2011 – 2017

2017

637. Ransom, T. C., M. Ahart, R. J. Hemley, and C. M. Roland, Vitrification and density scaling of polyurea at pressures up to 6 GPa, Macromolecules, submitted.

636. Geballe, Z. M., H. Liu, A. K. Mishra, M. Ahart, M. Somayazulu, Y. Meng, M. Baldini, and R. J. Hemley, Synthesis and stability of lanthanum superhydrides, Angew Chem., submitted

635. Ying, J., X. J. Chen, N. L. Wang, X. J. Chen, A. G. Gavriliuk, I. I. Naumov, R. J. Hemley, I. I. Mazin, and V. V. Struzhkin, Fermi surface reconstruction in 2H-TaSe2 under high pressure mediated by interlayer interaction, Phys. Rev. X, submitted.

634. Naumov, I. I. and R. J. Hemley, Metallic surface states in elemental electrides, Phys. Rev. B., in press

633. Ahart, M., M. Somayazulu, D. Popov, Y. Xie, X. Long, Z. G. Ye, R. E. Cohen, and R. J. Hemley, Pressure-induced transitions in ferroelectric single-crystal PbZr0.54Ti0.46O3, Ferroelectrics, submitted.

632. Hemawan, K. W. and R. J. Hemley, Microwave plasmas: Single crystal diamond synthesis, in Encyclopedia of Plasma Technology (Taylor and Francis, in press).

631. Rodgers, J. M., R. J. Hemley, and T. Ichiye, Quasiharmonic analysis of protein energy landscapes from pressure-temperature molecular dynamics simulations, J. Chem. Phys. 147, 125103 (2017).

630. Zha, C. S., H. Liu, J. S. Tse, and R. J. Hemley, Melting and high P-T transitions of hydrogen to 300 GPa, Phys. Rev. Lett. 119, 075302 (2017).

629. Ahart, M., D. Aihaiti, R. J. Hemley, and S. Kojima, Pressure dependence of the Boson peak of glassy glycerol, J. Phys. Chem. C 119, 6667-6672 (2017).

628. Vadapoo, R., M. Ahart, M. Somayazulu, N. Holtgrewe, Y. Meng, Z. Konôpková, R. J. Hemley, and R. E. Cohen, Synthesis of a polar ordered oxynitride perovskite, Phys. Rev B. 95, 214120 (2017).

627. Liu, H., I. I. Naumov, R. Hoffmann, N. W. Ashcroft, and R. J. Hemley, Potential high-Tsuperconducting lanthanum and yttrium hydrides at high pressure, Proc. Natl. Acad. Sci., 10.1073/pnas.1704505114 (2017).

626. Yim, W. L., H. Shi, Y. Liang, R. J. Hemley, and J. S. Tse, Band gaps and effective oscillator models for solid hydrogen and H2O ice at high pressure, in Correlations in Condensed Matter under Extreme Conditions (eds. G. G. N. Angilella and La Magna, A.), 107-126 (World Scientific, 2017).

625. Miao, M., R. Hoffmann, I. I. Naumov, and R. J. Hemley, Quasimolecules in compressed lithium, Agnew. Chem. Int. Ed., 56, 972-975 (2017).

624. Huang, Q., J. M. Rodgers, R. J. Hemley, and T. Ichiye, Extreme biophysics: Enzymes under pressure, J. Comput. Chem. 38, 1174-1182 (2017).

2016

623. Liu, H., I. I. Naumov, and R. J. Hemley, Dense hydrocarbon structures at megabar pressures, J. Phys. Chem. Lett. 7, 4281-4222 (2016).

622. Naumov, I. I. and R. J. Hemley, Topological surface states in dense solid hydrogen, Phys. Rev. Lett. 117, 206403 (2016).

621. Vinitsky, E. A., T. Muramatsu, M. Somayazulu, W. K. Wanene, Z. Liu, D. Chandra, and R. J. Hemley, Structural, vibrational, and electronic properties of BaReH9 under pressure, J. Phys.: Cond. Matt. 28, 5057001 (2016).

