High-Field Quasiparticle Tunneling in Bi_2Sr_2CaCu_2O_8+delta: Negative Magnetoresistance in the Superconducting State

Details High-Field Quasiparticle Tunneling in Bi_2Sr_2CaCu_2O_8+delta: Negative Magnetoresistance in the Superconducting State High-Field Quasiparticle Tunneling in Bi_2Sr_2CaCu_2O_8+delta: Negative Magnetoresistance in the Superconducting State

1999-12-10

arxiv.org/abs/cond-mat/9912194v1

Physics

Condensed Matter

Superconductivity

4p., 5 fig. (.eps), will be published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.84.1784

We report on the c-axis resistivity rho_c(H) in Bi_2Sr_2CaCu_2O_{8+\delta} that peaks in quasi-static magnetic fields up to 60 T. By suppressing the Josephson part of the two-channel (Cooper pair/quasiparticle) conductivity \sigma_c (H), we find that the negative slope of \rho_c(H) above the peak is due to quasiparticle tunneling conductivity \sigma_q(H) across the CuO_2 layers below H_{c2}. At high fields (a) \sigma_q(H) grows linearly with H, and (b) \rho_c(T) tends to saturate (sigma_c \neq 0) as T->0, consistent with the scattering at the nodes of the d-gap. A superlinear sigma_q(H) marks the normal state above T_c.

Affiliated with

Also associated with

No associations

Rating

High-Field Quasiparticle Tunneling in Bi_2Sr_2CaCu_2O_8+delta: Negative Magnetoresistance in the Superconducting State does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with High-Field Quasiparticle Tunneling in Bi_2Sr_2CaCu_2O_8+delta: Negative Magnetoresistance in the Superconducting State, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-Field Quasiparticle Tunneling in Bi_2Sr_2CaCu_2O_8+delta: Negative Magnetoresistance in the Superconducting State will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-419822