Wavelength dependence of linear birefringence and linear dichroism of Bi2-<bold>x</bold>Pb<bold>x</bold>Sr2CaCu2O8+<bold>δ</bold> single crystals

被引：0

作者：

Tokita, Keigo ^{[1
]}

Nakagawa, Kenta ^{[2
]}

Zhang, Kun ^{[1
]}

Okano, Komei ^{[1
]}

Matsumoto, Masataka ^{[3
]}

Nakanishi, Takuya ^{[2
]}

Fujita, Masaki ^{[4
]}

Asahi, Toru ^{[1
]}

机构：

[1] Waseda Univ, Fac Sci & Engn, 2-2 Wakamatsu-cho Shinjuku Ku, Tokyo 1628480, Japan

[2] Waseda Univ, Comprehens Res Org, 2-2 Wakamatsu cho Shinjuku ku, Tokyo 1628480, Japan

[3] Shanghai Jiao Tong Univ, Sch Phys & Astron, Wilczek Quantum Ctr, Shanghai 200240, Peoples R China

[4] Tohoku Univ, Inst Mat Res, 2-1-1 Katahira Aoba-ku, Sendai, Miyagi 9808577, Japan

来源：

SCIENTIFIC REPORTS | 2024年 / 14卷 / 01期

关键词：

INCOMMENSURATE PHASE-TRANSITIONS; OPTICAL-ACTIVITY; X-RAY; SUPERCONDUCTING PROPERTIES; RAMAN-SCATTERING; ANISOTROPY; BI-2212; RESISTIVITY; SR; BI2SR2CACU2O8+DELTA;

D O I：

10.1038/s41598-024-78208-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Copper oxide high-temperature superconductors, such as Bi2Sr2CaCu2O8+delta (Bi2212), have garnered extensive research interest due to their high critical temperatures (Tc) surpassing the Bardeen-Cooper-Schrieffer (BCS) limit. The two-dimensional CuO2 plane is widely regarded as the most crucial element of high-Tc cuprate superconductors. The anisotropy of this CuO2 layer remains a topic of ongoing interest. Although a few experimental results have reported strong optical anisotropy in both ab and ac-planes of Bi2212 through optical "reflectivity" measurements, there is a lack of studies focusing on the optical anisotropy of these materials using optical "transmittance" measurements by utilizing ultraviolet and visible light. Using a generalized high-accuracy universal polarimeter, we observed significant linear birefringence and linear dichroism peaks in the UV region at room temperature. To investigate the origin of the significant optical anisotropy, single crystals of Bi2-xPbxSr2CaCu2O8+delta with different lead contents (x = 0, 0.4, and 0.6) were grown using the floating zone method, and the wavelength dependencies of linear birefringence and linear dichroism along the c axis were measured. The insights gained into the optical anisotropy of Bi2-xPbxSr2CaCu2O8+delta from this study are significant for discussing its origin of the mechanism of high-Tc superconductivity.

引用

页数：8

共 68 条

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