The tunneling conductance and tunneling magnetoresistance(TMR)are investigated in ferromagnet/insulator/ferromagnet/insulator/d-wave superconductor(FM/I/FM/I/d-wave SC)structures by applying an extended Blonder-Tinkha...The tunneling conductance and tunneling magnetoresistance(TMR)are investigated in ferromagnet/insulator/ferromagnet/insulator/d-wave superconductor(FM/I/FM/I/d-wave SC)structures by applying an extended Blonder-Tinkham-Klapwijk(BTK)approach.We study the effects of the exchange splitting in the FM, the magnetic impurity scattering in the thin insulator interface of FM/I/FM,and noncollinear magnetizations in adja- cent magnetic layers on the TMR.It is shown(1)that the tunneling conductance and TMR exhibit amplitude-varying oscillating behavior with exchange splitting,(2)that with the presence of spin-flip scattering in insulator interface of FM/I/FM,the TMR can be dramatically enhanced,and(3)that the TMR depends strongly on the angle between the magnetization of two FMs.展开更多
基金The project supported by Natural Science Foundation of the Education Bureau of Jiangsu Province of China under Grant No.01KJB140007the“333”Program of Jiangsu Province of China
文摘The tunneling conductance and tunneling magnetoresistance(TMR)are investigated in ferromagnet/insulator/ferromagnet/insulator/d-wave superconductor(FM/I/FM/I/d-wave SC)structures by applying an extended Blonder-Tinkham-Klapwijk(BTK)approach.We study the effects of the exchange splitting in the FM, the magnetic impurity scattering in the thin insulator interface of FM/I/FM,and noncollinear magnetizations in adja- cent magnetic layers on the TMR.It is shown(1)that the tunneling conductance and TMR exhibit amplitude-varying oscillating behavior with exchange splitting,(2)that with the presence of spin-flip scattering in insulator interface of FM/I/FM,the TMR can be dramatically enhanced,and(3)that the TMR depends strongly on the angle between the magnetization of two FMs.
