Magnetic quantum oscillations and multiple holon pockets in the underdoped cuprate YBa2Cu3O6+y

被引：4

作者：

Chen, Wei ^{[1
]}

Sushkov, Oleg P. ^{[1
]}

Tohyama, Takami ^{[2
]}

机构：

[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

[2] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 06期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTORS; T-C SUPERCONDUCTOR; FERMI-SURFACE; CRITICAL-POINT; COPPER-OXIDE; STATE; ANTIFERROMAGNET; DYNAMICS; IMPURITY; PHASE;

D O I：

10.1103/PhysRevB.82.060511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show that lightly doped YBa2Cu3O6+y has multiple holon pockets with different areas, which lead to multiple frequencies of magnetic quantum oscillations. Using neutron-scattering data on incommensurate spin ordering we determine these areas, which yields frequencies in good agreement with experiments. Divergence of the effective mass observed in magnetic quantum oscillations indicates a quantum phase transition at the oxygen content y approximate to 0.48. We argue that the transition is the onset of quasistatic incommensurate magnetic order predicted by theory and observed in neutron scattering.

引用

页数：4

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