日本語
 
Help Privacy Policy ポリシー/免責事項
  詳細検索ブラウズ

アイテム詳細

登録内容を編集ファイル形式で保存
 
 
ダウンロード電子メール
  Phonon-drag effect in FeGa3

Wagner-Reetz, M., Kasinathan, D., Schnelle, W., Cardoso-Gil, R., Rosner, H., Grin, Y., & Gille, P. (2014). Phonon-drag effect in FeGa3. Physical Review B, 90(19):, pp. 1-11. doi:10.1103/PhysRevB.90.195206.

Item is

基本情報

表示: 非表示:
資料種別: 学術論文

ファイル

表示: ファイル

関連URL

表示:

作成者

表示:
非表示:
 作成者:
Wagner-Reetz, Maik1, 著者           
Kasinathan, Deepa1, 著者           
Schnelle, Walter2, 著者           
Cardoso-Gil, Raul3, 著者           
Rosner, Helge4, 著者           
Grin, Yuri5, 著者           
Gille, P.6, 著者
所属:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
3Raul Cardoso, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863420              
4Helge Rosner, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863450              
5Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              
6External Organizations, ou_persistent22              

内容説明

表示:
非表示:
キーワード: -
 要旨: The thermoelectric properties of single-crystalline and polycrystalline FeGa 3 are systematically investigated over a wide temperature range. At low temperatures, below 20 K, previously not known pronounced peaks in the thermal conductivity (400-800WK -1 m -1) with corresponding maxima in the thermopower (in the order of -16000muV K -1) were found in single-crystalline samples. Measurements in single crystals along [100] and [001] directions indicate only a slight anisotropy in both the electrical and thermal transports. From susceptibility and heat-capacity measurements, a magnetic or structural phase transition was excluded. Using density functional theory based calculations, we have revisited the electronic structure of FeGa 3 and compared the magnetic (including correlations) and nonmagnetic electronic densities of states. Thermopower at fixed carrier concentrations is calculated using semiclassical Boltzmann transport theory, and the calculated results match fairly with our experimental data. The inclusion of strong electron correlations treated in a mean field manner (by LSDA + U) does not improve this comparison, rendering strong correlations as the sole explanation for the low-temperature enhancement unlikely. Eventually, after a careful review, we assign the peaks in the thermopower as a manifestation of the phonon-drag effect, which is supported by thermopower measurements in a magnetic field.

資料詳細

表示:
非表示:
言語: eng - English
 日付: 2014-11-25
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: -
 識別子(DOI, ISBNなど): ISI: 14754338
DOI: 10.1103/PhysRevB.90.195206
 学位: -

関連イベント

表示:

訴訟

表示:

Project information

表示:

出版物 1

表示:
非表示:
出版物名: Physical Review B
  省略形 : Phys. Rev. B
種別: 学術雑誌
 著者・編者:
所属:
出版社, 出版地: Woodbury, NY : American Physical Society
ページ: - 巻号: 90 (19) 通巻号: 195206 開始・終了ページ: 1 - 11 識別子(ISBN, ISSN, DOIなど): ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008