620. Strobel, T. A., M. Somayazulu, S. V. Sinogeikin, P. Dera, and R. J. Hemley, Hydrogen-stuffed, quartz-like water ice, J. Am. Chem. Soc. 138, 13786-13789 (2016).

619. Feng, B., V. I. Levitas, and R. J. Hemley, Large elastoplasticity under static megabar pressures: formulation and application to compression of samples in diamond anvil cells, Int. J. Plasticity 84, 33-57 (2016).

618. Hemawan, K. W., D. W. Keefer, J. V. Badding, and R. J. Hemley, Generation of microwave capillary argon plasmas at atmospheric pressure, IEEE Trans. Plasma Sci. PP, 33-57 (2016).

617. Muramatsu, T., L. V. Gasparov, H. Berger, R. J. Hemley, and V. V. Struzhkin, Electrical resistance of single-crystal magnetite (Fe3O4) under quasi-hydrostatic pressures up to 100 GPa, J. Appl. Phys., 119, 135903 (2016).

616. Huang, Q. H., K. N. Tran, J. M. Rodgers, D. H. Bartlett, R. J. Hemley, and T. Ichiye, A molecular perspective on the limits of life: Enzymes under pressure, Cond. Matt. Phys. 19, 22801 (2016).

615. Wilfong, B., M. Ahart, S. A. Gramsch, C. Stock, X. Li, H. Luo, and R. J. Hemley, High P-T Raman study of transitions in relaxor multiferroic Pb(Fe0.5Nb0.5)O3, J. Raman Spectrosc. 47, 227-232 (2016).

614. Satapathy, S., M. Ahart, D. Dandekar, R. J. Hemley, B. Schuster, and P. Khoma, Single-crystal elastic properties of aluminum oxynitride (AlON) from Brillouin scattering, J. Am. Ceram. Soc., DOI: 10.1111/jace.14065 (2016).

613. Lu, S., H. Liu, I. I. Naumov, S. Meng, Y. Li, J. S. Tse, B. Yang, and R. J. Hemley, Superconductivity in dense carbon-based materials, Phys. Rev. B 93, 104509 (2016).

612. Yamanaka, T., Y. Nakamoto, F. Takei, M. Ahart, H. K. Mao, and R. J. Hemley, Pressure-induced ferroelectric to paraelectric transition in LiTaO3 and (Li,Mg)TaO3, J. Appl. Phys. 119, 075902 (2016).

2015

611. Ahart, M., M. Somayazulu, S. Kojima, Y. Yasuda, S. Prosandeev, and R. J. Hemley, Structural transitions in Pb(In1/2Nb1/2)O3 under pressure, J. Adv. Dielect 5, 155033 (2015).

610. Yamanaka, T., A. Kyono, Y. Nakamoto, S. Kharlamova, V. V. Struzhkin, S. A. Gramsch, H. K. Mao, and R. J. Hemley, New structure of high-pressure body-centered orthorhombic Fe2SiO4, Am. Mineral. 100, 1736-1717 (2015).

609. Stagno, V., L. Bindi, C. Park, S. N. Tkachev, V. B. Prakapenka, H. K. Mao, R. J. Hemley, P. J. Steinhardt, and Y. Fei, Quasicrystals at extreme conditions: The role of pressure in stabilizing icosahedral Al63Cu24Fe13 at high temperature, Am. Mineral. 100, 2412-2418 (2015).

608. Hemawan, K. W., H. Gou, and R. J. Hemley, Diamond synthesis by microwave capillary plasma chemical vapor deposition at atmospheric pressure, Appl. Phys. Lett. 107, 181901 (2015).

607. Strzhemechny, M. A. and R. J. Hemley, Effects of rotational states on the c/a ratio in the solid hydrogens,, Phys. Rev. B 91, 144102 (2015).

606. Caracas, R. and R. J. Hemley, Ferroelectric dense ice, Phys. Rev. Lett. 142, 134502 (2015).

605. Naumov, I. I., R. J. Hemley, R. Hoffmann, and N. W. Ashcroft, Chemical bonding in hydrogen and lithium under pressure, J. Chem. Phys. 143, 064702 (2015).

