Volume 105, Number 4, February 2014
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||04 March 2014|
Electronic band structure and Fermi surfaces of the quasi–two-dimensional monophosphate tungsten bronze, P4W12O44
1 Department of Physical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur Campus Nadia 741252, India
2 Department of Physics, Tohoku University - Sendai 980-8578, Japan
3 Solid State and Structural Chemistry Unit, Indian Institute of Science - Bangalore 560 012, India
4 WPI Research Center, Advanced Institute for Materials Research, Tohoku University - Sendai 980-8577, Japan
5 Department of Chemistry and Chemical Biology, The State University of New Jersey - 610 Taylor Road, Piscataway, NJ LLL08854, USA
Received: 10 January 2014
Accepted: 6 February 2014
The electronic structure of quasi-two-dimensional monophosphate tungsten bronze, P4W12O44, has been investigated by high-resolution angle-resolved photoemission spectroscopy and density functional theoretical calculations. Experimental electron-like bands around point and Fermi surfaces have similar shapes as predicted by calculations. Fermi surface mapping at different temperatures shows a depletion of density of states at low temperature in certain flat portions of the Fermi surfaces. These flat portions of the Fermi surfaces satisfy the partial nesting condition with incommensurate nesting vectors and , which leads to the formation of charge density waves in this phosphate tungsten bronzes. The setting up of charge density wave in these bronzes can well explain the anomaly observed in its transport properties.
PACS: 79.60.-i – Photoemission and photoelectron spectra / 71.18.+y – Fermi surface: calculations and measurements; effective mass, g factor / 71.30.+h – Metal-insulator transitions and other electronic transitions
© EPLA, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.