Nearly antiferromagnetic Fermi liquids: a progress report
Nearly antiferromagnetic Fermi liquids: a progress report
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近反铁磁费米液体：进展报告
DOI：
10.1007/s002570050346
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
D. Pines
中科院分区：
文献类型：
--
作者：
D. Pines
描述了在铜酸盐超导体正常态下发现的二维近反铁磁费米液体(NAFL)的物理性质的最新理论和实验进展。在这种NAFL中，平面准粒子之间的磁相互作用很强，并且在公度波矢Q≡(Fy)或附近达到峰值。对于最佳掺杂和欠掺杂系统，产生的强反铁磁关联在正常态下产生了三个不同的磁相：Tcr以上的平均场，Tcr和T*之间的赝标度，以及T*以下的赝隙。本文论证了在TCR以下的准粒子谱中发现的赝隙的物理起源是自旋密度波态的前驱物质的形成，描述了基于动力学自旋磁化率、费米面演化、输运和霍尔效应的计算，并总结了支持它的实验证据。
I describe recent theoretical and experimental progress in understanding the physical properties of the two dimensional nearly antiferromagnetic Fermi liquids (NAFL's) found in the normal state of the cuprate superconductors. In such NAFL's, the magnetic interaction between planar quasiparticles is strong and peaked at or near the commensurate wave vector,Q≡ (fy fy). For the optimally doped and underdoped systems, the resulting strong antiferromagnetic correlations produce three distinct magnetic phases in the normal state: mean field above Tcr, pseudoscaling between Tcrand T*, and pseudogap below T*. I present arguments which suggest that the physical origin of the pseudogap found in the quasiparticle spectrum below Tcr is the formation of a precursor to a spin-densitywave- state, describe the calculations based on this scenario of the dynamical spin susceptibility, Fermi surface evolution, transport, and Hall effect, and summarize the experimental evidence in its support.