Frustration driven structural distortion in VOMoO4

Details Frustration driven structural distortion in VOMoO4 Frustration driven structural distortion in VOMoO4

2002-05-06

arxiv.org/abs/cond-mat/0205092v2

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevB.66.094420

Nuclear magnetic resonance (NMR), electron paramagnetic resonance (EPR), magnetization measurements and electronic structure calculations in VOMoO4 are presented. It is found that VOMoO4 is a frustrated two-dimensional antiferromagnet on a square lattice with competing exchange interactions along the side J1 and the diagonal J2 of the square. From magnetization measurements J1+J2 is estimated around 155 K, in satisfactory agreement with the values derived from electronic structure calculations. Around 100 K a structural distortion, possibly driven by the frustration, is evidenced. This distortion induces significant modifications in the NMR and EPR spectra which can be accounted for by valence fluctuations. The analysis of the spectra suggests that the size of the domains where the lattice is distorted progressively grows as the temperature approaches the transition to the magnetic ground state at Tc=42 K.

Affiliated with

Also associated with

No associations

Rating

Frustration driven structural distortion in VOMoO4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Frustration driven structural distortion in VOMoO4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frustration driven structural distortion in VOMoO4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-497067