allows control of the samples used in our experiments. We grow crystals using a NEC optical image furnace, vapor transport, and a temperature-gradient-flux method. We have also developed our own technique for measuring the thermal expansion of solids using capacitive dilatometry (see Rev. Sci. Instrum. 79 (2008) 33903 Click for pdf). This project utilizes a novel thermal expansion cell constructed of fused silica (quartz). In addition, we are currently developing a cell made of single-crystal sapphire, to take advantage of its superior thermal conductivity. We fabricated these thermal expansion cells in our machine shop. Our measurements are conducted in the temperature range from 0.3 K to 1000 K. They include electrical resistivity, heat capacity, magnetic susceptibility, thermal expansion, and the use of neutron and x-ray diffraction to investigate crystal and magnetic structures.
(Over 145 publications in peer-reviewed journals.)
- Transition from one-dimensional antiferromagnetism to three-dimensional antiferromagnetic order in single-crystalline CuSb2O6, A. Rebello, M. G. Smith, J. J. Neumeier, B. D. White and Yi-Kuo Yu, Phys. Rev. B 87 (2013) 224427.
- Giant negative thermal expansion in La-doped CaFe2As2, A. Rebello, J. J. Neumeier, Zhaoshun Gao, Yanpeng Qi, and Yanwei Ma, Phys. Rev. B 86 (2012) 104303.
- Giant Nernst Effect and Bipolarity in the Quadi-One-Dimensional Metal Li0.9Mo6O17, J. L. Cohn, B. D. White, C. A. M. dos Santos, and J. J. Neumeier, Phys. Rev. Lett. 108 (2012) 056604.
- Observation of a Martensitic Structural Distortion in V, Nb, and Ta, R. K. Bollinger, B. D. White, J. J. Neumeier, H. R. Z. Sandim, Y. Suzuki, C. A. M. dos Santos, R. Avci, A. Migliori, and J. B. Betts, Phys. Rev. Lett. 107 (2011) 075503.
- Electrical transport in single-crystalline Li0.9Mo6O17: A two-band Luttinger liquid exhibiting Bose metal behavior, C. A. M. dos Santos, M. S. da Luz, Yi-Kuo Yu, J. J. Neumeier, J. Moreno, and B. D. White, Phys. Rev. B 77 (2008) 193106. Click for pdf
- Capacitive-Based Dilatometer Cell Constructed of Fused Quartz for Measuring the Thermal Expansion of Solids, J. J. Neumeier, R. K. Bollinger, G. E. Timmins, C. R. Lane, R. D. Krogstad, and J. Macaluso, Rev. Sci. Instrum. 79 (2008) 33903. Click for pdf
- Dimensional crossover in the purple bronze Li0.9Mo6O17, C. A. M. dos Santos, B. D. White, Yi-Kuo Yu, J. J. Neumeier, and J. A. Souza, Phys. Rev. Lett. 98 (2007) 266405. Click for pdf
- Impurity conduction and magnetic polarons in antiferromagnetic oxides, C. Chiorescu, J. L. Cohn, and J. J. Neumeier, Phys. Rev. B. Rapid Communications 76 (2007) 20404.
- Method for analyzing second-order phase transitions: Application to the ferromagnetic transition of a polaronic system, J. A. Souza, Y-K. Yu, J. J. Neumeier, H. Terashita, and R. F. Jardim, Phys. Rev. Lett., 94 (2005) 207209 (4 pages). Click for pdf
- Negative thermal expansion of MgB2 in the superconducting state and anomalous behavior of the bulk Grüneisen parameter, J. J. Neumeier, T. Tomita, M. Debassai, J. S. Schilling, P. W. Barnes, D. G. Hinks, and J. D. Jorgensen, Phys. Rev. B Rapid Commun. 72 (2005) 220505(R). Click for pdf
Investigations of dimensionally-constrained fermions, US Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Award No. DE-SC0016156, ending 7/31/2019
(Some recent presentations by postdocs and students.)
- High-Resolution Thermal Expansion Measurements of H2O Ice, DAVID T.W. BUCKINGHAM, SUELI H. MASUNAGA, FORREST C. GILE, J.J. NEUMEIER, March Meeting of The American Physical Society, Denver, CO 2014
- High-resolution thermal expansion measurements of BaCuSi4O10 and BaCuSi2O6, SUELI MASUNAGA, ALWYN REBELLO, J.J. NEUMEIER, March Meeting of The American Physical Society, Denver, CO 2014.
- Transition from short-range to long-range antiferromagnetic order in single-crystalline CoSb2O6, AARON B. CHRISTIAN, A. REBELLO, M.G. SMITH, J.J. NEUMEIER, March Meeting of The American Physical Society, Denver, CO 2014.
- Single-Crystal Growth of the Low-Dimensional Antiferromagnet NiTa2O6, AARON SCHYE, SUELI MASUNAGA, J.J. NEUMEIER, March Meeting of The American Physical Society, Denver, CO 2014.