期刊
NATURE COMMUNICATIONS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-018-02841-9
关键词
-
资金
- DOE-BES [DE-FG02-07ER46419]
- Gordon and Betty Moore Foundation as part of EPiQS initiative [GBMF4530]
- NSF-MRSEC programs through the Princeton Center for Complex Materials [DMR-1420541, NSF-DMR-1608848, ONR-N00014-14-1-0330, ONR-N00014-13-10661]
- Eric and Wendy Schmidt Transformative Technology Fund at Princeton
- US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering
- Dicke Fellowship
- NSF Graduate Research Fellowship
- U.S. National Science Foundation CAREER [NSF-DMR 1654482]
Layered material structures play a key role in enhancing electron-electron interactions to create correlated metallic phases that can transform into unconventional superconducting states. The quasi-two-dimensional electronic properties of such compounds are often inferred indirectly through examination of bulk properties. Here we use scanning tunneling microscopy to directly probe in cross-section the quasi-two-dimensional electronic states of the heavy fermion superconductor CeCoIn5. Our measurements reveal the strong confined nature of quasiparticles, anisotropy of tunneling characteristics, and layer-by-layer modulated behavior of the precursor pseudogap gap phase. In the interlayer coupled superconducting state, the orientation of line defects relative to the d-wave order parameter determines whether in-gap states form due to scattering. Spectroscopic imaging of the anisotropic magnetic vortex cores directly characterizes the short interlayer superconducting coherence length and shows an electronic phase separation near the upper critical in-plane magnetic field, consistent with a Pauli-limited first-order phase transition into a pseudogap phase.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据