Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855Sr0.145CuO4: an inelastic neutron-scattering study.
Magnetic-field-induced soft-mode quantum phase transition in the high-temperature superconductor La1.855Sr0.145CuO4: an inelastic neutron-scattering study.
复制标题
高温超导体 La1.855Sr0.145CuO4 中磁场诱导的软模量子相变：一项非弹性中子散射研究。
DOI：
10.1103/physrevlett.102.177006
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发表时间：
2009
影响因子：
8.6
通讯作者：
Chang J
中科院分区：
文献类型：
--
作者：
Chang J
高温超导体的非弹性中子散射实验揭示了一个磁激发间隙，该间隙在垂直于平面的磁场作用下不断减小。差距消失在临界场所需的诱导长程无公度反铁磁秩序，提供了令人信服的证据，场诱导软模驱动的量子相变。
Inelastic neutron-scattering experiments on the high-temperature superconductorreveal a magnetic excitation gapthat decreases continuously upon application of a magnetic field perpendicular to theplanes. The gap vanishes at the critical field required to induce long-range incommensurate antiferromagnetic order, providing compelling evidence for a field-induced soft-mode driven quantum phase transition.