1995 – 1998

1998

219. Hemley, R. J., A. F. Goncharov, V. V. Struzhkin, M. Somayazulu, and H. K. Mao, Transforming ice at Pressure Workshop, Nov. 14-16, 1998, Argonne, IL., (1998

218. Stixrude, L., R. E. Cohen and R. J. Hemley, Theory of minerals at high pressure, in Ultrahigh- Pressure Mineralogy: Physics and Chemistry of the Earth's Deep Interior, Rev. Min. (ed. R. J. Hemley) 639-671 (Mineralogical Society of America, Washington, D.C., 1998).

217. Mao, H. K. and R. J. Hemley, New windows on the Earth's deep interior, in Ultrahigh-Pressure Mineralogy: Physics and Chemistry of the Earth's Deep Interior, Rev. Min. Vol. 37 (ed. R. J. Hemley) 1-32 (Mineralogical Society of America, Washington, D.C., 1998).

216. Hemley, R. J., H. K. Mao and R. E. Cohen, High-pressure electronic and magnetic properties of minerals, in Ultrahigh-Pressure Mineralogy, Rev. Min., Vol. 37 (ed. R. J. Hemley) 591-638 (Mineralogical Society of America, Washington, D.C., 1998).

215. Gillet, P., R. J. Hemley and P. F. McMillan, Vibrational properties at high pressures and temperatures, in Ultrahigh-Pressure Mineralogy: Physics and Chemistry of the Earth's Deep Interior, Rev. Min. (ed. R. J. Hemley) 525-590 (Mineralogical Society of America, Washington, D.C., 1998).

214. Freiman, Yu. A., S. M. Tretyak, A. Jezowski, and R. J. Hemley, Broken symmetry phase transition in solid HD: quantum behavior, J. Low Temp. Phys., 113, 723-728 (1998). PDF

213. Hemley, R. J. and H. K. Mao, New phenomena in low-Z materials at megabar pressures. J. Phys.: Condens. Matter, 10, 11157-11167 (1998). PDF

212. Hemley, R. J., M. S. Somayazulu, A. F. Goncharov, and H. K. Mao, High-pressure Raman spectroscopy of Ar-H2 and CH4-H2 van der Waals compounds, Asian J. Phys., 7, 319-322 (1998).

211. Hemley, R. J., Superconductivity in a grain of salt, Science, 281, 1296-1297 (1998).

210. Mao, H. K., J. Shu, G. Shen, R. J. Hemley, B. Li, and A. K. Singh, Elasticity and rheology of iron above 200 GPa and the nature of the Earth's inner core, Nature, 396, 741-743, 1998; correction (1998). PDF

209. Duffy, T. S., G. Shen, D. L. Heinz, Y. Ma, R. J. Hemley, H. K. Mao and A. K. Singh, Lattice strains in gold and rhenium under non-hydrostatic pressure, in High-Pressure Materials Research. Materials Reseach Society Proceedings (eds. R. Wentzcovitch, Hemley, R. J., Nellis, W. J. and Yu, P.) 145-150 (Materials Research Society, Warrendale, PA, 1998).

208. Chou, I. M., J. Blank, A. F. Goncharov, H. K. Mao, and R. J. Hemley, In situ observations of a high-pressure phase of H2O ice, Science, 281, 809-811 (1998). (PDF

207. Freiman, Yu. A., S. M. Tretyak, A. Jezowski, R. J. Hemley, Broken symmetry phase transition in solid HD: a manifestation of quantum orientational melting, Low Temp. Phys., 24, 683-688 (1998).

206. Hemley, R. J. and N. W. Ashcroft, The revealing role of pressure in the condensed-matter sciences, Physics Today, 51, 26-32 (1998). PDF

205. Singh, A. K., A. Balasingh, H. K. Mao, R. J. Hemley and J. Shu, Analysis of lattice strains measured under non-hydrostatic pressure, J. Appl. Phys., 83, 7567-7575 (1998). PDF

204. Goncharov, A. F., R. J. Hemley, H. K. Mao, and J. Shu, New high-pressure excitations in para-hydrogen, Phys. Rev. Lett., 80, 101-104 (1998). PDF

203. Hemley, R. J., Matter, properties at high pressure and temperature, in Sciences of the Earth: An Encyclopedia of Events, People, and Phenomena (ed. G. A. Good) 523-535 (Garland Publishing, New York, New York, 1998).

