2005
DOI: 10.1088/1367-2630/7/1/119
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Theory and experiment of orbital excitations in correlated oxides

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Cited by 15 publications
(15 citation statements)
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“…8,9 In LaMnO 3 , the bosonic orbitons are treated similarly to magnons in a long-range spin-ordered state, whereas the orbital excitations of RVO 3 are discussed in terms of onedimensional ͑1D͒ fermions equivalent to the spinons of a 1D Heisenberg chain. [6][7][8] The role attributed to phonons varies largely. For the case of LaMnO 3 , it has been argued that the orbiton-phonon coupling constant g is small, only giving rise to a small shift of the orbiton band.…”
Section: Introductionmentioning
confidence: 99%
“…8,9 In LaMnO 3 , the bosonic orbitons are treated similarly to magnons in a long-range spin-ordered state, whereas the orbital excitations of RVO 3 are discussed in terms of onedimensional ͑1D͒ fermions equivalent to the spinons of a 1D Heisenberg chain. [6][7][8] The role attributed to phonons varies largely. For the case of LaMnO 3 , it has been argued that the orbiton-phonon coupling constant g is small, only giving rise to a small shift of the orbiton band.…”
Section: Introductionmentioning
confidence: 99%
“…In order to demonstrate this, we present the full logarithmic plot of C 4 f versus temperature for both PrV 2 Al 20 and PrTi 2 Al 20 in Figure 3 [16,20] as shown by open circles. This power law behavior indicates the existence of a gapless mode corresponding to the so-called orbiton proposed for various transition metal based systems [21]. The gapless mode in the multipolar ordered state in PrV 2 Al 20 would be the signature of strong orbital fluctuations arising from the proximity to a orbital QCP.…”
Section: Resultsmentioning
confidence: 81%
“…The common experimental realization the entanglement effects is related to the spin-orbital excitations, referred to as orbitons [46][47][48][49][50][51]. This issue has drawn recently and an additional interest in connection to the so called Higgs and Goldstone modes in condensed matter physics [52][53][54].…”
Section: Discussionmentioning
confidence: 99%