Anomalously strong near-neighbor attraction in doped 1D cuprate chains

被引：115

作者：

Chen, Zhuoyu ^{[1
,2
,3
]}

Wang, Yao ^{[4
]}

Rebec, Slavko N. ^{[1
,2
,3
]}

Jia, Tao ^{[1
,3
,5
]}

Hashimoto, Makoto ^{[6
]}

Lu, Donghui ^{[6
]}

Moritz, Brian ^{[1
]}

Moore, Robert G. ^{[1
,7
]}

Devereaux, Thomas P. ^{[1
,3
,8
]}

Shen, Zhi-Xun ^{[1
,2
,3
,5
]}

机构：

[1] Stanford Inst Mat & Energy Sci, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[2] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[3] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[4] Clemson Univ, Dept Phys & Astron, Clemson, SC 29631 USA

[5] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[6] Stanford Synchrotron Radiat Lightsource, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[7] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[8] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

来源：

SCIENCE | 2021年 / 373卷 / 6560期

关键词：

SPECTRAL FUNCTIONS; HUBBARD-MODEL; SUPERCONDUCTIVITY; SEPARATION;

D O I：

10.1126/science.abf5174

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：

In the cuprates, one-dimensional (1D) chain compounds provide a distinctive opportunity to understand the microscopic physics, owing to the availability of reliable theories. However, progress has been limited by the challenge of controllably doping these materials. We report the synthesis and spectroscopic analysis of the 1D cuprate Ba2-xSrxCuO3+delta over a wide range of hole doping. Our angle-resolved photoemission experiments reveal the doping evolution of the holon and spinon branches. We identify a prominent folding branch whose intensity fails to match predictions of the simple Hubbard model. An additional strong near-neighbor attraction, which may arise from coupling to phonons, quantitatively explains experiments for all accessible doping levels. Considering structural and quantum chemistry similarities among cuprates, this attraction may play a similarly important role in high-temperature cuprate superconductors.

引用

页码：1235 / +

页数：17

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