202. Hemley, R. J., A. F. Goncharov, R. Lu, M. Li, V. V. Struzhkin and H. K. Mao, High-pressure synchrotron infrared spectroscopy at the National Synchrotron Light Source, II Nuovo Cimento D, 20, 539-551 (1998).

201. Singh, A. K., A. Balasingh, H. K. Mao, J. Shu and R. J. Hemley, Interpretation of the lattice strains measured under non-hydrostatic pressure, Review of High-Pressure Science and Technology, 7, 205-210 (1998).

200. Zha, C. S., T. S. Duffy, H. K. Mao and R. J. Hemley, Recent progress in high-pressure Brillouin scattering: olivine and H2O ice, Review of High-Pressure Science and Technology, 7, 739-741 (1998).

199. Shen, G., H. K. Mao, R. J. Hemley, T. S. Duffy, and M. L. Rivers, Melting and crystal structure of iron at high pressures and temperatures, Geophys. Res. Lett., 25, 373-376 (1998). PDF

198. Zha, C. S., T. S. Duffy, H. K. Mao, R. T. Downs and R. J. Hemley, High-pressure Brillouin scattering of San Carlos olivine, Earth Planet. Sci. Lett., 159, 25-34 (1998). PDF

197. Shieh, S., L. C. Ming, H. K. Mao and R. J. Hemley, Decomposition of phase D in the lower mantle and the fate of dense hydrous silicates in subducting slabs, Earth Planet. Sci. Lett., 159, 13-23 (1998). PDF

196. Teter, D. M., R. J. Hemley, G. Kress and J. Hafner, High-pressure polymorphism in silica, Phys. Rev. Lett., 80, 2145-2148 (1998). PDF

195. Shu, J., H. K. Mao, J. Hu, Y. Fei and R. J. Hemley, Single-crystal x-ray diffraction of wustite to 30 GPa hydrostatic pressure, Neues Jahr. Mineral., 172, 309-323 (1998).

194. Hemley, R. J., A. F. Goncharov, H. K. Mao, E. Karmon and J. H. Eggert, Spectroscopic studies of p-H2 to above 200 GPa, J. Low Temp. Phys., 110, 75-88 (1998). PDF

193. Yang, H., R. M. Hazen, C. T. Prewitt, L. W. Finger, R. Lu and R. J. Hemley, High-pressure single- crystal x-ray diffraction and infrared spectroscopic studies of the C2/m -P21/m phase transition in cummingtonite, Am. Mineral., 83, 288-299 (1998). PDF

192. Mao, H. K., G. Shen, R. J. Hemley and T. S. Duffy, X-ray diffraction with a double hot-plate laser- heated diamond cell, in Properties of the Earth and Planetary Materials at High Pressure and Temperature (eds. M. H. Manghnani and Yagi, T.) 27-34 (Am. Geophys. Union, Washington, DC, 1998).

191. Zha, C. S., T. S. Duffy, R. T. Downs, H. K. Mao, R. J. Hemley and D. J. Weidner, Single-crystal elasticity of the α and β polymorphs of Mg2SiO4 at high pressure, in Properties of Earth and Planetary Materials at High Pressure and Temperature (eds. M. H. Manghnani and Yagi, T.) 9-16 (A.G.U, Washington, D. C., 1998).

190. Hemley, R. J. and H. K. Mao, Static compression experiments on low-Z planetary materials, in Properties of Earth and Planetary Materials at High Pressure and Temperature (eds. M. Manghnani and Yagi, T.) 173-183 (American Geophysical Union, Washington, D. C., 1998).

189. Singh, A. K., H. K. Mao, J. Shu, and R. J. Hemley, Estimation of single-crystal elastic moduli from polycrystalline x-ray diffraction: application to FeO and iron, Phys. Rev. Lett., 80, 2157-2160 (1998). PDF

1997

188. Mao, H. K. and R. J. Hemley, High pressure and synchrotron radiation: the new era of megabar research, NSLS Newsletter, July, 4-13 (1997).

187. Yoo, C. S., J. Akella, A. J. Campbell, H. K. Mao, and R. J. Hemley, Detecting phases of iron, Science, 275, 94-96 (1997).

186. Mao, H. K., G. Shen and R. J. Hemley, Multivariable dependence of Fe/Mg partitioning in the Earth's lower mantle, Science, 278, 2098-2100 (1997). PDF

185. Somayazulu, M., R. J. Hemley, H. K. Mao, A. F. Goncharov and L. W. Finger, High-pressure compounds in the methane-hydrogen system: X-ray, infrared, and Raman studies of CH4(H2)2, Eur. J. Solid State Inorg. Chem., 34, 705-713 (1997).

