Synchrotron X-ray Diffraction and High-Pressure Electrical Resistivity Studies for High-Tc Candidate Nd3.5Sm0.5Ni3O8

Uehara, M.; Kobayashi, K.; Yamamoto, Hiroki; Nakata, Akitoshi; Wakiya, Kazuhei; Gouchi, Jun; Uwatoko, Yoshiya

doi:10.7566/jpsj.86.114605

Cited by 7 publications

(4 citation statements)

References 27 publications

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“…As the Pr content (z) increases, the a-and c-axis lengths increase almost linearly, demonstrating that Pr substitution for R sites is successful. [18,20]. Thus, it is suggested that with the increase of the ionic radius of R, more additional oxygen is removed to improve electrical conductivity, consistent with the results of high-T c cuprates T'-R 2 CuO 4 [22].…”

Section: Introductionsupporting

confidence: 73%

“…Magnetization measurements were performed using a Cryogenic Ltd. S700X SQUID magnetometer. In our previous synchrotron X-ray diffraction study [20], it has been suggested that by S-deintercalation, the additional apical oxygen is removed. The samples are almost single phases for all compositions, although they contain small amount of impurities produced during the Sulfur-deintercalation process.…”

Section: Introductionmentioning

confidence: 96%

“…Recently, we found that Nd 3.5 Sm 0.5 Ni 3 O 8 exhibits metallic behavior down to around 20 -40 K after intercalation and subsequent deintercalation treatment with sulfur (called as S-treatment hereafter) [18,19]. The synchrotron X-ray diffraction study suggests that the appearance of metallic behavior upon S-treatment is associated with the removal of additional apical oxygen [20], like the situation of T'-type high-T c cuprates. It is known that the T'-type structure tends to incorporate additional oxygen atoms into the apical site in fluorite-type block layers and this is a strong obstacle to superconductivity [21].…”

Section: Introductionmentioning

confidence: 99%

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Chemical Substitution Effect of High-T_c Superconductor Candidate R₄Ni₃O₈ (R: Rare-earth)

Miyatake

Shibutani

Hamada

et al. 2020

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)

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R 4 Ni 3 O 8 (R: rare-earth) is a candidate for high-T c superconductor because its crystal structure and electronic state are very similar to high-T c cuprates. Our recent works have pointed out that, by intercalation-deintercalation treatment with sulfur, the additional oxygen which impedes the metallic conduction is removed and the metallic behavior shows up in Nd 3.5 Sm 0.5 Ni 3 O 8. However, the semiconducting tendency remains below about 20-40 K, suggesting that the removal of additional oxygen is not complete. In this study, Pr-doping to Nd site in Nd 4 Ni 3 O 8 was performed in order to completely remove additional oxygen. By Pr-substitution, the electrical resistivity decreases and maintains metallic behavior down to low temperature (2 K). Next, we performed carrier tuning by chemical substitution to Ni sites in order to bring the electronic states of Ni closer to that of Cu in high-T c cuprates. Although the resistivity increases by doping, metallic behavior is maintained, suggesting that the dopants might occupy the specific Ni sites. However, superconductivity is not observed down to 2 K.

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Section: Introductionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Chemical Substitution Effect of High-T_c Superconductor Candidate R₄Ni₃O₈ (R: Rare-earth)

Miyatake

Shibutani

Hamada

et al. 2020

Proceedings of the International Conference on Strongly Correlated Electron Systems (SCES2019)

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“…Although not superconducting, the n = 3 member of R n +1 Ni n O 2 n +2 , trilayer R 4 Ni 3 O 8 (R = La, Pr, Nd, and Sm), − which possesses an average Ni valence of 1.33+ ( d 8.67 ), crystallizes in the tetragonal I 4/ mmm space group and features stacking of RO 2 fluorite layers and triple infinite NiO 2 square-planar layers (Figure a). In a series of studies, − we have shown that bulk crystals of R 4 Ni 3 O 8 possess many of the “ingredients” thought important to cuprate superconductivity and may only suffer from lying nominally in the overdoped regime of the high T c electronic phase diagram.…”

