Phys. Rev. B 73, 106501 (2006) [3 pages]Comment on “Strong dependence of the interlayer coupling on the hole mobility in antiferromagnetic La2−xSrxCuO4 (x<0.02)”Received 13 April 2005; revised 8 November 2005; published 17 March 2006 Using the experimental data given in the above paper, we show that—unlike the effective coupling discussed in this paper—the net average antiferromagnetic interlayer coupling in doped lanthanum cuprates depends only weakly on the doping or on the temperature. We argue that the effective coupling is proportional to the square of the staggered magnetization, and does not supply new information about the origin of the suppression of the magnetic order in doped samples. Our analysis is based on a modified version of the equation describing the spin-flip transition, which takes into account the decrease of the staggered moment with temperature and doping. © 2006 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.73.106501
DOI:
10.1103/PhysRevB.73.106501
PACS:
74.25.Ha, 74.72.Dn, 75.30.Hx, 75.40.Cx
See AlsoOriginal Article: M. Hücker, H.-H. Klauss, and B. Büchner, Strong dependence of the interlayer coupling on the hole mobility in antiferromagnetic La2−xSrxCuO4 (x<0.02), Phys. Rev. B 70, 220507 (2004). |
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