1990
DOI: 10.1103/physrevb.42.6509
|View full text |Cite
|
Sign up to set email alerts
|

Effective spin Hamiltonian for the CuO planes inLa2CuO4and meta

Abstract: We show that the effective spin Hamiltonian used previously to describe the CuO planes of La2Cu04 does not lead to a net ferromagnetic moment for CuO planes and hence does not describe the metamagnetic behavior seen experimentally. %'e construct for the first time a Hamiltonian from the symmetries of the crystal structure which does lead to metamagnetism. The linear spin-wave spectrum is also calculated. This work points to the necessity of constructing effective spin Hamiltonians for metamagnetic systems whic… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1

Citation Types

2
67
0

Year Published

1997
1997
2006
2006

Publication Types

Select...
5
4

Relationship

0
9

Authors

Journals

citations
Cited by 88 publications
(69 citation statements)
references
References 16 publications
2
67
0
Order By: Relevance
“…The gap in the other mode is ∆ ππ ≃ 4SD for small D. These results are very similar to the ones obtained in Ref. 15 in the context of La 2 CuO 4 .…”
Section: B Spectrum and Gapssupporting
confidence: 80%
See 1 more Smart Citation
“…The gap in the other mode is ∆ ππ ≃ 4SD for small D. These results are very similar to the ones obtained in Ref. 15 in the context of La 2 CuO 4 .…”
Section: B Spectrum and Gapssupporting
confidence: 80%
“…There is also a disagreement between the recent theoretical works 11,12 in the low-field regime with the earlier low-field studies of the Heisenberg+DM problem. 13,14,15 The latter works predict a non-zero gap and also weak ferromagnetism 16 in zero field, while the former do not. We will show below that this discrepancy comes from the higher-order contributions, which yet result in the effects of order O(D) in the excitation gap and spin canting angle.…”
Section: Introductionmentioning
confidence: 99%
“…The derived phenomenological picture was further probed by symmetry analysis [7,8] and by a fresh and challenging look at the DM anisotropy due to Kaplan [9] and Shekhtman, Entin-Wohlman, and Aharony [10,11]. The main outcome of the latter work is sometimes referred to as the KSEA anisotropy and is the subject of current experimental investigation in the related context of helimagnetism [12].…”
Section: Introductionmentioning
confidence: 99%
“…These features were attributed to DM interactions. [3][4][5] Yildirim et al 6 did a careful microscopic study of this mechanism for tetragonal copper-oxide systems. In particular, their analysis proved that the orthorhombic distortion present in these materials is irrelevant to the out-of-plane magnetic anisotropy.…”
mentioning
confidence: 99%