Výsledky vyhledávání - "Mckelvy, M. J."

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Influence of static Jahn-Teller distortion on the magnetic excitation spectrum of PrO2: A synchrotron x-ray and neutron inelastic scattering study

Autor: Webster, C. H., Helme, L. M., Boothroyd, A. T., McMorrow, D. F., Wilkins, S. B., Detlefs, C., Detlefs, B., Bewley, R. I., McKelvy, M. J.

Publikováno v: Physical Review B 76, 134419 (2007)

A synchrotron x-ray diffraction study of the crystallographic structure of PrO2 in the Jahn-Teller distorted phase is reported. The distortion of the oxygen sublattice, which was previously ambiguous, is shown to be a chiral structure in which neighb

Externí odkaz: http://arxiv.org/abs/0710.5507

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Field-Induced Magnetic and Structural Domain Alignment in PrO2

Autor: Gardiner, C. H., Boothroyd, A. T., McKelvy, M. J., McIntyre, G. J., Prokes, K.

Publikováno v: Physical Review B, 70, 024416 (2004)

We present a neutron diffraction study of the magnetic structure of single crystal PrO2 under applied fields of 0-6 T. As the field is increased, changes are observed in the magnetic Bragg intensities. These changes are found to be irreversible when

Externí odkaz: http://arxiv.org/abs/cond-mat/0403726

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Cooperative Jahn-Teller Distortion in PrO2

Autor: Gardiner, C. H., Boothroyd, A. T., Pattison, P., McKelvy, M. J., McIntyre, G. J., Lister, S. J. S.

Publikováno v: Physical Review B, 70, 024415 (2004)

We report neutron diffraction data on single crystal PrO2 which reveal a cooperative Jahn-Teller distortion at TD = 120 +/- 2 K. Below this temperature an internal distortion of the oxygen sublattice causes the unit cell of the crystallographic struc

Externí odkaz: http://arxiv.org/abs/cond-mat/0311294

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