Pressure-induced spin transition and evolution of the electronic excitations of FeBO3: Resonant inelastic x-ray scattering results

Описание

Тип публикации: статья из журнала

Год издания: 2014

Идентификатор DOI: 10.1209/0295-5075/108/37001

Аннотация: A high-pressure resonant inelastic x-ray scattering (RIXS) of FeBO3 at the Fe K pre-edge has been carried out to study the evolution of electronic excitations through the pressure-induced spin transition. Systematic peak shifts with insignificant peak width change are observed with increasing pressure in the high-spin state. An eleПоказать полностьюctronic transition occurs in tandem with the high-spin to low-spin transition, observed as the emergence of multiple new low-energy peaks in the spectra. The energy gap is reduced due to these low-energy peaks, not a peak width broadening. The observed electronic excitations are associated with dd excitations, which are calculated using a full-multiplet theory. We consider changes in crystal-field splitting and covalency to explain the observed peak shifts in the high-spin state. The new peaks that emerge upon the high- to low-spin transition are compared with dd excitations for the low-spin configuration. Copyright (C) EPLA, 2014

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Издание

Журнал: EPL

Выпуск журнала: Vol. 108, Is. 3

ISSN журнала: 02955075

Место издания: MULHOUSE

Издатель: EPL ASSOCIATION, EUROPEAN PHYSICAL SOCIETY

Авторы

  • Kim Jungho (Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA)
  • Struzhkin Viktor V. (Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA)
  • Ovchinnikov Sergey G. (Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Orlov Yu. (Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia)
  • Shvyd'ko Yu. (Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA)
  • Upton M.H. (Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA)
  • Casa D. (Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA)
  • Gavriliuk Alexander G. (Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA; Russian Acad Sci Troitsk, Inst Nucl Res, Moscow 142190, Russia; Russian Acad Sci, Inst Crystallog, Moscow 119333, Russia)
  • Sinogeikin S.V. (Carnegie Inst Sci, HPCAT, Argonne, IL 60439 USA)

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