Theory of Nuclear Magnetic Relaxation in Haldane Gap Materials: An Illustration of the Use of (1+1)-Dimensional Field Theory Techniques

Details Theory of Nuclear Magnetic Relaxation in Haldane Gap Materials: An Illustration of the Use of (1+1)-Dimensional Field Theory Techniques Theory of Nuclear Magnetic Relaxation in Haldane Gap Materials: An Illustration of the Use of (1+1)-Dimensional Field Theory Techniques

1995-12-22

arxiv.org/abs/cond-mat/9512161v2

Physics

Condensed Matter

A University of British Columbia PhD Thesis. Figures and Style files are included together. Note: to Tex, type `Latex phd.tex`

Scientific paper

A comprehensive theory of nuclear magnetic relaxation is developed for Haldane Gap materials using nonlinear sigma, boson and fermion models. We include a thorough discussion of of the effects of interchain couplings, nearest neighbour hyperfine couplings and crystal structure. We also introduce a new theory of impurities corresponding to broken chain ends weakly coupled to bulk magnons. The work is compared to recent experiments on NENP.

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