Low-frequency spin dynamics in the orthorombic phase of La_2CuO_4

Details Low-frequency spin dynamics in the orthorombic phase of La_2CuO_4 Low-frequency spin dynamics in the orthorombic phase of La_2CuO_4

2000-04-05

arxiv.org/abs/cond-mat/0004071v1

Eur. Phys. J. B 17, 581 (2000)

Physics

Condensed Matter

Superconductivity

15 pages, 8 figures

Scientific paper

10.1007/s100510070095

An effective field theory is derived that describes the low-frequency spin dynamics in the low-temperature orthorombic phase of La_2CuO_4. Restricted to a single CuO_2 layer the effective theory is a simple generalization of the relativistic nonlinear sigma model to include all spin interactions allowed by symmetry. Incorporating a weak interlayer interaction leads to two coupled nonlinear sigma models which provide an efficient description of the complete bilayer dynamics. Particular attention is paid to the weak-ferromagnetic and spin-flop transitions induced by external magnetic fields. The main features of the observed (covert) weak ferromagnetism are thus accounted for in a straightforward manner but some of the finer theoretical predictions would require further experimental investigation. The derived framework is also suitable for the study of the structure and dynamics of magnetic domains in undoped La_2CuO_4.

Affiliated with

Also associated with

No associations

Rating

Low-frequency spin dynamics in the orthorombic phase of La_2CuO_4 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 Low-frequency spin dynamics in the orthorombic phase of La_2CuO_4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low-frequency spin dynamics in the orthorombic phase of La_2CuO_4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-629705