Abstract:
The voltage-current characteristics (VCC) of Sm1−xSrxMnO3 samples with x=0.425 and x=0.450 were experimentally studied at a temperature of 77 K in pulsed and constant electric (E) and magnetic (H) fields up to 10 kOe for the H∥E and H⊥E orientations. N-shaped VCCs and high-frequency (up to 3 MHz) current oscillations were observed. It was found that the effect of colossal magnetoresistance had a threshold character and was smoothly reduced to zero with E→0.
Citation:
I. K. Kamilov, K. M. Aliev, Kh. O. Ibragimov, N. S. Abakarova, “N-shaped voltage-current characteristic and current oscillations in Sm1−x SrxMnO3 manganite”, Pis'ma v Zh. Èksper. Teoret. Fiz., 78:8 (2003), 957–959; JETP Letters, 78:8 (2003), 485–487
K. A. Shaykhutdinov, S. V. Semenov, S. I. Popkov, D. A. Balaev, A. A. Bykov, A. A. Dubrovskiy, M. I. Petrov, N. V. Volkov, Journal of Applied Physics, 109:8 (2011)
K. A. Shaikhutdinov, D. A. Balaev, S. I. Popkov, S. V. Semenov, N. V. Sapronova, N. V. Volkov, Phys. Solid State, 53:12 (2011), 2455