Journal Article

IMPULSE-2016-00193

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Jahn-Teller versus quantum effects in the spin-orbital material LuVO$_3$

Skoulatos, M. (Corresponding author)MLZ* ; Toth, S. ; Roessli, B. ; Enderle, M. ; Habicht, K. ; Sheptyakov, D. ; Cervellino, A. ; Freeman, P. G. ; Reehuis, M. ; Stunault, A. ; McIntyre, G. J. ; Tung, L. D. ; Marjerrison, C. ; Pomjakushina, E. ; Brown, P. J. ; Khomskii, D. I. ; Rüegg, C. ; Kreyssig, A. ; Goldman, A. I. ; Goff, J. P.

2015
Inst. Woodbury, NY

Please use a persistent id in citations: doi:10.1103/PhysRevB.91.161104

Abstract: We report on combined neutron and resonant x-ray scattering results, identifying the nature of the spin-orbital ground state and magnetic excitations in LuVO3 as driven by the orbital parameter. In particular, we distinguish between models based on orbital-Peierls dimerization, taken as a signature of quantum effects in orbitals, and Jahn-Teller distortions, in favor of the latter. In order to solve this long-standing puzzle, polarized neutron beams were employed as a prerequisite in order to solve details of the magnetic structure, which allowed quantitative intensity analysis of extended magnetic-excitation data sets. The results of this detailed study enabled us to draw definite conclusions about the classical versus quantum behavior of orbitals in this system and to discard the previous claims about quantum effects dominating the orbital physics of LuVO3 and similar systems.

Keyword(s): Basic research (1st) ; Condensed Matter Physics (2nd) ; Materials Science (2nd)

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Contributing Institute(s):

1. E21
2. PANDA

Experiment(s):

1. Measurement at external facility

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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