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Excitations in the Heisenberg ferromagnet at finite temperature using coherent potential approximation
| Content Provider | Scilit |
|---|---|
| Author | Taguena-Martinez, J. Elliott, R. J. |
| Copyright Year | 1977 |
| Description | Journal: Journal of Physics C: Solid State Physics The dynamical properties of the S=^{1}$/_{2}$ Heisenberg ferromagnet are studied using an extension of the RPA method. The effect of temperature is represented by a fixed array of up and down spins, including short-range-order effects. The spin wave excitations are calculated in this disordered array using the coherent-potential approximation (CPA) for a system of potentials due to the appropriate distribution of bonds. A relation between the number of reversed spins and temperature is derived from self consistency. The method gives a satisfactory approximation overall to the spin wave response at $T |
| Related Links | http://iopscience.iop.org/article/10.1088/0022-3719/10/5/015/pdf |
| Ending Page | 728 |
| Page Count | 10 |
| Starting Page | 719 |
| ISSN | 00223719 |
| DOI | 10.1088/0022-3719/10/5/015 |
| Journal | Journal of Physics C: Solid State Physics |
| Issue Number | 5 |
| Volume Number | 10 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 1977-03-14 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics C: Solid State Physics Condensed Matter Physics Spin Wave |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Condensed Matter Physics Engineering |
