Spectroscopic evidence for a charge-density-wave condensate in a charge-ordered manganite: Observation of a collective excitation mode inPr0.7Ca0.3MnO3by using THz time-domain spectroscopy

2001/06/30 by N. Kida, Noriaki Kida, Masayoshi Tonouchi · 2 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.66.024401

published as Phys. Rev. B 66, 024401-1-8 (2002) · REVTeX4, 8 pages including 7 figures and 2 tables

openalex publication_date 2002/06/24 · arxiv created 2002/06/28 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

THz time-domain spectroscopy was used to directly probe the low-energy (0.5--5 meV) electrodynamics of the charge-ordered manganite Pr_0.7Ca_0.3MnO₃. We revealed the existence of a finite peak structure around 2--3 meV well below the charge gap \ensuremath∼300 meV. In analogy to the low-energy optical properties of the well-studied low-dimensional materials, we attributed this observed structure to the collective excitation mode arising from the charge-density-wave condensate. This finding provides the importance role of the quasi-one-dimensional nature of the charge and orbital ordering in Pr_0.7Ca_0.3MnO₃.

Citations

• Low-energy charge dynamics inLa0.7Ca0.3MnO3:THz time-domain spectroscopic studies
• Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films
• Microwave and millimeter wave spectroscopy in the slightly hole-doped ladders of Sr 14 Cu 24 O 41

Cited by

• Anomalous multi-order Raman scattering in LaMnO3: a signature of quantum lattice effects in a Jahn–Teller crystal
• Investigation of the electronic structure of the charge-ordered phase in epitaxial and polycrystallineLa1−xCaxMnO3(x=0.55,0.67)perovskite manganites