Transport Properties and Cationic Substitutions in Sr2IrO4
Transport Properties and Cationic Substitutions in Sr2IrO4
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DOI：
10.1007/s11664-008-0642-x
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发表时间：
2009-01
影响因子：
2.1
通讯作者：
Y. Klein;I. Terasaki
中科院分区：
文献类型：
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作者：
Y. Klein;I. Terasaki
我们实现了Sr 2 IrO 4的阳离子取代，并测量了电阻率，热电功率和霍尔系数。一个双载流子模型，反映了在高温下的热激活载流子的存在下，定性地解释了霍尔系数的行为Sr1.95La0.05IrO4相比，Sr 2 IrO 4。对于不同的过渡金属取代Ir，Pt的5电子态不影响输运性质，而Ti和Rh的3电子态和4电子态则相反。这可能是由于Ir和Pt与3dor 4d过渡金属相比具有较强的自旋-轨道耦合。
We realized cationic substitutions in Sr2IrO4and measured resistivity, thermoelectric power, and the Hall coefficient. A two-carrier model, reflecting the presence of thermally activated carriers at high temperature, qualitatively explains the behavior of the Hall coefficient of Sr1.95La0.05IrO4in comparison with Sr2IrO4. Concerning the substitution of Ir by different transition metals, Pt with 5dorbitals does not affect the transport properties, contrary to Ti and Rh with 3dand 4dorbitals, respectively. This may be explained by strong spin–orbit coupling involved in Ir and Pt, in comparison with 3dor 4dtransition metals.