Effect of nonlinearity, magnetic and nonmagnetic impurities, and spin-orbit scattering on the nonlocal microwave response of a d-wave superconductor

• Дата: 2016
• Автори: Yavari, H., Biderang, M., Kouhfar, M.
• Формат: Стаття
• Мова: English
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2016
• Назва видання: Физика низких температур
• Теми: Свеpхпpоводимость, в том числе высокотемпеpатуpная
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/129334
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Effect of nonlinearity, magnetic and nonmagnetic impurities, and spin-orbit scattering on the nonlocal microwave response of a d-wave superconductor / H. Yavari, M. Biderang, M. Kouhfar // Физика низких температур. — 2016. — Т. 42, № 12. — С. 1397-1405. — Бібліогр.: 41 назв. — англ.

By using linear response theory the low-temperature microwave response of a nonlocal and nonlinear d-wave superconductor with magnetic and nonmagnetic impurities is calculated. We will show that for the local, linear, and pure sample, penetration depth, ∆λ(T), and conductivity, ∆σ1(T), vary linearly with temperature, consequently the resistance, ∆R(T), would change linearly with temperature in agreement with experimental results and for the nonlocal, nonlinear sample the linear temperature dependences ∆R(T) change to quadratic function. For impure samples the nonlocality and nonlinearity effects are completely hidden by impurities and the temperature dependences ∆λ(T) and ∆σ1(T) are determined by temperature interval namely the ranges of T < T* and T* << T << Tc which T* is determined by nonmagnetic impurity concentration and the strength of impurity scattering. For T < T* , ∆R(T) varies as T2, on the other hand for, T* << T << Tc, ∆R(T) varies linearly with temperature. We will also show that the temperature dependence of surface resistance is unaffected by spin-orbit interaction and magnetic impurities.