Tunnelling matrix elements with antiferromagnetic Gutzwiller wave functions

Details Tunnelling matrix elements with antiferromagnetic Gutzwiller wave functions Tunnelling matrix elements with antiferromagnetic Gutzwiller wave functions

2010-10-25

arxiv.org/abs/1010.5055v1

Phys. Rev. B 83, 165116 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

16 pages, 10 figures

Scientific paper

We use a generalized Gutzwiller Approximation (GA) elaborated to evaluate matrix elements with partially projected wave functions and formerly applied to homogeneous systems. In the present paper we consider projected single-particle (hole) excitations for electronic systems with antiferromagnetic (AFM) order and obtain the corresponding tunnelling probabilities. The accuracy and the reliability of our analytical approximation is tested using the Variational Monte Carlo (VMC). Possible comparisons with experimental results are also discussed.

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