Neel order in doped quasi one-dimensional antiferromagnets

Details Neel order in doped quasi one-dimensional antiferromagnets Neel order in doped quasi one-dimensional antiferromagnets

2002-03-29

arxiv.org/abs/cond-mat/0204001v1

Phys. Rev. Lett. 89, 47202 (2002).

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages in revtex4 format including 2 epsf-embedded figures. The latest version in PDF format is available from http://fy.ch

Scientific paper

10.1103/PhysRevLett.89.047202

We study the Neel temperature of quasi one-dimensional S=1/2 antiferromagnets containing non-magnetic impurities. We first consider the temperature dependence of the staggered susceptibility of finite chains with open boundary conditions, which shows an interesting difference for even and odd length chains. We then use a mean field theory treatment to incorporate the three dimensional inter-chain couplings. The resulting Neel temperature shows a pronounced drop as a function of doping by up to a factor of 5.

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