We calculate the optical conductivity in a clean system of quasiparticles coupled to charge-ordering collective modes. The absorption induced by these modes may produce an anomalous frequency and temperature dependence of low-energy optical absorption in some cuprates. However, the coupling with lattice degrees of freedom introduces a non-universal energy scale leading to scaling violation in low-temperature optical conductivity. (c) 2007 Elsevier B.V. All rights reserved.
Spectroscopic evidences of quantum critical charge fluctuations in cuprates / Grilli, Marco; Caprara, Sergio; DI CASTRO, Carlo; D., Suppa. - In: PHYSICA. C, SUPERCONDUCTIVITY. - ISSN 0921-4534. - 460:SPEC. ISS.(2007), pp. 1103-1104. ( 8th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors Dresden, GERMANY JUL 09-14, 2006) [10.1016/j.physc.2007.03.371].
Spectroscopic evidences of quantum critical charge fluctuations in cuprates
GRILLI, Marco;CAPRARA, SERGIO;DI CASTRO, Carlo;
2007
Abstract
We calculate the optical conductivity in a clean system of quasiparticles coupled to charge-ordering collective modes. The absorption induced by these modes may produce an anomalous frequency and temperature dependence of low-energy optical absorption in some cuprates. However, the coupling with lattice degrees of freedom introduces a non-universal energy scale leading to scaling violation in low-temperature optical conductivity. (c) 2007 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