604. Muramatsu, T., W. K. Wanene, M. Somayazulu, E. Vinitsky, D. Chandra, T. A. Strobel, V. V. Struzhkin, and R. J. Hemley, Metallization and superconductivity in the hydrogen-rich ionic salt BaReH9, J. Phys. Chem C 119, 18007-18013 (2015)

603. Hemawan, K. W. and R. J. Hemley, Optical emission diagnostics of microwave plasma CVD single crystal diamond synthesis, JVSTA A 33, 061302 (2015).

602. Naumov, I. I. and R. J. Hemley, Origin of transition between metallic and insulating states in simple metals, Phys. Rev. Lett. 114, 156403 (2015).

601. Hemley, R. J., V. V. Struzhkin, R. E. Cohen, and G. Shen, Measuring high- pressure electronic and magnetic properties, in Treatise on Geophysics, 2nd ed. (ed. G. Schubert), 2, 313-349 (Elsevier, Amsterdam, 2015).

600. Somayazulu, M., P. Dera, J. Smith, and R. J. Hemley, Structure and stability of solid Xe(H2)n, J. Chem. Phys. 142, 104503 (2015).

2014

599. Naumov, I. I. and R. J. Hemley, Aromacity, closed-shell effects, and metallization of hydrogen, Acc. Chem. Res. 47, 3551-3559 (2014).

598. Ahart, M., A. Karandikar, S. A. Gramsch, R. Boehler, and R. J. Hemley, Brillouin scattering measurements of H2O melting to 30 GPa, High Press. Res. 34, 327-336 (2014).

597. Ahart, M., S. Kojima, Y. Yasuda, and R. J. Hemley, Successive pressure-induced structural transitions in relaxor lead indum niobate, Ferroelectrics, submitted.

596. Liang, Q., C. S. Yan, J. Lai, Y. F. Meng, S. Krasnicki, H. SHu, H. K. Mao, and R. J. Hemley, Large area single crystal diamond synthesis by 915 MHz microwave plasma-assisted chemical vapor deposition, Cryst. Growth Design 14, 3234-3238 (2014).

595. Freiman, Y. A., S. M. Tretyak, A. Grechnev, A. F. Goncharov, and R. J. Hemley, Crystal field phenomena in hexagnal close-packed H2 and D2 at high pressures, Phys. Rev. B 90, 024501 (2104).

594. Zha, C. S., R. E. Cohen, H. K. Mao, and R. J. Hemley, Raman measurements of phase transitions in dense solid hydrogen and deuterium to 325 GPa, Proc. Nat. Acad. Sci. 111, 4792-4797 (2014).

593. Potter, R., M. Somayazulu, G. Cody, and R. J. Hemley, In-situ Raman spectroscopy and synchrotron x-ray diffraction studies on NNNN-tetramethylcyclotriborazane at high pressures, J. Phys. Chem. C, 118, 9871-9879 (2014).

592. Potter, R. G., M. Somayaulu, G. Cody, and R. J. Hemley, High pressure equilibria of dimethylamine borane, dihydridobis(dimethylamine)boron(III) tetrahydridoborate(III), and hydrogen, J. Phys. Chem. C 118, 7280-7287 (2014).

591. Doherty, M. W., V. V. Struzhkin, D. A. Simpson, L. P. McGuinness, Y. Meng, A. Stacey, T. J. Karle, R. J. Hemley, N. B. Manson, L. C. L. Hollenberg, and S. Prawer, Electronic properties and metrology of the diamond NV- center under pressure, Phys. Rev. Lett. 112, 047601 (2014).

2013

590. Cohen, R. E., I. Naumov, and R. J. Hemley, Optical evidence and mechanism of hydrogen metallization, Proc. Nat. Acad. Sci. 110, 13757-13762 (2013).

589. Guthrie, M., R. Boehler, C. A. Tulk, A. M. dos Santos, J. J. Molaison, K. Li, and R. J. Hemley, Neutron diffraction observations of interstitial protons in dense ice, Proc. Nat. Acad. Sci. 110, 10552-10556 (2013).