184. Struzhkin, V. V., R. J. Hemley, H. K. Mao, and Yu. A. Timofeev, Superconductivity at 10 to 17 K in compressed sulfur, Nature, 390, 382-384 (1997). PDF

183. Struzhkin, V. V., Yu. A. Timofeev, R. J. Hemley, and H. K. Mao, Superconducting Tc and electron-phonon coupling in Nb to 132 GPa: magnetic susceptibility at megabar pressures, Phys. Rev. Lett., 79, 4262-4265 (1997). PDF

182. Hemley, R. J., Crystals that came in from the cold (Book Review of Physics of Cryocrystals, edited by V. G. Manzhelii and Yu. Freiman), Science, 276, 1519 (1997).

181. Struzhkin, V. V., A. F. Goncharov, R. J. Hemley, and H. K. Mao, Cascading Fermi resonances and the soft mode in dense ice, Phys. Rev. Lett., 78, 4446-4449 (1997). (PDF)

180. Badro, J., D. M. Teter, R. T. Downs, P. Gillet, R. J. Hemley, and J. L. Barrat, Theoretical study of a five-coordinated silica polymorph, Phys. Rev. B, 56, 5797-5806 (1997). PDF

179. Hemley, R. J., H. K. Mao, G. Shen, J. Badro, P. Gillet, M. Hanfland, and D. Häusermann, X-ray imaging of stress and strain of diamond, iron, and tungsten at megabar pressures, Science, 276, 1242-1245 (1997). PDF

178. Hemley, R. J., C. Meade, and H. K. Mao, Comment on "Medium-range order in permanently densified SiO2 and GeO2 glass," Phys. Rev. Lett., 79, 1420 (1997). PDF

177. Mao, H. K., R. J. Hemley and A. L. Mao, Diamond-cell research with synchrotron radiation, in Advances in High Pressure Research in Condensed Matter (ed. S. K. Sikka) 12-19 (NISCOM, New Delhi, India, 1997).

176. Zha, C. S., T. S. Duffy, R. T. Downs, H. K. Mao, R. J. Hemley, and D. J. Weidner, Single-crystal elasticity of β-Mg2SiO4 at high pressure, Earth Planet. Sci. Lett., 147, E9-E15 (1997). PDF

175. Hemley, R. J., Mineral physics, Geotimes, 42, 48-49 (1997).

174. Saxena, S. K., L. S. Dubrovinsky, C. S Yoo, J. Akella, A. J. Campbell, H. K. Mao, and R. J. Hemley, Detecting phases of iron, Science, 275, 94-96 (1997). PDF

173. Mazin, I. I., R. J. Hemley, A. F., Goncharov, M. Hanfland, and H. K. Mao, Quantum and classical orientational ordering in dense hydrogen, Phys. Rev. Lett., 78, 1066-1069 (1997). PDF

172. Hemley, R. J. and H. K. Mao, Static high-pressure effects in solids, in Encyclopedia of Applied Physics (ed. G. L. Trigg) 555-572 (VCH Publishers, New York, 1997).

171. Hemley, R. J., I. I. Mazin, A. F. Goncharov, and H. K. Mao, Vibron effective charges in dense hydrogen, Europhys. Lett., 37, 403-407 (1997). PDF

1996

170. Zha, C. S., T. S. Duffy, R. T. Downs, H. K. Mao, and R. J. Hemley, Sound velocity and elasticity of single-crystal forsterite to 16 GPa, J. Geophys. Res., 101, 17535-17545 (1996). PDF

169. Hemley, R. J., and N. W. Ashcroft, Shocking states of matter, Nature, 380, 671-672 (1996).

168. Goncharov, A. F., V. V. Struzhkin, M. S. Somayazulu, R. J. Hemley, and H. K. Mao, Compression of ice to 210 GPa: Infrared evidence for a symmetric hydrogen bonded phase, Science, 273, 218-220 (1996). PDF

167. Loubeyre, P., R. LeToullec, D. Häusermann, M. Hanfland, R. J. Hemley, H. K. Mao, and L. W. Finger, X-ray diffraction and equation of state of hydrogen at megabar pressures, Nature, 383, 702-704 (1996).

166. Shen, G., H. K. Mao and R. J. Hemley, Laser-heating diamond-anvil cell technique: double-sided heating with multimode Nd:YAG laser, in Advanced Materials '96 (eds. M. Akaishi, Arima, M., Irifune, T., Kikegawa, T., Kondo, K. and al, e.) 149-152 (N.I.R.I.M., Tskuba, Japan, 1996).

