Zero-resistance superconducting phase in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>BaFe</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mtext>As</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>under high pressure

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書誌事項

公開日
2009-05-27
権利情報
  • http://link.aps.org/licenses/aps-default-license
DOI
  • 10.1103/physrevb.79.172506
公開者
American Physical Society (APS)

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説明

A single-crystalline sample of ${\text{BaFe}}_{2}{\text{As}}_{2}$ was prepared by high-pressure synthesis, and temperature dependence of resistivity was measured under high pressures of up to 9.0 GPa. Application of 3.0 GPa pressure suppresses the spin-density wave transition and induces superconductivity with the zero resistance state at a superconducting transition temperature ${T}_{c}=35\text{ }\text{K}$. ${T}_{c}$ decreases monotonically with increasing pressure. The appearance of the superconductivity and the disappearance of the anomaly due to the spin-density wave transition occur simultaneously at a pressure of 3.0 GPa. At 3.0 GPa, a superconducting transition is induced in ${\text{BaFe}}_{2}{\text{As}}_{2}$; however, the superconductivity is suppressed at higher pressure.

収録刊行物

  • Physical Review B

    Physical Review B 79 (17), 172506-, 2009-05-27

    American Physical Society (APS)

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