期刊
PHYSICAL REVIEW LETTERS
卷 103, 期 25, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.256405
关键词
-
资金
- Trinity College (Cambridge University)
- U.S. Department of Energy
- National Science Foundation
- Engineering and Physical Sciences Research Council [EP/C511778/1] Funding Source: researchfish
We use quantum oscillation measurements to distinguish between spin and orbital components of the lowest energy quasiparticle excitations in YBa2Cu3O6.54, each of which couple differently to a magnetic field. Our measurements reveal the phase of the observed quantum oscillations to remain uninverted over a wide angular range, indicating that the twofold spin degeneracy of the Landau levels is virtually unaltered by the magnetic field. The inferred suppression of the spin degrees of freedom indicates a spin-density wave is responsible for creation of the small Fermi surface pockets in underdoped YBa2Cu3O6+x-further suggesting that excitations of this phase are important contributors to the unconventional superconducting pairing mechanism.
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