Freezing of a stripe liquid

被引:41
作者
Lee, SH [1 ]
Tranquada, JM
Yamada, K
Buttrey, DJ
Li, Q
Cheong, SW
机构
[1] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[2] Univ Maryland, College Pk, MD 20742 USA
[3] Brookhaven Natl Lab, Upton, NY 11973 USA
[4] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan
[5] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA
[6] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08855 USA
[7] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA
关键词
D O I
10.1103/PhysRevLett.88.126401
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The existence of a stripe-liquid phase in a layered nickelate, La1.725Sr0.275NiO4, is demonstrated through neutron scattering measurements. We show that incommensurate magnetic fluctuations evolve continuously through the charge-ordering temperature, although an abrupt decrease in the effective damping energy is observed on cooling through the transition. The energy and momentum dependence of the magnetic scattering are parametrized with a damped-harmonic-oscillator model describing overdamped spin waves in the antiferromagnetic domains defined instantaneously by charge stripes.
引用
收藏
页码:4 / 126401
页数:4
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