588. Freiman, Y. A., A. Grechnev, S. M. Tretyak, A. F. Goncharov, C. S. Zha, and R. J. Hemley, Sound velocities of hexagonal close-packed H2 and He under pressure, Phys. Rev. B 88, 214501 (2013).

587. Ahart, M., C. DeVreugd, D. D. Viehland, P. M. Gehring, and R. J. Hemley, X-ray diffraction study of the pressure-induced bcc-to-hcp hpase transition in highly magnetostrictive Fe0.81Ga0.19alloy, Phys. Rev. B 88, 184102 (2013).

586. Liang, Q., Y. F. Meng, C. S. Yan, S. Krasnicki, J. Lai, K. W. Hemawan, H. Shu, D. Popov, T. Yu, W. Yang, H. K. Mao, and R. J. Hemley, Developments in synthesis, characterizations, and applications of large, high-quality CVD single crystal diamond, J. Superhard Mater. 35, 195-213 (2013).

585. Naumov, I. I., R. E. Cohen, and R. J. Hemley, Graphene physics and insulator-metal transition in compressed hydrogen, Phys. Rev. B 88, 045125 (2013).

584. Rotundu, C. R., T. Cuk, R. L. Greene, Z. X. Shen, R. J. Hemley, and V. V. Struzhkin, High-pressure resistivity apparatus for quasi-hydrostatic compression experiments, Rev. Sci. Instrum. 84, 063903 (2013).

583. Zha, C. S., Z. Liu, M. Ahart, R. Boehler, and R. J. Hemley, Infrared spectroscopy of hydrogen phase IV, Phys. Rev. Lett. 101, 217402 (2013).

582. Loubeyre, L., M. Ahart, S. A. Gramsch, and R. J. Hemley, Density dependence of dynamical heterogeneity in fluid methanol, J. Chem. Phys. 138, 174507 (2013).

581. Lyubutin, I. S., V. V. Struzhkin, A. A. Mironovich, A. G. Gavriliuk, P. G. Naumov, J. F. Lin, S. G. Ovchinnikov, S. V. Sinogeikin, P. Chow, Y. Xiao, and R. J. Hemley, Quantum critical point and spin fluctuations in lower-mantle ferropericlase, Proc. Nat. Acad. Sci. 110, 7142-7147 (2013).

580. Oganov, A. R., R. J. Hemley, R. M. Hazen, and A. P. Jones, Chapter 3: High-pressure mineralogy of carbon, in Carbon in Earth: Reviews in Mineralogy and Geochemistry (eds. R. M. Hazen, Jones, A. P. and Baross, J. A.) 75, 47-77 (2013).

579. Rotundu, C. R., V. V. Struzhkin, M. S. Somayazulu, S. V. Sinogeikin, R. J. Hemley, and R. L. Greene, High-pressure effects on single crystals of electron-doped Pr2-xCexCuO4, Phys. Rev. B 87, 024506 (2013).

578. Freiman, Y. A., A. Grechnev, S. M. Tretyak, A. F. Goncharov, and R. J. Hemley, Sound velocities in solid hydrogen under pressure, Low Temp. Phys. 39, 548-551 (2013).

2012

577. Ahart, M., R. E. Cohen, R. J. Hemley, S. Sinogeikin, O. Shebanova, D. Ikuta, and Z. G. Ye, Pressure-dependence of the monoclinic phase in the Pb(Mg1/3Nb2/3)O3-PbTiO3 solid solutions, Phys. Rev. B 86, 224111 (2012).

576. Yamanaka, T., M. Ahart, Y. Nakamoto, Z. G. Ye, H. K. Mao, and R. J. Hemley, Anharmonic atomic vibration in the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 under pressure, Phys. Rev. B 86, 174108 (2012).

575. Hemley, R. J., Dense hydrogen, in High-Pressure Physics (ed. J. Loveday), 301-323 (CRC Press, Boca Raton, FL, 2012).

574. Singh, A. K., J. Hu, J. Shu, H. K. Mao, and R. J. Hemley, Strength of rhenium from x-ray diffraction experiments under nonhydrostatic compression to 250 GPa, J. Phys.: Conf. Series377, 012008 (2012).

