The J_1-J_2 model revisited : Phenomenology of CuGeO_3

Details The J_1-J_2 model revisited : Phenomenology of CuGeO_3 The J_1-J_2 model revisited : Phenomenology of CuGeO_3

1996-11-04

arxiv.org/abs/cond-mat/9611018v1

Phys. Rev. B, Vol. 55, p5944 (1997)

Physics

Condensed Matter

Strongly Correlated Electrons

Phys. Rev. B

Scientific paper

10.1103/PhysRevB.55.5944

We present a mean field solution of the antiferromagnetic Heisenberg chain with nearest (J_1) and next to nearest neighbor (J_2) interactions. This solution provides a way to estimate the effects of frustration. We calculate the temperature-dependent spin-wave velocity, v_s(T) and discuss the possibility to determine the magnitude of frustration J_2/J_1 present in quasi 1D compounds from measurements of v_s(T). We compute the thermodynamic susceptibility at finite temperatures and compare it with the observed susceptibility of the spin-Peierls compound CuGeO_3. We also use the method to study the two-magnon Raman continuum observed in CuGeO_3 above the spin-Peierls transition.

Affiliated with

Also associated with

No associations

Rating

The J_1-J_2 model revisited : Phenomenology of CuGeO_3 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 The J_1-J_2 model revisited : Phenomenology of CuGeO_3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The J_1-J_2 model revisited : Phenomenology of CuGeO_3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-391047