Unscaling Superconducting Parameters with <i>T</i><sub>c</sub> for Bi-2212 and Bi-2223: A Magnetotransport Study in the Superconductive Fluctuation Regime

Adachi, Shintaro; Usui, Tomohiro; Ito, Yasuhito; Kudo, Hironobu; Kushibiki, Haruki; Murata, Kosuke; Watanabe, T.; Kudo, Kazuhiro; Nishizaki, Terukazu; Kobayashi, Norio; Kimura, Shojiro; Fujita, M.; Yamada, K.; Noji, Takashi; Koike, Yasuhiro; Fujii, Toshitsugu

doi:10.7566/jpsj.84.024706

Cited by 10 publications

(5 citation statements)

References 42 publications

(64 reference statements)

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“…The doping level of obtained Bi-2223 is in the slightly under-doped state. [24][25][26][27] Bi-2223 single crystals were characterized by a 2θ/θ scan using X-ray diffraction (XRD) after the θ scan. The magnetic susceptibility was measured for cleaved Bi-2223 single crystal under 10 Oe using the magnetic property measurement system (MPMS, Quantum Design).…”

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confidence: 99%

Pressure effect in Bi-2212 and Bi-2223 cuprate superconductor

Adachi

Matsumoto

Hara

et al. 2019

Appl. Phys. Express

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We report the pressure effect in Bi 2 Sr 2 Ca 2 Cu 3 O 10+δ (Bi-2223) single crystal with a small amount of intergrowth of Bi 2 Sr 2 CaCu 2 O 8+δ (Bi-2212). Their superconducting transition temperatures T c s showed a domelike shape as a function of pressure, which showed a good agreement with the general relation between the carrier concentration and T c . Our experimental results indicate that high pressure can induce effective carrier doping into the multilayered high-T c cuprate superconductor.Several studies reported that the superconducting transition temperature (T c ) of cuprate superconductors can be enhanced by applying pressure. 1-9) The highest T c above 160 K among cuprates has been observed in HgBa 2 Ca 2 Cu 3 O 8+δ (Hg-1223) under 20-30 GPa. [1][2][3] According to recent results investigating the pressure effect up to about 20 GPa in Hg-1223 4) and YBa 2 Cu 4 O 8 (Y-124), 5) T c shows a dome-like shape as a function of applied pressure P, which is similar to the general relationship between the carrier concentration and T c . The pressure dependence of the Hall coefficient in YBa 2 Cu 3 O 7−δ , Y-124, Bi 2 Sr 2 CaCu 2 O 8+δ and Tl 2 Ba 2 CuO 6+δ , also indicates that effective carrier doping can be induced by pressure. 6) The structure of cuprates alternately stacks a superconducting CuO 2 plane and insulating charge reservoir layer (CRL). It is empirically known that the T c of cuprate superconductors enhances with increasing the number of CuO 2 planes (n) per unit cell from 1 to 3 and decreases with further increasing n from 4. [10][11][12][13][14][15][16][17] It should be noted that the number of CRLs does not change even when n increases. The homologous series of the high-T c cuprates are described by two universal composition ratios, M-12(n-1)n or M-22(n-1)n, where M is an element forming the CRL. As the distance between the CRLs and inner CuO 2 planes increases, the doping level of inner CuO 2 planes decreases. 16) The nuclear magnetic resonance measurements in * ADACHI.Shintaro@nims.go.jp arXiv:1810.08981v2 [cond-mat.supr-con]

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confidence: 99%

Pressure effect in Bi-2212 and Bi-2223 cuprate superconductor

Adachi

Matsumoto

Hara

et al. 2019

Appl. Phys. Express

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“…A linear resistivity in the normal state is seen in the y = 0.21 sample, which is typical of optimally doped Bi-2212. 25) The resistivity at room temperature is around 0.3 μΩ cm, this value is typical of optimally doped cuprate high-T c superconductor. [25][26][27] The resistivity curve of y = 0.37 sample begins to show an upper curvature in the normal state (100 K < T < 300 K) which is typically seen in the underdoped cuprate superconductors.…”

Section: Resultsmentioning

confidence: 94%

“…25) The resistivity at room temperature is around 0.3 μΩ cm, this value is typical of optimally doped cuprate high-T c superconductor. [25][26][27] The resistivity curve of y = 0.37 sample begins to show an upper curvature in the normal state (100 K < T < 300 K) which is typically seen in the underdoped cuprate superconductors. A strong upturn of resistivity at low temperature (T < 100 K) begins to appear for y > 0.65 samples, which is interpreted to be an effect of charge localization.…”

Section: Resultsmentioning

confidence: 94%

Growth and characterization of Bi₂Sr₂Ca_1–xY _x Cu₂O_8+δ single-crystal whiskers

Saito

Maruyama

Oda

et al. 2022

Jpn. J. Appl. Phys.

