Magnetic Quantum Oscillations in YBa2Cu3O6.61 and YBa2Cu3O6.69 in Fields of Up to 85 T: Patching the Hole in the Roof of the Superconducting Dome

被引：67

作者：

Singleton, John ^{[1
]}

de la Cruz, Clarina ^{[2
,3
]}

McDonald, R. D. ^{[1
]}

Li, Shiliang ^{[2
,4
]}

Altarawneh, Moaz ^{[1
]}

Goddard, Paul ^{[5
]}

Franke, Isabel ^{[5
]}

Rickel, Dwight ^{[1
]}

Mielke, C. H. ^{[1
]}

Yao, Xin ^{[6
]}

Dai, Pengcheng ^{[2
,3
,4
]}

机构：

[1] Los Alamos Natl Lab, Natl High Magnet Field Lab, Los Alamos, NM 87545 USA

[2] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[3] Oak Ridge Natl Lab, Neutron Scattering Sci Div, Oak Ridge, TN 37831 USA

[4] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[5] Univ Oxford, Clarendon Lab, Dept Phys, Oxford OX1 3PU, England

[6] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200030, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

FERMI-SURFACE; C SUPERCONDUCTOR; TEMPERATURE; POCKETS;

D O I：

10.1103/PhysRevLett.104.086403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure magnetic quantum oscillations in the underdoped cuprates YBa2Cu3O6+x with x = 0.61, 0.69, using fields of up to 85 T. The quantum-oscillation frequencies and effective masses obtained suggest that the Fermi energy in the cuprates has a maximum at hole doping p approximate to 0.11-0.12. On either side, the effective mass may diverge, possibly due to phase transitions associated with the T = 0 limit of the metal-insulator crossover (low-p side), and the postulated topological transition from small to large Fermi surface close to optimal doping (high p side).

引用

页数：4

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