- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review Letters

Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Extended Infrared Studies of High Pressure Hydrogen

Nancy H. Chen, Eran Sterer, and Isaac F. Silvera

  • Lyman Laboratory of Physics, Harvard University, Cambridge, Massachusetts 02138

PDF

Phys. Rev. Lett. 76, 1663 – Published 4 March, 1996

DOI: https://doi.org/10.1103/PhysRevLett.76.1663

Abstract

We have studied solid molecular hydrogen down to liquid helium temperatures and to a pressure of 191 GPa in a new spectroscopic system, extending the low frequency limit by more than a factor of 3, from 3000 to 1000 cm−1. No evidence for the earlier reported Drude behavior is found within our range of study; a possible explanation of this earlier report is presented. We find a new lattice mode which may be important for determining the structure of the high pressure A phase. Observation of an IR active vibron in the A phase of parahydrogen sets restrictions on the phase diagram.

View figure in article

References (27)

  1. J. H. Eggert, K. A. Goettel, and I. F. Silvera, Europhys. Lett. 11, 775 (1990).
  2. J. H. Eggert, K. A. Goettel, and I. F. Silvera, Europhys. Lett. 12, 381 (1990).
  3. H. K. Mao and R. J. Hemley, Science 244, 1462 (1989).
  4. H. K. Mao, R. J. Hemley, and M. Hanfland, Phys. Rev. Lett. 65, 484 (1990).
  5. M. Hanfland, R. J. Hemley, and H. K. Mao, Phys. Rev. B 43, 8767 (1991).
  6. J. H. Eggert, F. Moshary, W. J. Evans, H. E. Lorenzana, K. A. Goettel, and I. F. Silvera, Phys. Rev. Lett. 66, 193 (1991).
  7. L. Cui, N. H. Chen, and I. F. Silvera, Phys. Rev. Lett. 74, 4011 (1995).
  8. H. E. Lorenzana, I. F. Silvera, and K. A. Goettel, Phys. Rev. Lett. 63, 2080 (1989).
  9. M. Hanfland, R. J. Hemley, and H. K. Mao, Phys. Rev. Lett. 70, 3760 (1993).
  10. L. Cui, N. H. Chen, S. J. Jeon, and I. F. Silvera, Phys. Rev. Lett. 72, 3048 (1994).
  11. L. Cui, N. H. Chen, and I. F. Silvera, Phys. Rev. B 51, 14 987 (1995).
  12. R. J. Hemley, Z. G. Soos, M. Hanfland, and H. K. Mao, Nature (London) 369, 384 (1994).
  13. R. J. Hemley and H. K. Mao, Science 249, 391 (1990).
  14. H. E. Lorenzana, I. F. Silvera, and K. A. Goettel, Phys. Rev. Lett. 65, 1901 (1990).
  15. I. F. Silvera, NATO ARW on Frontiers of High Pressure Research (Plenum Press, New York,1991).
  16. M. Hanfland, R. J. Hemley, H. K. Mao, and G. P. Williams, Phys. Rev. Lett. 69, 1129 (1992).
  17. Recently at the LAM-9 Conference, Aug. 28–Sept. 1, 1995, R. Hemley presented synchrotron IR data which does not support the interpretation of Drude behavior.
  18. J. B. Burkholder, P. D. Hammer, and C. J. Howard, J. Phys. Chem. 91, 2136 (1987).
  19. P. Erdös, J. Opt. Soc. Am. 49, 877 (1959).
  20. We thank R. Boehler for a useful suggestion on how to make these objectives.
  21. H. K. Mao, J. Xu, and P. M. Bell, J. Geophys. Res. 91, 4673 (1986).
  22. N. W. Ashcroft, Phys. Rev. B 41, 10 963 (1990).
  23. R. J. Hemley, H. K. Mao, and J. F. Shu, Phys. Rev. Lett. 65, 2670 (1990).
  24. J. S. Tse and D. D. Klug, Nature (London) (to be published).
  25. A. L. Ruoff and C. A. Vanderborgh, Phys. Rev. Lett. 66, 754 (1991).
  26. A. L. Ruoff, High Pressure Science and Technology—1993, S. C. Schmidt (AIP, Colorado Springs, CO,1994), p. 849.
  27. B. Baranowski, Polish J. Chem. 66, 1737 (1992).

Outline

Information

Phys. Rev. Lett. 76, 1663– Published 4 March, 1996
  • Received 5 October 1995

© 1996 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation