Coexistence of Dirac-cone states and superconductivity in iron pnictide Ba(Fe 1-x Ru x As) 2
Coexistence of Dirac-cone states and superconductivity in iron pnictide Ba(Fe 1-x Ru x As) 2
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DOI：
10.1103/physrevb.84.100508
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发表时间：
2011-06
影响因子：
3.7
通讯作者：
Y. Tanabe;K. K. Huynh-K.;S. Heguri;G. Mu;T. Urata;J. Xu;R. Nouchi;N. Mitoma;K. Tanigaki
中科院分区：
文献类型：
--
作者：
Y. Tanabe;K. K. Huynh-K.;S. Heguri;G. Mu;T. Urata;J. Xu;R. Nouchi;N. Mitoma;K. Tanigaki
本文用横向磁电阻（MR）随温度的变化研究了Ru掺杂对铁磷属元素化物超导体Ba（Fe${1-x}$Ru$_x$As）$_2 $中Dirac锥态的影响.在低于反铁磁转变的低温下，当x = 0 - 0.244时，观察到MR随磁场$B$的线性发展。利用Abrikosov提出的模型，用狄拉克锥态的量子极限解释了$B$线性磁共振。一个有趣的证据表明，狄拉克锥态持续的电子相图中的反铁磁性和超导性共存。
The Ru doping effect on the Dirac cone states is investigated in iron pnictide superconductors Ba(Fe$_{1-x}$Ru$_x$As)$_2$ using the transverse magnetoresistance (MR) measurements as a function of temperature. The linear development of MR against magnetic field $B$ is observed for $x$ = 0 - 0.244 at low temperatures below the antiferromagnetic transition. The $B$-linear MR is interpreted in terms of the quantum limit of the Dirac cone states by using the model proposed by Abrikosov. An intriguing evidence is shown that the Dirac cone state persists on the electronic phase diagram where the antiferromagnetism and the superconductivity coexist.