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arXiv 1606.09369cond-mat.supr-concond-mat.mtrl-scicond-mat.str-el
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Nb2PdSe5化合物在5.5 K的超导电性

Superconductivity at 5.5 K in Nb2PdSe5 compound

Reena Goyal, Govind Gupta, A. K. Srivastava, V. P. S. Awana

摘要:

我们报道了合成的Nb 2 PdSe 5中的超导性,其类似于最近发现的具有非常高的上临界场的Nb 2 PdS 5化合物,明显高于泡利顺磁极限[Sci. 3,1446(2013)]。采用固相反应法合成了纯相结构的Nb_2PdSe_5块体多晶样品。通过X射线衍射和Rietveld精修对样品进行了结构表征,结果表明Nb_2PdSe_5为单斜晶系,空间群为C_2/m。结构分析表明,形成共享的一维PdSe 2链。电磁测量证实了Nb_2PdSe_5化合物在5.5K下的超导电性。详细的磁电阻测试结果表明,薄膜的上临界磁场约为8.2T。估计的Hc 2(0)在泡利顺磁极限内,这与Nb 2 PdS 5不同。

英文摘要:

We report superconductivity in as synthesized Nb2PdSe5, which is similar to recently discovered Nb2PdS5 compound having very high upper critical field, clearly above the Pauli paramagnetic limit [Sci. Rep. 3, 1446 (2013)]. A bulk polycrystalline Nb2PdSe5 sample is synthesized by solid state reaction route in phase pure structure. The structural characterization has been done by X ray diffraction, followed by Rietveld refinements, which revealed that Nb2PdSe5 sample is crystallized in monoclinic structure with in space group C2/m. Structural analysis revealed the formation of sharing of one dimensional PdSe2 chains. Electrical and magnetic measurements confirmed superconductivity in Nb2PdSe5 compound at 5.5K. Detailed magneto-resistance results, exhibited the value of upper critical field to be around 8.2Tesla. The estimated Hc2(0) is within Pauli Paramagnetic limit, which is unlike the Nb2PdS5.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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