JPS Conf. Proc. 3, 016022 (2014) [7 pages]
Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2013)
Orbital Dynamics Coupled with Jahn–Teller Phonons in Strongly Correlated Electron Systems
- Full text:
- PDF (eReader) / PDF (Download) (2507 kB)
Department of Physics, Tohoku University, Sendai 980-8578, Japan
Received September 30, 2013
Orbital-lattice coupled excitations are examined in eg orbital degenerate systems such as LaMnO3 and KCuF3. Both the local vibronic excitations and the superexchange-type inter-site interactions are dealt with on an equal footing. We adopt the generalized spin-wave approximation where local vibronic states are fully taken into account. Orbital exitation spectra are examined as functions of the Jahn–Teller coupling and anharmonic potential of the lattice vibrations.
©2014 The Physical Society of Japan
References
- 1) S.Maekawa, T.Tohyama, S. E.Barnes, S.Ishihara, W.Koshibae, and G.Khaliullin, Physics of Transition Metal Oxides (Springer, Berlin, 2004). Google Scholar
- 2) E.Saitoh, S.Okamoto, K. T.Takahashi, K.Tobe, K.Yamamoto, T.Kimura, S.Ishihara, S.Maekawa, and Y.Tokura, Nature 410, 180 (2001). 10.1038/35065547 Google Scholar
- 3) T.Inami, T.Fukuda, J.Mizuki, S.Ishihara, H.Kondo, H.Nakao, T.Matsumura, K.Hirota, Y.Murakami, S.Maekawa, and Y.Endoh, Phys. Rev. B 67, 045108 (2003). 10.1103/PhysRevB.67.045108 Google Scholar
- 4) K.Ishii, S.Ishihara, Y.Murakami, K.Ikeuchi, K.Kuzushita, T.Inami, K.Ohwada, M.Yoshida, I.Jarrige, N.Tatami, S.Niioka, D.Bizen, Y.Ando, J.Mizuki, S.Maekawa, and Y.Endoh, Phys. Rev. B 83, 241101 (2011). 10.1103/PhysRevB.83.241101 Google Scholar
- 5) S.Ishihara, J.Inoue, and S.Maekawa, Physica C 263, 130 (1996). 10.1016/0921-4534(96)00085-8 Google Scholar
- 6) S.Ishihara, J.Inoue, and S.Maekawa, Phys. Rev. B 55, 8280 (1997). 10.1103/PhysRevB.55.8280 Google Scholar
- 7) J.van den Brink, Phys. Rev. Lett. 87, 217202 (2001). 10.1103/PhysRevLett.87.217202 Google Scholar
- 8) P. B.Allen and V.Perebeinos, Phys. Rev. Lett. 83, 4828 (1999). 10.1103/PhysRevLett.83.4828 Google Scholar
- 9) J.Nasu and S.Ishihara, arXiv:1308.3997.Google Scholar
- 10) S.Ishihara and S.Maekawa, Phys. Rev. B 62, 2338 (2000). 10.1103/PhysRevB.62.2338 Google Scholar
- 11) L. F.Feiner, A. M.Olés, and J.Zaanen, J. Phys. Cond. Mat. 10, L555 (1998). 10.1088/0953-8984/10/32/001 Google Scholar
- 12) N.Papanicolaou, Nucl. Phys. B 305, 367 (1988). 10.1016/0550-3213(88)90073-9 Google Scholar
- 13) F. P.Onufrieva, Sov. Phys. JETP 89, 2270 (1985).Google Scholar
- 14) R.Shiina, H.Shiba, P.Thalmeier, A.Takahashi, and O.Sakai, J. Phys. Soc. Jpn. 72, 1216 (2003). 10.1143/JPSJ.72.1216[Abstract] Google Scholar
- 15) H.Kusunose and Y.Kuramoto, J. Phys. Soc. Jpn. 70, 3076 (2001). 10.1143/JPSJ.70.3076[Abstract] Google Scholar
- 16) Z.Popovic and S.Satpathy, Phys. Rev. Lett. 84, 1603 (2000). 10.1103/PhysRevLett.84.1603 Google Scholar
- 17) S.Okamoto, S.Ishihara, and S.Maekawa, Phys. Rev. B 65, 144403 (2002). 10.1103/PhysRevB.65.144403 Google Scholar
- 18) M. C. M.O’Brien, Proc. R. Soc. London, Ser. A 281, 323 (1964). 10.1098/rspa.1964.0185 Google Scholar