Fermi-liquid behavior in an underdoped high-Tc superconductor

被引：40
|
作者：
Sebastian, Suchitra E. [1 ]
Harrison, N. [2 ]
Altarawneh, M. M. [2 ]
Liang, Ruixing [3 ,4 ]
Bonn, D. A. [3 ,4 ]
Hardy, W. N. [3 ,4 ]
Lonzarich, G. G. [1 ]
机构：
[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England
[2] LANL, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA
[3] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada
[4] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 14期
关键词：
INSULATOR; SURFACE; PHYSICS;
D O I：
10.1103/PhysRevB.81.140505
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We use magnetic quantum oscillations in the underdoped high T-c superconductor YBa2Cu3O6+x (x approximate to 0.56) measured over a broad range of temperatures 100 mK < T < 18 K to extract the form of the distribution function describing the low-lying quasiparticle excitations in high magnetic fields. Despite the proximity of YBa2Cu3O6.56 to a Mott insulating state, various broken symmetry ground states and/or states with different quasiparticle statistics, we find that our experimental results can be understood in terms of quasiparticle excitations obeying Fermi-Dirac statistics as in the Landau-Fermi liquid theory.
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页数：4
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