Correlation between the Hall Resistance and Magnetoresistance in the Mixed State of an Nd2 − xCexCuO4 + δ Electronic Superconductor
- Authors: Charikova T.B.1,2, Shelushinina N.G.1, Petukhov D.S.1, Kharus G.I.1, Petukhova O.E.1, Ivanov A.A.3
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Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch
- Ural Federal University
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
- Issue: Vol 118, No 12 (2017)
- Pages: 1184-1191
- Section: Electrical and Magnetic Properties
- URL: https://journals.rcsi.science/0031-918X/article/view/166894
- DOI: https://doi.org/10.1134/S0031918X17120031
- ID: 166894
Cite item
Abstract
The Hall resistance and the magnetoresistance in the mixed state of the Nd2 − xCexCuO4 + δ quasi-two-dimensional system near the antiferromagnetic-superconductor (AF-SC) phase transition have been measured at doping levels x = 0.14 and 0.15, and a correlation has been established. This correlation can be analyzed using the following power relationship: ρxy(B) ~ [ρxx (B)]β. It was found that index β varied from 0.94 ± 0.03 in the region of AF and SC coexistence (x = 0.14) to 0.6 ± 0.1 in the SC region with the maximum critical temperature (x = 0.15) at low temperatures and weak magnetic fields. This reduction suggests that the symmetry of carrier pairing changes at the boundary of the transition from the phase of antiferromagnetic ordering and spin density waves to the superconducting phase in the presence of antiferromagnetic spin fluctuations.
About the authors
T. B. Charikova
Mikheev Institute of Metal Physics, Ural Branch; Ural Federal University
Author for correspondence.
Email: charikova@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620137; ul. Mira 19, Ekaterinburg, 620002
N. G. Shelushinina
Mikheev Institute of Metal Physics, Ural Branch
Email: charikova@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620137
D. S. Petukhov
Mikheev Institute of Metal Physics, Ural Branch
Email: charikova@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620137
G. I. Kharus
Mikheev Institute of Metal Physics, Ural Branch
Email: charikova@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620137
O. E. Petukhova
Mikheev Institute of Metal Physics, Ural Branch
Email: charikova@imp.uran.ru
Russian Federation, ul. S. Kovalevskoi 18, Ekaterinburg, 620137
A. A. Ivanov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Email: charikova@imp.uran.ru
Russian Federation, Kashirskoe sh. 31, Moscow, 115409