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arXiv 2306.01239cond-mat.supr-con
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La$_2$IOs$_2$(一种具有锇蜂窝层的5d金属)中12 K的超导性

Superconductivity at 12 K in La$_2$IOs$_2$: a 5d metal with osmium honeycomb layer

Hajime Ishikawa, Takeshi Yajima, Daisuke Nishio-Hamane, Shusaku Imajo, Koichi Kindo, Mitsuaki Kawamura

AI总结:

本研究在含锇蜂窝层的层状5d金属La$_2$IOs$_2$中发现12 K超导性,并观察到低温电子反常,为探讨超导、电子反常与强磁场的相互作用提供新平台。

摘要:

我们在具有锇蜂窝网络的层状化合物La$_2$IOs$_2$中发现了$T_c$=12 K的超导性。尽管其重组成元素不利于声子介导机制,但其$T_c$在由较轻元素构成的镧系碘化物中最高,例如$T_c$=4.8 K的La$_2$IRu$_2$。在60 K以下观察到电子反常,类似于La$_2$IRu$_2$在140 K以下观察到的现象。La$_2$IOs$_2$是一种层状5d电子体系,为研究电子反常、超导性与强磁场之间的相互作用提供了平台。

英文摘要:

We discovered superconductivity at $T_c$ = 12 K in a layered compound La$_2$IOs$_2$ with osmium honeycomb network. Despite heavy constituent elements unfavorable for phonon mediated mechanism, $T_c$ is the highest among lanthanoid iodides made of lighter elements such as La$_2$IRu$_2$ with $T_c$ = 4.8 K. Electronic anomalies are observed below 60 K similar to those observed in La$_2$IRu$_2$ below 140 K. La$_2$IOs$_2$ is a layered 5d electron system providing a platform to investigate the interplay between the electronic anomaly, superconductivity, and strong magnetic field.

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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