| Nd1.85Ce0.15CuO4－δ单晶c-轴方向电阻的低场行为 |
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| 引用本文： | 李配军,王智河,白 忠,聂 阳,邱 里,徐小农. Nd1.85Ce0.15CuO4－δ单晶c-轴方向电阻的低场行为[J]. 物理学报, 2006, 55(6): 3018-3021 |
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| 作者姓名： | 李配军 王智河 白 忠 聂 阳 邱 里 徐小农 |
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| 作者单位： | 南京大学物理系固体微结构国家重点实验室,南京 210093 |
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| 基金项目： | 国家自然科学基金(批准号：10174033)和南京大学预研基金资助的课题. |
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| 摘 要： | 采用自助熔剂缓冷法成功地生长出了Nd1.85Ce0. 15CuO4-δ单晶，其零场下零电阻温度约为21K. 在0—0.5T范围内分别测量了磁场平行和垂直样品表面的电阻转变曲线以及0.5T不同角度下的电阻转变曲线. 结果显示磁场平行和垂直样品表面时的转变温度Tp随磁场的变化均服从H=H0(1-Tp(h)/Tp(0))2关系. 0.5T关键词：1.85Ce0.15CuO4-δ单晶')" href="#">Nd1.85Ce0.15CuO4-δ单晶输运性质
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| 关 键 词： | Nd1.85Ce0.15CuO4-δ单晶 输运性质 |
| 文章编号： | 1000-3290/2006/55（06）/3018-04 |
| 收稿时间： | 2005-05-10 |
| 修稿时间： | 2005-05-102005-09-15 |
Resistivity of Nd1.85Ce0.15CuO4－δ single crystal along c-axis in lower field |
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| Li Pei-Jun,Wang Zhi-He,Bai Zhong,Nie Yang,Qiu Li and Xu Xiao-Nong. Resistivity of Nd1.85Ce0.15CuO4－δ single crystal along c-axis in lower field[J]. Acta Physica Sinica, 2006, 55(6): 3018-3021 |
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| Authors: | Li Pei-Jun Wang Zhi-He Bai Zhong Nie Yang Qiu Li Xu Xiao-Nong |
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| Affiliation: | National Laboratory of Solid State Microstructures , Department of Physics, Nanjing University, Nanjing 210093, China |
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| Abstract: | Nd1.85Ce0.15CuO4-δsingle crystals with zero-resistance temperature Tc0≈21K were successfully grown by self-flux slow cooling method. We have measured the resistivity transition curves along the c-axis in different fields parallel or perpendicular to the sample surface, respectively, and at fixed field H=0.5T for various angles. The result shows that the field dependence of differential-resistance peak temperature Tp follows the formula H=H0(1-Tp(h)/Tp(0))2 for H//c-axis and H//ab-plane, respectively. The angular dependence of peak temperature Tp can be scaled by the effective mass model as Tp∝H1/2(cos2θ+sin2θ/γ2)1/4. The anisotropic parameter γ of the crystal is about 45. |
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| Keywords: | Nd1.85Ce0.15CuO4-δ single crystals transition character |
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