Abstract
We study the consequences of in-plane (Dp) and out-of-plane (Dz) Dzyaloshinsky-Moriya (DM) interactions on the thermodynamic properties of spin- 1 2 Heisenberg model on the kagome lattice using numerical linked cluster expansions and exact diagonalization and contrast them with those of other perturbations such as exchange anisotropy and dilution. We find that different combinations of the DM anisotropies lead to a wide variety of thermodynamic behavior, which are quite distinct from those of most other perturbations. We argue that the sudden upturn seen experimentally in the susceptibility of the material Zn Cu3 (OH)6 Cl2 can be understood in terms of Dzyaloshinsky-Moriya anisotropies with Dp > Dz. We also show that the measured specific heat of the material puts further constraints on the allowed DM parameters.
| Original language | English (US) |
|---|---|
| Article number | 184403 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 76 |
| Issue number | 18 |
| DOIs | |
| State | Published - Nov 2 2007 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Kagome lattice antiferromagnets and Dzyaloshinsky-Moriya interactions. / Rigol, Marcos; Singh, Rajiv R.P.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 76, No. 18, 184403, 02.11.2007.Research output: Contribution to journal › Article
TY - JOUR
T1 - Kagome lattice antiferromagnets and Dzyaloshinsky-Moriya interactions
AU - Rigol, Marcos
AU - Singh, Rajiv R.P.
PY - 2007/11/2
Y1 - 2007/11/2
N2 - We study the consequences of in-plane (Dp) and out-of-plane (Dz) Dzyaloshinsky-Moriya (DM) interactions on the thermodynamic properties of spin- 1 2 Heisenberg model on the kagome lattice using numerical linked cluster expansions and exact diagonalization and contrast them with those of other perturbations such as exchange anisotropy and dilution. We find that different combinations of the DM anisotropies lead to a wide variety of thermodynamic behavior, which are quite distinct from those of most other perturbations. We argue that the sudden upturn seen experimentally in the susceptibility of the material Zn Cu3 (OH)6 Cl2 can be understood in terms of Dzyaloshinsky-Moriya anisotropies with Dp > Dz. We also show that the measured specific heat of the material puts further constraints on the allowed DM parameters.
AB - We study the consequences of in-plane (Dp) and out-of-plane (Dz) Dzyaloshinsky-Moriya (DM) interactions on the thermodynamic properties of spin- 1 2 Heisenberg model on the kagome lattice using numerical linked cluster expansions and exact diagonalization and contrast them with those of other perturbations such as exchange anisotropy and dilution. We find that different combinations of the DM anisotropies lead to a wide variety of thermodynamic behavior, which are quite distinct from those of most other perturbations. We argue that the sudden upturn seen experimentally in the susceptibility of the material Zn Cu3 (OH)6 Cl2 can be understood in terms of Dzyaloshinsky-Moriya anisotropies with Dp > Dz. We also show that the measured specific heat of the material puts further constraints on the allowed DM parameters.
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U2 - 10.1103/PhysRevB.76.184403
DO - 10.1103/PhysRevB.76.184403
M3 - Article
AN - SCOPUS:35848954979
VL - 76
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 18
M1 - 184403
ER -