Anomalous normal-state magnetotransport in an electron-doped cuprate

Nicholas R. Poniatowski; Tarapada Sarkar; Richard L. Greene

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Anomalous normal-state magnetotransport in an electron-doped cuprate

机译：在电子掺杂的铜酸铜中的异常正常状态磁传输

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We report magnetoresistance and Hall angle measurements of the electron-doped cuprate La_(2-x)Ce_xCuO_4 over a wide range of dopings from x = 0.08-0.17. Above 100 K, we find an unconventional ～H~(3/2) magnetic field dependence of the magnetoresistance observed in all samples doped within the superconducting dome. Further, the measured magnetoresistance violates Kohler's rule. Given the ubiquity of this anomalous magnetoresistance at high temperatures above the superconducting dome, we speculate that the origin of this behavior is linked to the unusual ρ～ T~2 resistivity observed over the same wide parameter range at high temperatures. We also find a strong doping dependence of the Hall angle with an unconventional temperature dependence of cot θ_H～T~4 (T~(2.5)) for samples doped below (above) the Fermi surface reconstruction doping x_(FSR) =0.14.

机译：我们在X = 0.08-0.17的各种掺杂范围内报告电子掺杂的铜酸La_（2-x）Ce_xcuo_4的磁阻和霍尔角测量。在100 k以上，我们发现在超导圆顶内掺杂的所有样品中观察到的磁阻的非传统〜H〜（3/2）磁场依赖性。此外，测量的磁阻违反了科勒的规则。鉴于超导圆顶高于高温下这种异常磁阻的u特异性，我们推测了这种行为的起源与在高温下相同宽参数范围内观察到的异常ρ〜T〜2电阻率。我们还发现大厅角度的强烈掺杂依赖性，具有下面的（上述）的样品θ_h〜t〜4（t〜（2.5））的非常规温度依赖性（上述）Fermi表面重建掺杂X_（FSR）= 0.14。

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《Physical review.B.Condensed matter and materials physics》 |2021年第12期|125102.1-125102.5|共5页
作者
Nicholas R. Poniatowski; Tarapada Sarkar; Richard L. Greene;
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Maryland Quantum Materials Center and Department of Physics University of Maryland College Park Maryland 20742 USA;

Maryland Quantum Materials Center and Department of Physics University of Maryland College Park Maryland 20742 USA;

Maryland Quantum Materials Center and Department of Physics University of Maryland College Park Maryland 20742 USA;

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1. Carrier confinement effects observed in the normal-state electrical transport of electron-doped cuprate trilayers [J] . Sacco Chiara, Galdi Alice, Romeo Francesco, Journal of Physics, D. Applied Physics: A Europhysics Journal . 2019,第13期

机译：在电子掺杂的铜替换三层铜的正常状态电气传输中观察到的载波限制效应
2. Correlation between scale-invariant normal-state resistivity and superconductivity in an electron-doped cuprate [J] . Tarapada Sarkar, P. R. Mandal, N. R. Poniatowski, Science Advances . 2019,第5期

机译：电子掺杂铜酸盐中尺度不变常态电阻率与超导性的相关性
3. The Role of Quantum Interference Effects in Normal-State Transport Properties of Electron-Doped Cuprates [J] . Orgiani P., Galdi A., Sacco C., Journal of Superconductivity and Novel Magnetism . 2015,第12期

机译：量子干涉效应在掺杂电子的铜酸盐的正常态输运性质中的作用
4. Scaling behavior of the normal-state properties of the underdoped high-Tc cuprates [C] . Victor V. Moshchalkov, Katholieke Univ. Leuven, Leuven, Superconducting and Related Oxides: Physics and Nanoengineering III . 1998

机译：掺杂不足的高Tc铜酸盐的常态性质的标度行为
5. Neutron scattering studies on magnetism and phonon in the electron-doped neodymium-cerium cuprate and praseodymium-lanthanide-cerium cuprate [D] . Kang, Hye Jung 2005

机译：电子掺杂钕 - 铜酸铜和镨 - 镧系元素 - 铜酸铈 - 铜铜矿中的中子散射研究
6. Correlation between scale-invariant normal-state resistivity and superconductivity in an electron-doped cuprate [O] . Tarapada Sarkar, P. R. Mandal, N. R. Poniatowski, 2019

机译：电子掺杂铜酸盐中尺度不变的常态电阻率与超导性的相关性
7. Infrared properties of electron-doped cuprates: Tracking normal-state gaps and quantum critical behavior in Pr 2 − x Ce x CuO 4 [O] . A Zimmers, J. M Tomczak, R. P. S. M Lobo, 2005

机译：电子掺杂铜酸铜的红外特性：跟踪PR 2 - X CE X CuO 4中的正常状态间隙和量子临界行为

Anomalous normal-state magnetotransport in an electron-doped cuprate

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