2011年2月
Abrupt recovery of Fermi-liquid transport following the collapse of the c axis in CaFe2(As1-xPx)(2) single crystals
PHYSICAL REVIEW B
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- 巻
- 83
- 号
- 6
- 開始ページ
- 060505(R)-1
- 終了ページ
- 060505(R)-4
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.83.060505
- 出版者・発行元
- AMER PHYSICAL SOC
Single crystals of CaFe2(As1-xPx)(2) are found to exhibit the tetragonal (T) to collapsed-tetragonal (cT) transition at T-cT less than or similar to 100 K for x > 0.05. The c-axis shrinks by similar to 9% below T-cT, which substantially diminishes the interband nesting between the hole and electron bands. In sharp contrast to the superconducting T phase of AFe(2)(As1-xPx)(2) (A = Ba, Sr), where the anomalous non-Fermi liquid transport properties are observed, the resistivity, Hall coefficient, and magnetoresistance data in the Ca-based system all indicate that the standard Fermi liquid behaviors are recovered abruptly below T-cT, and the superconductivity disappears completely. The simultaneous disappearance of the superconductivity and the non-Fermi liquid transport enlightens the essential role of interband-associated fluctuations to the superconductivity in Fe pnictides.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevB.83.060505
- ISSN : 1098-0121
- J-Global ID : 201102284815917535
- Web of Science ID : WOS:000287584400005