Work

Long Range Charge Ordering in Magnetite Below the Verwey Transition

Year: 2001

Type: article

Abstract: The crystal structure of Fe(3)O(4) below the 122 K Verwey transition has been refined using high-resolution x-ray and neutron powder diffraction data. The refinements give direct evidence for charge ordering (CO) over four independent octahedral Fe sites, two with a charge of +2.4 and the other two of +2.6. CO schemes consistent with our model do not meet the widely accepted Anderson condition of minimum electrostatic repulsion. Instead we propose that CO is driven primarily by a [001] electronic instability, which opens a gap at the transition through a charge density wave mechanism.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.87.266401

Authors: J. P. Wright, J. P. Attfield, P. G. Radaelli

Institutions: University of Cambridge, Rutherford Appleton Laboratory, ISIS Neutron and Muon Source

Language: English

Topic: Magnetic and transport properties of perovskites and related materials

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Purdue University, European Synchrotron Radiation Facility, Engineering and Physical Sciences Research Council

OpenAlex ID: W1963767394

FWCI: 9.717

Cites: 26

Cited by: 337

Related to: 10