期刊
NATURE PHYSICS
卷 7, 期 4, 页码 332-335出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS1921
关键词
-
资金
- NSF [DMR-0955561]
- Natural Science and Engineering Research Council of Canada
- Canadian Institute for Advanced Research
- State of Florida
- National Science Foundation's Division of Materials Research [DMR-0654118]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0955561] Funding Source: National Science Foundation
The underlying physics of the magnetic-field induced resistive state in lightly doped high-temperature cuprate superconductors remains a mystery. One interpretation is that the application of magnetic field destroys the d-wave superconducting gap, uncovering a Fermi surface that behaves as a Fermi liquid. Another view is that an applied magnetic field destroys long-range superconducting phase coherence, but the superconducting gap amplitude survives. By measuring the specific heat of YBa2Cu3O6.56 we determine the quasiparticle density of states from the superconducting state well into the magnetic-field induced resistive state. At very high magnetic fields the specific heat exhibits both the conventional temperature dependence and quantum oscillations expected for a Fermi liquid. On the other hand, the magnetic-field dependence of the quasiparticle density of states follows root H behaviour that persists smoothly through the zero-resistance transition, giving evidence of a developed d-wave superconducting gap over the entire magnetic field range measured.
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