| YBa_2Cu_3O_7中Cu的NQR自旋晶格弛豫研究 |
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| 引用本文： | 董正超,徐曙,边明华,邬学文.YBa_2Cu_3O_7中Cu的NQR自旋晶格弛豫研究[J].上海师范大学学报(自然科学版),1991(2). |
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| 作者姓名： | 董正超 徐曙 边明华 邬学文 |
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| 作者单位： | 华东师范大学分析测试中心，华东师范大学分析测试中心，华东师范大学分析测试中心，华东师范大学分析测试中心 |
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| 摘 要： | 在室温至77K 范围内,测量了 YBa_2Cu_3O_7高 T。超导体中 Cu 的核四极共振的自旋晶格弛豫时间。磁化矢量的增长服从单指数规律,自旋晶格弛豫主要由于磁偶极相互作用。弛豫时间与温度的关系,在 T_o 以上可近似用 T_1T~(0.5)=常数拟合,在 T_o 以下,未观察到经典 BGS 超导体的弛豫行为。
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| 关 键 词： | 超导体 YBa_2Cu_3O_7 NQR 自旋晶格弛豫 |
The Studies of NQR Spin Lattice Relaxation of Cu in Y Ba_2Cu_3O_7 |
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| DON ZHENCHAO XU SHU BIAN MINHUA WU XUEWEN.The Studies of NQR Spin Lattice Relaxation of Cu in Y Ba_2Cu_3O_7[J].Journal of Shanghai Normal University(Natural Sciences),1991(2). |
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| Authors: | DON ZHENCHAO XU SHU BIAN MINHUA WU XUEWEN |
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| Abstract: | The spin lattice relaxation time of high T_c super-conductor YBa_2Cu_3O_7 was measured in the interval from room temperature to 77 K.The magnetization was increased exponentially.The machenism of spin lattice relaxation was mainly due to the magnetic dipole dipole interaction.The relation between T_1 and T can be simulated by the equation T_1T~(0.5)=Const.above T_c,and below T_c the classical BCS superconductor behavior was not found. |
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| Keywords: | superconductor YBa_2Cu_3O_7 NQR relaxation |
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