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Substitution of Y for Ca in Bi2Sr2CaCu2O8+δ (Bi-2212) system is known to effectively change the hole carrier density. In this paper, we report the growth and characterization of Y-substituted Bi-2212 whisker crystals. The evaluated Y content in the whiskers increased as we increased the nominal Y-ratio in the Bi-Sr-Ca-Y-Cu-Te precursor. The X-ray diffraction patterns of whiskers aligned on a glass plate only showed (00l) Bragg peaks of Bi-2212 phase, indicating that the grown whiskers are single crystalline. The c-axis lattice parameter showed monotonic decrease with Y-substitution. The resistivity of Y-substituted whiskers showed systematic decrease of superconducting transition temperature and increase of normal resistivity, suggesting that the hole carrier density was controlled via Y-substitution. Based on these results, we propose that Bi-2212 with various carrier concentrations can be easily obtained by growing Y-substituted whiskers. Furthermore, such whiskers with controlled T c might be useful for microelectronic applications such as terahertz oscillator.

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“…In the normal state (80 K < T < 300 K), the resistance showed a metallic and upper-curvature shape coming from the nature of the under-doped cuprate superconductor. [30][31][32][33][34][35][36] It is assumed that such behavior appears universally in cuprates, [30][31][32][33][34][35][36] due to the in-plane scattering rate of the electrons being reduced by the pseudogap opening. [30][31][32][33][34][35] Near the surface of our Y-124 film was the Y-poor composition suggested by EDX analysis, however, the temperature dependence of resistance was a metallic and upper-curvature shape as well as an as-grown RE-124 bulk single crystal.…”

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“…[30][31][32][33][34][35][36] It is assumed that such behavior appears universally in cuprates, [30][31][32][33][34][35][36] due to the in-plane scattering rate of the electrons being reduced by the pseudogap opening. [30][31][32][33][34][35] Near the surface of our Y-124 film was the Y-poor composition suggested by EDX analysis, however, the temperature dependence of resistance was a metallic and upper-curvature shape as well as an as-grown RE-124 bulk single crystal. 35,36) Thus, we considered that the resistance in the normal state originated from the bulk properties of the synthesized Y-124 film.…”

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Fabrication of a superconducting YBa₂Cu₄O₈ film via coprecipitation

Hara¹,

Adachi²,

Matsumoto³

et al. 2019

Jpn. J. Appl. Phys.

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We have successfully synthesized the c-axis oriented YBa 2 Cu 4 O 8 (Y-124) film on a SrTiO 3 (1 0 0) substrate via a coprecipitation and a dip-coating method. The precipitations including Y, Ba and Cu ions were obtained using their metal nitrates solution and the aqueous solution of sodium hydroxide and oxalic acid. Superconducting transition of the synthesized film was observed at 64-70 K corresponding to bulk Y-124 in the magnetization and resistance measurement. The developed method is suitable to synthesize superconducting Y-124 films for technological applications.The cuprate superconductors have two-dimensional superconducting properties such as the anisotropic critical current density. 1-7) This anisotropy is attributed to its structure alternately stacked with superconducting CuO 2 plane and insulating charge reservoir layer. [8][9][10]

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Unscaling Superconducting Parameters with T_c for Bi-2212 and Bi-2223: A Magnetotransport Study in the Superconductive Fluctuation Regime

Cited by 10 publications

References 42 publications

Pressure effect in Bi-2212 and Bi-2223 cuprate superconductor

Pressure effect in Bi-2212 and Bi-2223 cuprate superconductor

Growth and characterization of Bi₂Sr₂Ca_1–xY _x Cu₂O_8+δ single-crystal whiskers

Fabrication of a superconducting YBa₂Cu₄O₈ film via coprecipitation

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Unscaling Superconducting Parameters with Tc for Bi-2212 and Bi-2223: A Magnetotransport Study in the Superconductive Fluctuation Regime

Cited by 10 publications

References 42 publications

Pressure effect in Bi-2212 and Bi-2223 cuprate superconductor

Pressure effect in Bi-2212 and Bi-2223 cuprate superconductor

Growth and characterization of Bi2Sr2Ca1–x Y x Cu2O8+δ single-crystal whiskers

Fabrication of a superconducting YBa2Cu4O8 film via coprecipitation

Contact Info

Product

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Unscaling Superconducting Parameters with T_c for Bi-2212 and Bi-2223: A Magnetotransport Study in the Superconductive Fluctuation Regime

Growth and characterization of Bi₂Sr₂Ca_1–xY _x Cu₂O_8+δ single-crystal whiskers

Fabrication of a superconducting YBa₂Cu₄O₈ film via coprecipitation