2006/04/30 by Kalobaran Maiti, Ravi Shankar Singh, V. R. R. Medicherla
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Electronic and Structural Properties of Oxides #Magnetic and transport properties of perovskites and related materials #cond-mat.str-el
paper · pdf · doi:10.1209/0295-5075/78/17002
published as Europhys. Lett. 78 (2007) 17002 · 4 pages including 3 figures
openalex publication_date 2007/03/13 · arxiv created 2007/04/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We investigate the temperature evolution of the electronic states in the vicinity of the Fermi level of a non-Fermi-liquid (NFL) system, CaRuO 3 using ultra high-resolution photoemission spectroscopy; isostructural SrRuO 3 exhibiting Fermi-liquid behavior despite similar electron interaction parameters as that of CaRuO 3 , is used as a reference. High-energy resolution in this study helps to reveal particle-hole asymmetry in the excitation spectra of CaRuO 3 in contrast to that in SrRuO 3 . In addition, we observe signature of phonon excitations in the photoemission spectra of CaRuO 3 at finite temperatures while these are weak in SrRuO 3 .