STM studies on the pairing symmetry and pair breaking of high-Tc cuprates

高温铜酸盐配对对称性和配对破缺的STM研究

• 批准号: 07640458
• 负责人: ODA Migaku
• 金额: $ 1.6万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640458/
• 关键词: high-Tc cuprate; gap symmetry; pair breaking; STM; STS; pairing interaction; 走査型トンネル顕微鏡; 走査型トンネル分光; 超伝導ギャップ; 電子対の対称性; 銅酸物高温超伝導体; d波対称性

To understand the pairing mechanism of high-Tc cuprates, we have studied the superconducting gap symmetry and pair breaking effects in Bi-based high-Tc cuprate by STM/STS.The following results were obtained :1) The gap is of d_<x2-y2> symmetry.2) The gap magnitude, corresponding to the pairing interaction strength, correlates with the development of an antiferromagnetic correlation.These results support the contention that an antiferromagnetic correlation is an essential factor in the pairing mechanism of high-Tc cuprates.

为了了解高温铜酸盐的配对机制，我们通过STM/STS研究了Bi基高温铜酸盐的超导能隙对称性和对破断效应，得到了以下结果：1)能隙为d_<x2 -y2>对称性。2）间隙大小，对应于配对相互作用强度，与反铁磁相关性的发展相关。这些结果支持反铁磁相关性是一种反铁磁相关性的论点。高 Tc 铜酸盐配对机制中的重要因素。

项目成果

M. Ido: "Pressure effect on superconductivity and structural phase transition in La_<1.8-X>Nd_<a2>BaxCuO_4" Chechoslovak Journal of Physics. 46. 1235-1236 (1996)

M. Ido：“La_<1.8-X>Nd_<a2>BaxCuO_4 中超导性和结构相变的压力效应”《切乔斯洛伐克物理学杂志》。

M. Oda: "STM images of a superconducting Cu-O plane and the corresponding tunneling spectrum in Bi_2 Sr_2 CaCu_2 O_<8+δ>" Physical Review B. 53. 2253-2256 (1996)

M. Oda：“超导 Cu-O 平面的 STM 图像以及 Bi_2 Sr_2 CaCu_2 O_<8+δ> 中相应的隧道谱”物理评论 B. 53. 2253-2256 (1996)

M. Odo: "STM and STS studies on the supercorducting gap symmetry of Bi_2 Sr_2 Ca_2O_<8+8>" Physica C. 263. 241-244 (1996)

M. Odo：“Bi_2 Sr_2 Ca_2O_<8 8> 超导能隙对称性的 STM 和 STS 研究”Physica C. 263. 241-244 (1996)

M. Oda: "STM and STS studies on the superconducting gap symmetry of Bi_2 Sr_2 CaCu_2 O_<8+δ>" physica C. 263. 241-244 (1996)

M. Oda：“Bi_2 Sr_2 CaCu_2 O_<8+δ>超导能隙对称性的 STM 和 STS 研究” Physica C. 263. 241-244 (1996)

M.Oda, C.Manabe and M.Ido: "Atomic-Plane-Selective STM Imagging and STS on the Bi_2Sr_2CaCu_2O_<8+delta> Cleaved Surface" J.Low-Temperature Physics. 105. 489-494 (1996)

M.Oda、C.Manabe 和 M.Ido：“Bi_2Sr_2CaCu_2O_<8 delta> 裂面的原子平面选择性 STM 成像和 STS”J.低温物理。