Hall Coefficient in the Superconducting and Non-Superconducting Pr2Ba4Cu7O15-δCompounds with Metallic Double Chains

Tada, J.; Matsukawa, Michiaki; Konno, Takahisa; Kobayashi, Satoru; Hagiwara, Makoto; Miyazaki, Tsuyoshi; Sano, Kazuhiro; Ōno, Yoshiaki; Matsushita, A.

doi:10.7566/jpsj.82.105003

Cited by 7 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(Figure 1a) For the 48-h-reduced sample, the R H data exhibit negative values in the limited temperature range between 30 and 100 K, accompanied by electron doping due to the reduced heat treatment in a vacuum. Moreover, we estimate R H ¼ À1:1 Â 10 À3 cm 3 /C at 30 K, which is in good agreement with the published data [33].…”

Section: Hall and Pressure Effects Of Prsupporting

confidence: 92%

“…Furthermore, in Figure 7, we show the temperature dependences of the Hall coefficients R H for the as-sintered non-superconducting and 48-h-reduced superconducting samples of Pr 2 Ba 4 Cu 7 O 15Àδ . For comparison, the R H values of the assintered sample are taken from our previous work [33], which are similar, in magnitude and temperature dependence, to R H of Pr124 with a metallic CuO double-chain block. (Figure 1a) For the 48-h-reduced sample, the R H data exhibit negative values in the limited temperature range between 30 and 100 K, accompanied by electron doping due to the reduced heat treatment in a vacuum.…”

Section: Hall and Pressure Effects Of Prmentioning

confidence: 99%

See 1 more Smart Citation

Functional Materials Synthesis and Physical Properties

Senzaki¹,

Matsukawa²,

Yonai³

et al. 2022

Recent Perspectives in Pyrolysis Research

Self Cite

View full text Add to dashboard Cite

A citrate pyrolysis technique is a unique route to prepare reactive precursor mixtures through an ignition process of concentrated aqueous solution. This procedure enables to synthesize highly homogeneous and fine powders for functional materials. The double-chain based superconductor Pr2Ba4Cu7O15−δ and double perovskite photocatalytic semiconductor Ba2Tb(Bi,Sb)O6 were synthesized by using the citrate pyrolysis technique. For the present sample with a reduction treatment for 72 h, a sharp superconducting transition appeared at an onset temperature Tc,on=26 K accompanied by a zero-resistance state at Tc,zero=22 K. The superconducting volume fraction estimated from the magnetization measurement showed an excellent value of ∼58%. Both reduction treatment in a vacuum and subsequent quenching procedure are needed to realize higher superconductivity due to further oxygen defects. The polycrystalline samples for Ba2Tb(Bi1−x,Sbx)O6 (x=0 and 0.5) were formed in the monoclinic and cubic crystal structures. We conducted the gaseous 2-propanol (IPA) and methylene blue (MB) degradation experiments under a visible light irradiation, to evaluate photocatalytic activities of the powder samples. For the Sb50% substituted sample, the highest performance of MB degradation was observed. The effect of Sb-substitution on the photocatalytic degradation of MB is in direct contrast to that on the IPA decomposition under visible light irradiation. The enhanced photocatalytic properties in the citrate samples are attributed to their morphology, where fine particles are homogeneously distributed with a submicron order.

show abstract

Section: Hall and Pressure Effects Of Prsupporting

confidence: 92%

Section: Hall and Pressure Effects Of Prmentioning

confidence: 99%

Functional Materials Synthesis and Physical Properties

Senzaki¹,

Matsukawa²,

Yonai³

et al. 2022

Recent Perspectives in Pyrolysis Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…We also reported the temperature dependence of the Hall coefficient in superconducting Pr247 with a higher T c,on ∼ 27 K. 13 Our findings indicated that the superconducting transition temperature increased because the density of doped electron carriers became denser under the reduction treatment, consistent with a theoretical prediction.…”

