Exchange energies, Curie temperatures and magnons in Heusler compounds

Thoene, Jan; Chadov, Stanislav; Fecher, Gerhard; Felser, Claudia; Kübler, Jürgen

doi:10.1088/0022-3727/42/8/084013

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Exchange energies, Curie temperatures and magnons in Heusler compounds

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Thoene, J., Chadov, S., Fecher, G., Felser, C., & Kübler, J. (2009). Exchange energies, Curie temperatures and magnons in Heusler compounds. Journal of Physics D: Applied Physics, 42(8):, pp. 1-6. doi:10.1088/0022-3727/42/8/084013.

引用: https://hdl.handle.net/11858/00-001M-0000-0018-98D9-5

要旨

Heisenberg exchange parameters for various Heusler compounds with L2(1) structure were calculated using the Korringa-Kohn-Rostoker method and by employing the magnetic-force theorem to calculate the total energy changes associated with a local rotation of magnetization directions. Random occupation was treated within the coherent potential approximation. Further, the Curie temperatures were calculated in the mean-field approximation and have been found to be in good agreement with the experiment. A procedure for evaluating the spin-stiffness constants for the case of multiple magnetic sublattices is given and the results were compared with measured values. Magnon dispersion curves were obtained by Fourier transforming the calculated exchange parameters.