165. Goncharov, A. F., M. Somayazulu, V. V. Struzhkin, R. J. Hemley and H. K. Mao, New high- pressure low-temperature phase of methane, in Fifteenth International Conference on Raman Spectroscopy (eds. S. A. Asher and Stein, P.) 1042-1043 (Wiley, New York, 1996).

164. Hemley, R. J. and H. K. Mao, High-pressure Raman spectroscopy: New windows on matter under extreme conditions, in Fifteenth International Conference on Raman Spectroscopy (eds. S. A. Asher and Stein, P.) 1032-1033 (Wiley, New York, 1996).

163. Somayazulu, M., L. W. Finger, R. J. Hemley, and H. K. Mao, High-pressure compounds in methane-hydrogen mixtures, Science, 271, 1400-1402 (1996). PDF

162. Vos, W. L., L. W. Finger, R. J. Hemley, and H. K. Mao, Pressure dependence of hydrogen bonding in a novel H2O-H2 clathrate, Chem. Phys. Lett., 257, 524-530 (1996). PDF

161. Hemley, R. J., H. K. Mao, A. F. Goncharov, M. Hanfland, and V. V. Struzhkin, Synchrotron infrared spectroscopy to 0.15 eV of H2 and D2 at megabar pressures, Phys. Rev. Lett., 76, 1667-1670 (1996). PDF

160. Struzhkin, V. V., Y. Timofeev, R. T. Downs, R. J. Hemley and H. K. Mao, Tc(P) from magnetic susceptibility measurements of high-temperature superconductors: YBa2Cu3O7-x and HgBa2Ca2Cu3O8+x, in High Pressure Science and Technology (ed. W. A. Trzeciakowski) 682-684 (World Scientific, Warsaw, Poland, 1996).

159. Goncharov, A. F., I. I. Mazin, J. H. Eggert, R. J. Hemley and H. K. Mao, Orientational order, disorder, and possible glassy behavior in deuterium at high pressure, in High Pressure Science and Technology (ed. W. A. Trzeciakowski) 533-535 (World Scientific, Warsaw, Poland, 1996).

158. Mao, H. K. and R. J. Hemley, Solid hydrogen at ultrahigh pressures, in High Pressure Science and Technology (ed. W. A. Trzeciakowski) 505-510 (World Scientific, Warsaw, Poland, 1996).

157. Hemley, R. J., and H. K. Mao, Dense molecular hydrogen: Order, disorder, and localization, J. Non-Cryst. Solids, 205/207, 282-289 (1996). (PDF)

156. Goncharov, A. F., J. H. Eggert, I. I. Mazin, R. J. Hemley, and H. K. Mao, Raman excitations and orientational ordering in deuterium at high pressure, Phys. Rev. B, 54, 15590-15593 (1996). PDF

155. Teter, D. M., and R. J. Hemley, Low-compressibility carbon nitrides, Science, 271, 53-55 (1996). PDF

154. Mao, H. K., and R. J. Hemley, Experimental study of the Earth's deep interior: accuracy and versatility of diamond cells, Proc. Roy. Soc. London A, 354, 1315-1332 (1996).

153. Hemley, R. J., and R. E. Cohen, Structure and bonding in the deep mantle and core, Proc. Roy. Soc. London A, 354, 1315-1332 (1996).

152. McMillan, P. F., R. J. Hemley and P. Gillet, Vibrational spectroscopy of mantle minerals, in Mineral Spectroscopy: A Tribute to Roger Burns (eds. M. D. Dyar, McCammon, C. and Schaefer, M. W.) 175-213 (Geochemical Society, Houston, Texas, 1996).

151. Bundy, F. P., W. A. Bassett, M. S. Weathers, R. J. Hemley, H. K. Mao, and A. F. Goncharov, The pressure-temperature phase and transformation diagram for carbon; updated through 1994, Carbon, 34, 141-153 (1996). PDF

150. Mao, H. K., J. F. Shu, Y. Fei, J. Hu, and R. J. Hemley, The wüstite enigma, Phys. Earth Planet. Inter., 96, 135-145 (1996). PDF

149. Kingma, K. J., H. K. Mao, and R. J. Hemley, Synchrotron x-ray diffraction of SiO2 to multimegabar pressures, High Press. Res., 14, 363-374 (1996).