Section: Introductionsupporting

confidence: 83%

Effect of Pressure on Magneto-Transport Properties in the Superconducting and Normal Phases of the Metallic Double Chain Compound Pr₂Ba₄Cu₇O_15−δ

et al. 2016

Self Cite

View full text Add to dashboard Cite

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 nonsuperconducting polycrystalline samples of Pr2Ba4Cu7O 15−δ at low temperatures (1.8-40 K) under various magnetic fields (up to 14 T). In the as-sintered non-superconducting sample, the magnetoresistance (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 PrBa2Cu4O8 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 > Tc,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.

show abstract

“…12 Despite of the resistive drop associated with the superconducting transition, we found that the diamagnetic signal was strongly suppressed as expected in the 1D superconductivity of CuO double chains. We also reported the temperature dependence of the Hall coefficient in superconducting Pr247 with a higher T on c ∼ 27 K. 13 Our findings indicated that the superconducting transition temperature increased because the density of doped electron carriers became denser under the reduction treatment, consistent with a theoretical prediction. 14 In this paper, we demonstrate the thermodynamic properties of the electron-doped metallic double-chain compound Pr 2 Ba 4 Cu 7 O 15−δ , which has a higher T on c (26.5 K), under different magnetic fields.…”

Section: Introductionsupporting

confidence: 76%

Thermodynamic properties of superconducting and non-superconducting Pr2Ba4Cu7O15-δ compounds with metallic double chains

Konno¹,

Matsukawa²,

Sugawara³

et al. 2016

Physica C: Superconductivity and its Applications

Self Cite

View full text Add to dashboard Cite

To examine the thermodynamic properties of Pr2Ba4Cu7O 15−δ compounds with metallic CuO double chains, we measured the specific heats of superconducting and non-superconducting polycrystalline samples at low temperatures (1.8-40 K) under various magnetic fields (up to 9 T). In the as-sintered non-superconducting sample, a λ−like enhancement in the specific heat measurement appeared near the antiferromagnetic transition temperature TN = 17 K. In contrast, the reduced superconducting sample with Tc,on = 26.5 K exhibited no obvious superconducting anomaly in its specific data, but a Schottky-like broad maximum appeared at low temperatures. The Schottky-like anomaly was attributed to low-lying quasi-triplet splitting of Pr 3+ ions under the crystal field effect.

show abstract

Hall Coefficient in the Superconducting and Non-Superconducting Pr₂Ba₄Cu₇O_15-δCompounds with Metallic Double Chains

Cited by 7 publications

References 8 publications

Functional Materials Synthesis and Physical Properties

Functional Materials Synthesis and Physical Properties

Effect of Pressure on Magneto-Transport Properties in the Superconducting and Normal Phases of the Metallic Double Chain Compound Pr₂Ba₄Cu₇O_15−δ

Thermodynamic properties of superconducting and non-superconducting Pr2Ba4Cu7O15-δ compounds with metallic double chains

Contact Info

Product

Resources

About

Hall Coefficient in the Superconducting and Non-Superconducting Pr2Ba4Cu7O15-δCompounds with Metallic Double Chains

Cited by 7 publications

References 8 publications

Functional Materials Synthesis and Physical Properties

Functional Materials Synthesis and Physical Properties

Effect of Pressure on Magneto-Transport Properties in the Superconducting and Normal Phases of the Metallic Double Chain Compound Pr2Ba4Cu7O15−δ

Thermodynamic properties of superconducting and non-superconducting Pr2Ba4Cu7O15-δ compounds with metallic double chains

Contact Info

Product

Resources

About

Hall Coefficient in the Superconducting and Non-Superconducting Pr₂Ba₄Cu₇O_15-δCompounds with Metallic Double Chains

Effect of Pressure on Magneto-Transport Properties in the Superconducting and Normal Phases of the Metallic Double Chain Compound Pr₂Ba₄Cu₇O_15−δ