Incommensurate Magnetic Order and Dynamics Induced by Spinless Impurities in YBa2Cu3O6.6

被引：46

作者：

Suchaneck, A. ^{[1
]}

Hinkov, V. ^{[1
]}

Haug, D. ^{[1
]}

Schulz, L. ^{[2
,3
]}

Bernhard, C. ^{[2
,3
]}

Ivanov, A. ^{[4
]}

Hradil, K. ^{[5
]}

Lin, C. T. ^{[1
]}

Bourges, P. ^{[6
]}

Keimer, B. ^{[1
]}

Sidis, Y. ^{[6
]}

机构：

[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[2] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland

[3] Univ Fribourg, Fribourg Ctr Nanomat, CH-1700 Fribourg, Switzerland

[4] Inst Laue Langevin, F-38042 Grenoble 9, France

[5] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany

[6] CE Saclay, CEA, CNRS, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 03期

关键词：

HIGH-TEMPERATURE SUPERCONDUCTOR; NONMAGNETIC IMPURITIES; ZN-SUBSTITUTION; NEUTRON-SCATTERING; RESONANCE PEAK; STATE; SUSCEPTIBILITY; RELAXATION; CUPRATE; LIQUID;

D O I：

10.1103/PhysRevLett.105.037207

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report an inelastic-neutron-scattering and muon-spin-relaxation study of the effect of 2% spinless (Zn) impurities on the magnetic order and dynamics of YBa2Cu3O6.6, an underdoped high-temperature superconductor that exhibits a prominent spin pseudogap in its normal state. Zn substitution induces static magnetic order at low temperatures and triggers a large-scale spectral-weight redistribution from the magnetic resonant mode at 38 meV into uniaxial, incommensurate spin excitations with energies well below the spin pseudogap. These observations indicate a competition between incommensurate magnetic order and superconductivity close to a quantum critical point. Comparison to prior data on La2-xSrxCuO4 suggests that this behavior is universal for the layered copper oxides and analogous to impurity-induced magnetic order in one-dimensional quantum magnets.

引用

页数：4

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