论文标题
确定来自NMR或条纹的超导粉菜中掺杂电荷密度
Determination of doped charge density in superconducting cuprates from NMR or stripes
论文作者
论文摘要
核四极共振（NQR）的独立调查和高$ t_c $ cuprates中的条纹的独立调查发现，掺杂孔密度$ h $的小偏差与$ la_ {2-x} sr_xcuo_4 $的掺杂水平相比。用NQR观察到的值，$ x -h \约0.02 $，与巡回孔的密度密切一致，$ \ tilde {p} $，负责抑制3D -AFM的纽约，这是从条纹的不可通信中获得的。 Stripe模型的假设是，$ la_ {2-x} sr_xcuo_4 $属于氧气站点，并且在$ ln_ {2-x} ce_xcuo_4 $（$ ln = pr，nd $ nd $）中掺杂电子（ce_xcuo_4 $）在铜现场（copper copper Sites），居住在铜网站上（to a Gate to A n Q）。 The NQR finding of doped-hole probabilities in oxygen and copper orbitals of $HgBa_2CuO_{4+δ}$ and other oxygen-enriched high-$T_c$ cuprates, $P_p \simeq P_d \simeq 1/2$, as well as of oxygen-doped $YBa_2Cu_3O_{6+y}$, $ p_p \ simeq 2p_d \ simeq 2/3 $，用条纹模型解释，以$ cuo_2 $ planes和$ cuo $链条中的多余氧原子来解释。
Independent investigations of nuclear quadrupole resonance (NQR) and of stripes in high-$T_c$ cuprates find a small deviation of doped-hole density $h$ from the doping level of $La_{2-x}Sr_xCuO_4$. The value observed with NQR, $ x - h \approx 0.02$, agrees closely with the density of itinerant holes, $\tilde{p}$, responsible for suppression of 3D-AFM, as obtained from stripe incommensurability. The stripe model's assumption that doped holes in $La_{2-x}Sr_xCuO_4$ reside at oxygen sites, and that doped electrons in $Ln_{2-x}Ce_xCuO_4$ ($Ln = Pr, Nd$) reside at copper sites, is (to a large degree) confirmed with NQR. The NQR finding of doped-hole probabilities in oxygen and copper orbitals of $HgBa_2CuO_{4+δ}$ and other oxygen-enriched high-$T_c$ cuprates, $P_p \simeq P_d \simeq 1/2$, as well as of oxygen-doped $YBa_2Cu_3O_{6+y}$, $P_p \simeq 2P_d \simeq 2/3$, is interpreted with the stripe model in terms of excess oxygen atoms in the $CuO_2$ planes and $CuO$ chains.
