Quantum criticality tuned by magnetic field in optimally electron-doped cuprate thin films
文献类型：期刊论文
| 作者 | Zhang, Xu; Yu, Heshan2; Chen, Qihong; Yang, Runqiu3,4,5; He, Ge; Lin, Ziquan; Li, Qian; Yuan, Jie7; Zhu, Beiyi; Li, Liang |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2021 |
| 卷号 | 103期号:1页码:14517 |
| ISSN号 | 2469-9950 |
| 关键词 | ORDER SUPERCONDUCTIVITY FLUCTUATIONS TRANSITION |
| DOI | 10.1103/PhysRevB.103.014517 |
| 英文摘要 | Antiferromagnetic (AF) spin fluctuations are commonly believed to play a key role in electron pairing of cuprate superconductors. In electron-doped cuprates, a paradox still exists about the interplay among different electronic states in quantum perturbations, especially between superconducting and magnetic states. Here, we report a systematic transport study of cation-optimized La2-xCexCuO4 +/-delta (x = 0.10) thin films in high magnetic fields. We find an AF quantum phase transition near 60 T, where the Hall number jumps from n(H) = -x to n(H) = 1 - x, resembling the change in n(H) at the AF boundary (x(AF) = 0.14) tuned by Ce doping. In the AF region a spin-dependent state manifesting anomalous positive magnetoresistance is observed, which is closely related to superconductivity. Once the AF state is suppressed by magnetic field, a polarized ferromagnetic state is predicted, reminiscent of the recently reported ferromagnetic state at the quantum end point of the superconducting dome by Ce doping. The magnetic field that drives phase transitions in a manner similar to but distinct from doping thereby provides a unique perspective to understand the quantum criticality of electron-doped cuprates. |
| 学科主题 | Materials Science ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27453]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA 4.Korea Inst Adv Study, Quantum Universe Ctr, Seoul 130722, South Korea 5.Tianjin Univ, Ctr Joint Quantum Studies, Sch Sci, Yaguan Rd 135, Tianjin 300350, Peoples R China 6.Tianjin Univ, Dept Phys, Sch Sci, Yaguan Rd 135, Tianjin 300350, Peoples R China 7.Huazhong Univ Sci & Technol, Wuhan Natl High Magnet Field Ctr, Wuhan 430074, Peoples R China 8.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China 9.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 10.Loughborough Univ, Dept Phys, Loughborough LE11 3TU, Leics, England |
| 推荐引用方式 GB/T 7714 | Zhang, Xu,Yu, Heshan,Chen, Qihong,et al. Quantum criticality tuned by magnetic field in optimally electron-doped cuprate thin films[J]. PHYSICAL REVIEW B,2021,103(1):14517. |
| APA | Zhang, Xu.,Yu, Heshan.,Chen, Qihong.,Yang, Runqiu.,He, Ge.,...&Jin, Kui.(2021).Quantum criticality tuned by magnetic field in optimally electron-doped cuprate thin films.PHYSICAL REVIEW B,103(1),14517. |
| MLA | Zhang, Xu,et al."Quantum criticality tuned by magnetic field in optimally electron-doped cuprate thin films".PHYSICAL REVIEW B 103.1(2021):14517. |
入库方式： OAI收割
来源：理论物理研究所
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