573. Freiman, Y. A., A. Grechnev, S. M. Tretyak, A. F. Goncharov, and R. J. Hemley, Equation of state and Raman-active E2g lattice phonon in phases I, II, and III of solid hydrogen and deuterium, Phys. Rev. B 86, 014111 (2012).

572. Stevens, L. L., D. M. Dattlebaum, M. Ahart, and R. J. Hemley, High-pressure elastic properties of a flourinated copolymer: Poly(chlorotrifluoroethylene-co-vinylidene flouide) (Kel-F 800), J. Polymer Sci. Part B. 112, 023523 (2012).

571. Benjamin, A. S., M. Ahart, S. A. Gramsch, L. L. Stevens, E. B. Orler, D. M. Dattelbaum, and R. J. Hemley, Acoustic properties of Kel F-800 copolymer up to 85 GPa, J. Chem. Phys. 137, 014514 (2012).

570. Zha, C. S., Z. Liu, and R. J. Hemley, Synchrotron infrared measurements of dense hydrogen to 360 GPa, Phys. Rev. Lett. 108, 146402 (2012).

569. Irifune, T. and R. J. Hemley, New diamond windows into the Earth, Eos, 108, 146402 (2012).

568. Wang, S., Y. F. Meng, N. Ando, M. Tate, S. Krasnicki, C. S. Yan, Q. Liang, J. Lai, H. K. Mao, S. M. Gruner, and R. J. Hemley, Single-crystal CVD diamonds as small-angle x-ray scattering windows for high pressure research, J. Appl. Cryst. 45, 453-457 (2012).

567. Lazicki, A., P. Loubeyre, F. Occelli, R. J. Hemley, and M. Mezouar, Static compression of LiH to 250 GPa, Phys. Rev. B 85, 054103 (2012).

566. Kish, A., P. L. Griffin, K. L. Rogers, M. L. Fogel, R. J. Hemley, and A. Steele, High-pressure tolerance in Halobacterium salinarum NRC-1 and ohter non-piezophilic prokaryotes, Extremophiles 16, 355-361 (2012).

565. Hemawan, K. W., C. S. Yan, Q. Liang, J. Lai, Y. Meng, S. Krasnicki, H. K. Mao, and R. J. Hemley, Hot spot formation in microwave plasma CVD diamond synthesis, IEEE Trans. Plasma Sci. 39, 2790-2791 (2012).

564. Ding, Y., Z. Cai, J. Chang, R. J. Hemley, W. L. Mao, and H. K. Mao, Nanoscale diffraction imaging of the high-pressure ferroic transition in FeO, Appl. Phys. Chem. 100, 041903 (2012).

563. Yamanaka, T., K. Hirose, W. L. Mao, Y. Meng, P. Ganesh, L. Shulenburger, G. Shen, and R. J. Hemley, Crystal structures of (Mg, Fe)SiO3 post-perovskite, Proc. Nat. Acad. Sci. 109, 1035-1040 (2012).

562. Hazen, R. M., R. J. Hemley, and A. J. Mangum, Carbon in Earth's interior: Storage, cycling, and life, Eos 93, 17-18 (2012).

561. Kyono, A., S. A. Gramsch, T. Yamanaka, D. Ikuta, M. Ahart, B. O. Mysen, H. K. Mao, and R. J. Hemley, The influence of the Jahn-Teller effect at Fe2+ on the structure of chromite at high pressure, Phys. Chem. Minerals 39, 131-141 (2012).

560. Meng, Y., C. S. Yan, S. Krasnicki, Q. Liang, J. Lai, H. Shu, T. Yu, A. S. Steele, H. K. Mao and R. J. Hemley, High optical quality multicarat single crystal diamond produced by chemical vapor deposition, Phys. Stat. Sol. (a) 209, 101-104 (2012).

2011

559. Ahart, M., R. E. Cohen, R. J. Hemley, S. Sinogeikin, O. Shebanova, D. Ikuta, and Z. G. Ye, Pressure-composition phase diagram of the Pb(Mg1/3Nb2/3)O3-PbTiO3 solid solutions, Proceedings of The 20th IEEE International Symposium on Applications of Ferroelectrics, 36-39 (2011).

