Work

Continuous transition between antiferromagnetic insulator and paramagnetic metal in the pyrochlore iridate Eu 2 Ir 2 O 7

Year: 2012

Type: article

Abstract: Our single crystal study of the magnetothermal and transport properties of the pyrochlore iridate Eu${}_{2}$Ir${}_{2}$O${}_{7}$ reveals a continuous phase transition from a paramagnetic metal to an antiferromagnetic insulator for a sample with stoichiometry within $\ensuremath{\sim}$1$%$ resolution. The insulating phase has strong proximity to an antiferromagnetic semimetal, which is stabilized by several $%$ level of the off-stoichiometry. Our observations suggest that in addition to electronic correlation and spin-orbit coupling the magnetic order is essential for opening the charge gap.

Source: Physical Review B

DOI: 10.1103/physrevb.85.245109

Authors: Jun J. Ishikawa, Eoin C. T. O'Farrell, Satoru Nakatsuji

Institution: The Institute for Solid State Physics, The University of Tokyo

Language: Latvian

Topic: Advanced Condensed Matter Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science

Awards: G6668846074, Novel Phase Formation and Phase Transition due to Magnetic Competing Phenomena