Lee, JS;
Lee, YS;
Noh, TW;
Nakatsuji, S;
Fukazawa, H;
Perry, RS;
Maeno, Y;
... Eom, CB; + view all
(2004)
Bond-length dependence of charge-transfer excitations and stretch phonon modes in perovskite ruthenates: Evidence of strong
p
–
d
hybridization effects.
Physical Review B
, 70
(8)
, Article 085103. 10.1103/PhysRevB.70.085103.
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Abstract
We reported the optical conductivity spectra of the Ruddlesden-Popper series ruthenates, i.e., Srn+1RunO3n+1 and Can+1RunO3n+1, where n=1, 2, and `. Among various optical transitions, we investigated two Ru-O related modes, i.e., the charge-transfer excitation and the transverse stretching phonon. We found that their frequency shifts are not much affected by a structural dimensionality, but are closely related to the Ru-O bond length. Through the quantitative analysis of the charge-transfer excitation energy, we could demonstrate that the p–d hybridization should play an important role in determining their electronic structure. In addition, we discussed how the electronic excitation could contribute the lattice dynamics in the metallic ruthenates
| Type: | Article |
|---|---|
| Title: | Bond-length dependence of charge-transfer excitations and stretch phonon modes in perovskite ruthenates: Evidence of strong p – d hybridization effects |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.70.085103 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.70.085103 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10134088 |
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