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تسجيل مستخدم جديدنظرات NQR المنظمة للمرحلة الشريطية في La(1.6-x)Nd(0.4)Sr(x)CuO(4) ل 0.07 <= x <= 0.25
Systematic Cu-63 NQR studies of the stripe phase in La(1.6-x)Nd(0.4)Sr(x)CuO(4) for 0.07 <= x <= 0.25
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إظهرنا أن تدرج الإشعاع المتكامل لنكوبول الذري النووي Cu-63 في La (1.6-x) Nd (0.4) Sr (x) CuO (4) ينخفض بشكل كبير أسفل درجة حرارة ترتيب الشريط الشحني T (شحنة). المقارنة مع الإشعاع الذري الشعاعي والشعاعي يدل على أن نسبة الإزالة F (T) (أي نسبة الإشعاع المفقود من تدرج الإشعاع المتكامل لإشارة NQR) تمثل معامل ترتيب الشريط الشحني. الدراسة النظامية تكشف عن ترتيب الشريط الشحني الجزئي في المنطقة السوبركوندوكتيفة 0.07 <= x <= 0.25. كأداة للدرجة المنخفضة t = T / T (شحنة)، يكون تدرج تباين F (t) أقصر لتركيز الثقوب x = 1/8، مما يدل على أن x = 1/8 هو التركيز الأمثل لشكل الشريط.
We demonstrate that the integrated intensity of Cu-63 nuclear quadrupole resonance (NQR) in La(1.6-x)Nd(0.4)Sr(x)CuO(4) decreases dramatically below the charge-stripe ordering temperature T(charge). Comparison with neutron and X-ray scattering indicates that the wipeout fraction F(T) (i.e. the missing fraction of the integrated intensity of the NQR signal) represents the charge-stripe order parameter. The systematic study reveals bulk charge-stripe order throughout the superconducting region 0.07 <= x <= 0.25. As a function of the reduced temperature t = T/T(charge), the temperature dependence of F(t) is sharpest for the hole concentration x=1/8, indicating that x=1/8 is the optimum concentration for stripe formation.
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