Effect of pressure on magneto-transport properties in the superconducting and normal phases of the metallic double chain compound Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$

Abstract

To examine the electronic phase diagram of superconducting CuO double chains, we report the effect of external pressure on the magneto-transport properties in superconducting and non-superconducting polycrystalline samples of Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$ at low temperatures (1.8-40 K) under various magnetic fields (up to 14 T). In the as-sintered non-superconducting sample, the magneto-resistance (MR) follows a power law of $H^{3/2}$ at low temperatures, which is in no agreement with the $H^2$ dependence of MR in the PrBa${}_2$Cu${}_4$O${}_8$ system. The negative pressure dependence of the superconducting phase is qualitatively consistent with a theoretical prediction on the basis of the Tomonaga-Luttinger Liquid theory. The 48-h-reduced superconducting sample at ambient pressure exhibits no clear increase in MR for $T>T_{c,on}=26.5$ K. In contrast, with the application of pressure to the superconducting sample, the MR effects reappear and are also well fitted by $H^{3/2}$. The model of slightly warped Fermi surfaces explains not only the MR effect of the non-superconducting sample, but is also related to the reasons for the pressure-induced MR phenomena of the superconducting sample.

arXiv comment8 pages, 8 figures. arXiv admin note: text overlap with arXiv:1512.01300

References in corpus (7)

• Superconductivity in Pr2Ba4Cu7O15-delta with metallic double chains
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• Superconductivity due to spin fluctuations originating from multiple Fermi surfaces in a double chain superconductor Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$}
• Superconductivity in the CuO double chain of Pr_2Ba_4Cu_7O_15-delta on the basis of Tomonaga-Luttinger liquid theory
• Physical properties of a new cuprate superconductor Pr_2Ba_4Cu_7O_{15-δ}
• Electronic States and Superconducting Transition Temperature based on the Tomonaga-Luttinger liquid in Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$
• Thermodynamic Properties of Superconducting and Non-Superconducting Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$ Compounds with Metallic Double Chains

Cited by in corpus (5)

• Synthesis of high-oxidation Y-Ba-Cu-O phases in superoxygenated thin films
• Nonmonotonic Pressure Dependence of the Lattice Parameter $a$ in the Quasi-one-dimensional Superconductor Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$
• Enhanced superconducting properties of double-chain based superconductor Pr${}_2$Ba${}_4$Cu${}_7$O${}_{15-\delta }$ synthesized by citrate pyrolysis technique
• Crystal structures and superconducting properties of metallic double-chain based cuprate Pr2Ba4Cu7O15-delta
• Ground-State Properties of the $t$-$J$ Model for the CuO Double-Chain Structure