Charge Variations in Cuprate Superconductors from Nuclear Magnetic Resonance

Charge Variations in Cuprate Superconductors from Nuclear Magnetic Resonance
复制标题

核磁共振观察铜酸盐超导体的电荷变化

DOI:
10.1007/s10948-016-3827-1
复制
发表时间:
2016
影响因子:
1.8
通讯作者:
J. Haase
J. Haase
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
S. Reichardt;M. Jurkutat;A. Erb;J. Haase

文献摘要

参考文献

被引文献

相似文献

铜酸盐中的电荷不均匀性很早就被报道过,最近成为许多研究的焦点。核磁共振(NMR)通过电四极相互作用对局部电荷对称性非常敏感,必须检测任何静态电荷密度变化。最近在高磁场中进行的实验似乎在某些系统中诱导电荷密度波,这重新点燃了人们对静态不均匀性的兴趣。人们早就知道,除了少数材料外,在所有铜酸盐中都可以观察到过量的核磁共振线宽。然而,四极线宽与铜酸盐中电荷密度变化的关系尚不清楚。在这里,我们研究了yba2cu3o7,我们发现即使在低于约200k的中等磁场中,即远高于tc,也会出现与温度相关的核磁共振线宽,这一定与初始静电荷密度变化有关。我们认为,这确立了场感应电荷密度变化是铜酸盐中更普遍的现象。鉴于最近对CuO2plane中空穴分布与tc之间关系的理解,认为电荷密度的变化是普遍存在的,但似乎与最大tc无关。
Charge inhomogeneities in the cuprates were reported early on and have been in the focus of much research recently. Nuclear magnetic resonance (NMR) is very sensitive to local charge symmetry through the electric quadrupole interaction that must detect any static charge density variation. Recent experiments in high magnetic fields that seem to induce charge density waves in some systems have rekindled the interest in static inhomogeneities. It has long been known that excessive NMR linewidths can be observed in all cuprates, but with the exception of a few materials. However, the relation of the quadrupolar linewidths with respect to variations of the charge density in the cuprates is not understood. Here, we investigate YBa2Cu3O7and we find even in a moderate magnetic field that below about 200 K, i.e., well aboveTc, a temperature dependent NMR linewidth appears that must be related to incipient static charge density variations. We argue that this establishes field induced charge density variation as a more general phenomenon in the cuprates. In view of the very recent understanding of the relation between the hole distribution in the CuO2plane andTc, it is argued that charge density variations are ubiquitous, but appear not related to the maximumTc.
DOI: 10.1007/s10948-008-0376-2
发表时间: 2009-02
影响因子: 1.8
作者:
D. Rybicki;D. Rybicki;J. Haase;M. Greven;G. Yu;Yuan Li;Y. Cho;Y. Cho;Xudong Zhao;Xudong Zhao
通讯作者: D. Rybicki;D. Rybicki;J. Haase;M. Greven;G. Yu;Yuan Li;Y. Cho;Y. Cho;Xudong Zhao;Xudong Zhao
DOI: 10.1038/ncomms11413
发表时间: 2016-05-06
影响因子: 16.6
作者:
Rybicki D;Jurkutat M;Reichardt S;Kapusta C;Haase J
通讯作者: Haase J
高温超导体 La2-xSrxCuO4 的 Cu NMR 和 NQR 研究。
DOI: 10.1143/jpsj.63.700
发表时间: 1994
影响因子: 1.7
作者:
S. Ohsugi;Y. Kitaoka;K. Ishida;G. Zheng;K. Asayama
通讯作者: K. Asayama
YBA2CU3O6 X 正常状态下 17O 的 NMR 研究
DOI: 10.1143/jpsj.59.3698
发表时间: 1990
影响因子: 1.7
作者:
Y. Yoshinari;H. Yasuoka;Y. Ueda;K. Koga;K. Kosuge
通讯作者: K. Kosuge
通过 NMR 测定 La2 − xSrxCuO4 中的静电荷和自旋不均匀性
DOI: --
发表时间: 2002
期刊:
影响因子: --
作者:
J. Haase;C. Slichter;C. Milling
通讯作者: C. Milling