کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1818651 | 1026033 | 2009 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of external magnetic field on superconducting and spin density wave gaps of high-Tc superconductors Effect of external magnetic field on superconducting and spin density wave gaps of high-Tc superconductors](/preview/png/1818651.png)
A theoretical model is addressed here to study the interplay of the superconductivity (SC) and the spin density wave (SDW) long range orders in underdoped region in the vicinity of on-set of superconductivity in presence of an external magnetic field. The order parameters are calculated by using Zubarev’s technique of Green’s functions and determined numerically self-consistently. The gap parameters are found to be strongly coupled to each other through their coupling constants. The interplay displays BCS type two gaps in the quasi-particle density of states (DOS) which resemble the tunneling conductance of STM experiments. The gap edges in the DOS appear at ±(z+z1)±(z+z1) and ±(z-z1)±(z-z1). The applied magnetic field further induces Zeeman splitting which is explained on the basis of spin-filter effect of tunneling experiment.
Journal: Physica C: Superconductivity - Volume 469, Issue 13, 1 July 2009, Pages 721–727