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arXiv · 1701.09124

Point-contact spectroscopy of the high-temperature superconductor BiSrCaCuO

L. F. Rybal'chenko·V. V. Fisun·N. L. Bobrov·M. B. Kosmyna·A. I. Moshkov·V. P. Seminozhenko·I. K. Yanson
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Abstract

The maximum value of the energy gap $\Delta\simeq 8\ meV$ and the ratio $2\delta/kT_c\simeq~2.5$ are determined for a high-temperature superconductor $\rm Bi_2Sr_2CaCu_2O_{8+y}$ by using point contacts. It was found that the high-temperature superconductor is transformed under the effect of current injection of quasiparticles to a new modified state with a reduced gap, which is stable in a wide range of injection intensity.

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L. F. Rybal'chenko, V. V. Fisun, N. L. Bobrov, M. B. Kosmyna, A. I. Moshkov, V. P. Seminozhenko, I. K. Yanson. 2017-01-31. Point-contact spectroscopy of the high-temperature superconductor BiSrCaCuO. https://arxiv.org/abs/1701.09124

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