148. Mao, H. K., and R. J. Hemley, Energy dispersive x-ray diffraction of micro-crystals at ultrahigh pressures, High Pressure Res., 14, 257-267 (1996).

147. McMillan, P. F., J. Dubessy and R. J. Hemley, Applications in Earth, planetary and environmental sciences, in Raman Microscopy: Developments and Applications (eds. G. Turrell and Corset, J.) 289-365 (Academic, New York, 1996).

1995

146. Goncharov, A. F., I. I. Mazin, J. H. Eggert, R. J. Hemley, and H. K. Mao, Invariant points and phase transitions in deuterium at megabar pressures, Phys. Rev. Lett., 75, 2514-2517 (1995).PDF

145. Duffy, T. S., C. S. Zha, R. T. Downs, H. K. Mao, and R. J. Hemley, Elasticity of forsterite to 16 GPa and the composition of the upper mantle, Nature, 378, 170-173 (1995).

144. Hemley, R. J., Turning off the water, Nature, 378, 14-15 (1995).

143. Hemley, R. J., Sound and fury in Jupiter, Science, 269, 1233-1234 (1995). PDF

142. Yoo, C. S., J. Akella, A. J. Campbell, H. K. Mao, R. J. Hemley, Phase diagram of iron by in-situ x-ray diffraction: implications for the Earth's core, Science, 270, 1473-1475 (1995). PDF

141. Duffy, T. S., J. Shu, H. K. Mao, and R. J. Hemley, Single-crystal x-ray diffraction of brucite to 14 GPa, Phys. Chem. Minerals, 22, 277-281 (1995).

140. Hemley, R. J., H. K. Mao, T. S. Duffy, J. H. Eggert, A. F. Goncharov, M. Hanfland, M. Li, M. Somayazulu, W. Vos, and C. S. Zha, Dense hydrogen on the outer solar system: implications from recent high-pressure experiments, in Deep Earth and Planetary Volatiles (ed. K. Farley) 250-260 (American Institute of Physics, New York 1995).

139. Duffy, T. S., R. J. Hemley, and H. K. Mao, Structure and bonding in hydrous minerals at high pressure: Raman spectroscopy of alkaline earth hydroxides, in Deep Earth and Planetary Volatiles (ed. K. Farley) 211-220 (American Institute of Physics, New York 1995).

138. Kingma, K. J., R. E. Cohen, R. J. Hemley, and H. K. Mao, Transformation of silica to a denser phase at lower mantle pressures, Nature, 374, 243-245 (1995).

137. Hemley, R. J. and H. K. Mao, Progress on hydrogen at ultrahigh pressures, in Elementary Processes in Dense Plasmas (eds. S. Ichimaru and S. Ogata) 269-280 (Addison-Wesley, Reading, Mass 1995).

136. Soos, Z. G., J. H. Eggert, R. J. Hemley, M. Hanfland, and H. K. Mao, Charge-transfer states and electron-vibron coupling in dense solid hydrogen, Chem. Phys., 200, 23-39 (1995). PDF

135. Mao, H. K., J. H. Eggert, and R. J. Hemley, Reflectance effects caused by refractive-index gradients in diamond-anvil cell samples of H2 and Al2O3, Mod. Phys. Lett. B, 9, 201-208 (1995).

134. Duffy, T. S. and R. J. Hemley, Temperature structure of the Earth, Rev. Geophys. (U. S. National Report to IUGG, 1991-1995, 33 (Suppl.), 5-9 (1995).

133. Feldman, J. L., J. H. Eggert, J. DeKinder, R. J. Hemley, H. K. Mao, and D. Schoemaker, Vibron excitations in solid hydrogen: A generalized binary random alloy problem, Phys. Rev. Lett., 74, 1379-1382 (1995). PDF

132. Duffy, T. S., R. J. Hemley, and H. K. Mao, Equation of state and shear strength at multimegabar pressures: magnesium oxide to 227 GPa, Phys. Rev. Lett., 74, 1371-1374 (1995).

131. Duffy, T. S., C. Meade, Y. Fei, H. K. Mao, and R. J. Hemley, High-pressure phase transition in brucite Mg(OH)2, Am. Mineral., 80, 222-230 (1995).

130. Hanfland, M., R. J. Hemley, and H. K. Mao, Reply to Comment by A. L. Ruoff and K. Ghandehari on "Optical absorption measurements on hydrogen at megabar pressures," Phys. Rev. B., 52, 1408-1410 (1995). PDF