ARPES investigation of two leg ladder compounds Sr14-xCaxCu24O41
Abstract
The so-called ``two leg ladder compounds'' Sr14-xCaxCu24O41 are interesting since it is well accepted that they form a resonating valence bond state. The crystal structure of two leg ladder compounds consists of one-dimensional motifs (ladders and chains), and it is within the ladders that the resonating valence bond state arises. As x is varied, these compounds go through a metal-insulator transition, and become a superconductor, albeit under pressure. So far, a high resolution ARPES study shedding light on the near-Fermi-level electronic structure of these interesting compounds has been missing. Here, we report our ARPES results, providing the first view of the near-Fermi-level quasi-one-dimensional electronic structure arising from the ladders. We discuss line shape features that are indicative of strong electron correlations.
- Publication:
-
APS March Meeting Abstracts
- Pub Date:
- March 2009
- Bibcode:
- 2009APS..MARA33010G