Longitudinal Magnetoresistance in YBa${}_2$Cu${}_3$O${}_7$ at High Magnetic Fields of up to 100 T

Abstract

The investigation of transport characteristics in high-temperature superconductors under magnetic fields is one of the most important topics in condensed matter physics and transport applications. For YBa${}_2$Cu${}_3$O${}_7$ (YBCO), the measurements of magnetoresistance under a high magnetic field are technically challenging because the required magnetic field ($B$) to suppress the superconductivity is 100~T class. The low temperature (from 52 to 150 K) longitudinal magnetoresistance ($B$$\parallel$ab-plane$\parallel$$J$, where $J$ is an electrical current) was measured up to 103~T in optimally doped YBCO thin films. A radio frequency reflection method and the single-turn coil technique were employed. The electrical resistivity ${\rho }_{ab}$ exhibited a non-saturating magnetoresistance behavior until the highest field region, with the slope $\beta (=d\rho /dB)$ showing a pronounced deviation compared to the transverse magnetoresistance ($B$$\parallel$c-axis) case. These findings suggest a potential contribution due to the non-orbital origin in the high field phase of YBCO, because the quasiparticle orbital motion is expected to be absent in the longitudinal magnetoresistance.

arXiv comment8 pages, 4 figures

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Cited by in corpus (1)

• First observation of quantum oscillations by transport measurements in semi-destructive pulsed magnetic fields up to 125 T