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Tunneling Spectroscopy of Slightly Overdoped Pnictides BaFe(1.88)Ni(0.12)As2 in the Superconducting and Normal Stateстатья
- Авторы: Nikitchenkov I.A., Ilina A.D., Mikhailov V.M., Pervakov K.S., Vlasenko V.A., Kuzmichev S.A., Kuzmicheva T.E.
- Журнал: Moscow University Physics Bulletin
- Том: 78
- Номер: 4
- Год издания: 2023
- Издательство: Allerton Press
- Местоположение издательства: New York, N.Y., United States
- Первая страница: 521
- Последняя страница: 526
- DOI: 10.3103/s0027134923040136
- Аннотация: The current study presents the results of tunneling spectroscopy measurements of current-voltage characteristics (CVC) and dynamic conductance spectra dI(V)/dV of SnS tunneling contacts in single crystals of slightly overdoped superconducting ferropnictide of nominal composition BaFe1.88Ni0.12As2 with bulk critical temperature Tc = 18K. Besides the Andreev structure, a strong nonlinearity is observed in the obtained curves both in the superconducting and normal state. The positions and temperature dependences of the observed dI(V)/dV -features unrelated to the superconducting state are determined for the temperature range 4.3−26.4 K. The paper analyzes possible reasons for the emergence of the observed features.
- Добавил в систему: Кузьмичев Светослав Александрович