558. Strobel, T. A., P. Ganesh, M. Somayazulu, P. R. C. Kent, and R. J. Hemley, Novel cooperative interactions and structural ordering in H2S-H2, Phys. Rev. Lett. 107, 255503 (2011).

557. Dalton, D. A., M. Somayazulu, A. F. Goncharov, and R. J. Hemley, Static compression of tetramethylammonium borohydride (TMAB), J. Phys. Chem. A, 115, 11033-11038 (2011).

556. Freiman, Y. A., S. M. Tretyak, A. F. Goncharov, H. K. Mao, and R. J. Hemley, Molecular rotation in ρ-H2, ο-D2, and HD in phase I under pressure, J. Low Temp. Phys. 37, 1302-1306 (2011).

555. Litasov, K. D., A. F. Goncharov, and R. J. Hemley, Crossover from melting to dissociation of CO2 under pressure: Implications for the lower mantle, Earth Planet. Sci. Lett. 295, 115-126 (2011).

554. Chen, P. N., C. S. Zha, X. J. Chen, J. Shu, R. J. Hemley, and H. K. Mao, Raman study of phase transition in compressed methane using moissanite anvil cells, Phys. Rev. B 84, 104110 (2011).

553. Goncharov, A. F., R. J. Hemley, and H. K. Mao, Vibron frequencies of solid H2 and D2 to 200 GPa and implications for the P-T phase diagram, J. Chem. Phys. 134, 174501 (2011).

552. Kyono, A., M. Ahart, T. Yamanaka, S. A. Gramsch, H. K. Mao, and R. J. Hemley, High-pressure Raman spectroscopic studies of ulvöspinel Fe2 TiO4 , Am. Mineral. 96, 1193-1198 (2011).

551. Strobel, T. A., A. F. Goncharov, C. T. Seagle, Z. Liu, M. Somayazulu, V. V. Struzhkin, and R. J. Hemley, High pressure study of silane to 150 GPa, Phys. Rev. B 83, 114102 (2011).

550. Strobel, T. A., M. Somayazulu, and R. J. Hemley, Phase behavior of H2+H2O at high pressures and low temperature, J. Phys. Chem. 115, 4898-4903 (2011).

549. Lin, Z. J., J. Z. Zhang, B. S. Li, L. P. Wang, H. K. Mao, R. J. Hemley, and Y. Zhao, Superhard diamond/tungsten carbide nanocomposites, Appl. Phys. Lett. 98, 121914 (2011).

548. Griffin, P. L., A. Kish, A. Steele, and R. J. Hemley, Differential high- pressure survival in stationary phase Escherichia coli MG1655, High Press. Res. 31, 325-333 (2011).

547. Goncharov, A. F., N. Subramanian, T. R. Ravindran, M. Somayazulu, V. Prakapenka, and R. J. Hemley, Polymorphism of dense, hot oxygen, J. Chem. Phys. 135, 084512 (2011).

546. Subramanian, N., A. F. Goncharov, V. V. Struzhkin, M. Somayazulu, and R. J. Hemley, Bonding changes in hot fluid hydrogen at megabar pressures, Proc. Nat. Acad. Sci., 108, 6014-6019 (2011).

545. Ahart, M., M. Somayazulu, S. A. Gramsch, R. Boehler, H. K. Mao, and R. J. Hemley, Brilloun scattering of H2O-ice to megabar pressures, J. Chem. Phys. 134, 124517 (2011).

544. Shu, J., X. J. Chen, I. M. Chou, W. Yang, J. Hu, R. J. Hemley, and H. K. Mao, Structural stability of methane hydrate at high pressures, Geosci. Frontiers 21, 93-100 (2011).

543. Yoshimura, Y., S. T. Stewart, M. Somayazulu, H. K. Mao, and R. J. Hemley, Convergent Raman features in high density amorphous ice, ice VII, and ice VIII under pressure, J. Chem. Phys. B115, 3756-3760 (2011).