Spin Singlet Formation from S = 1/2 Tetrahedral Clusters

Details Spin Singlet Formation from S = 1/2 Tetrahedral Clusters Spin Singlet Formation from S = 1/2 Tetrahedral Clusters

2009-06-28

arxiv.org/abs/0906.5116v1

Physics

Condensed Matter

Materials Science

11 pages, 5figures

Scientific paper

Muon spin relaxation ($\mu$SR) and nuclear magnetic resonance (NMR) experiments revealed that the spin singlet state with an excitation gap of $\sim$200 K is realized from $S = 1/2$ Nb$_4$ tetrahedral clusters in a cluster Mott insulator GaNb$_4$S$_8$. The intercluster cooperative phenomenon to the singlet state at $T_\mathrm{S} = 32$ K is triggered by intracluster Jahn-Teller type structural instability developed from $\sim$$3T_\mathrm{S}$. Referring to the lattice symmetry, the formation of Nb$_8$ octamer (Nb$_4$--Nb$_4$ bond) is suggested.

Affiliated with

Also associated with

No associations

Rating

Spin Singlet Formation from S = 1/2 Tetrahedral Clusters 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 Spin Singlet Formation from S = 1/2 Tetrahedral Clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin Singlet Formation from S = 1/2 Tetrahedral Clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-180466