Section: Introductionmentioning

confidence: 99%

Competing Charge/Spin-Stripe and Correlated Metal Phases in Trilayer Nickelates (Pr_1–xLa_x)₄Ni₃O₈

et al. 2022

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Low valent nickelates R n+1 Ni n O 2n+2 (R = rare earth) containing Ni 1+ (d 9 ) with a quasi-two-dimensional (quasi-2D) square-planar coordination geometry possess structural and electronic properties that are similar to those of high T c cuprates, including superconductivity itself in the doped infinite-layer (n = ∞) RNiO 2 system. Within this R n+1 Ni n O 2n+2 nickelate family, the crystallographic isomorphs Pr 4 Ni 3 O 8 and La 4 Ni 3 O 8 exhibit singularly different ground states: Pr 4 Ni 3 O 8 is metallic, and La 4 Ni 3 O 8 is a charge-and spin-stripe-ordered insulator. To explore and understand the ground state evolution from metallic Pr 4 Ni 3 O 8 to stripeordered La 4 Ni 3 O 8 in the R 4 Ni 3 O 8 family, we have grown a series of isovalent, substituted single crystals (Pr 1−x La x ) 4 Ni 3 O 8 .Combining thermodynamic, transport, magnetic, and synchrotron X-ray single crystal diffraction measurements, we reveal a T = 0 transition between metallic and stripe-insulator phase regions, with this putative quantum phase transition at x ≈ 0.45. We propose two possible models for (Pr 1−x La x ) 4 Ni 3 O 8 : an electronically inhomogeneous system that could serve as a candidate for exploring quantum Griffiths phase physics or a homogeneous system with a clean quantum critical point at the phase boundary.

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X-ray Absorption Spectroscopic Study of Layered Nickelates Pr₄Ni₃₋_xCo_xO₈ for High-T_c Superconductor Candidate

Miyatake

Wako

Tsukamoto

et al. 2023

Proceedings of the 29th International Conference on Low Temperature Physics (LT29)

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Synchrotron X-ray Diffraction and High-Pressure Electrical Resistivity Studies for High-T_c Candidate Nd_3.5Sm_0.5Ni₃O₈

Cited by 7 publications

References 27 publications

Chemical Substitution Effect of High-T_c Superconductor Candidate R₄Ni₃O₈ (R: Rare-earth)

Chemical Substitution Effect of High-T_c Superconductor Candidate R₄Ni₃O₈ (R: Rare-earth)

Competing Charge/Spin-Stripe and Correlated Metal Phases in Trilayer Nickelates (Pr_1–xLa_x)₄Ni₃O₈

X-ray Absorption Spectroscopic Study of Layered Nickelates Pr₄Ni₃₋_xCo_xO₈ for High-T_c Superconductor Candidate

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Synchrotron X-ray Diffraction and High-Pressure Electrical Resistivity Studies for High-Tc Candidate Nd3.5Sm0.5Ni3O8

Cited by 7 publications

References 27 publications

Chemical Substitution Effect of High-Tc Superconductor Candidate R4Ni3O8 (R: Rare-earth)

Chemical Substitution Effect of High-Tc Superconductor Candidate R4Ni3O8 (R: Rare-earth)

Competing Charge/Spin-Stripe and Correlated Metal Phases in Trilayer Nickelates (Pr1–xLax)4Ni3O8

X-ray Absorption Spectroscopic Study of Layered Nickelates Pr4Ni3−xCoxO8 for High-Tc Superconductor Candidate

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Synchrotron X-ray Diffraction and High-Pressure Electrical Resistivity Studies for High-T_c Candidate Nd_3.5Sm_0.5Ni₃O₈

Chemical Substitution Effect of High-T_c Superconductor Candidate R₄Ni₃O₈ (R: Rare-earth)

Chemical Substitution Effect of High-T_c Superconductor Candidate R₄Ni₃O₈ (R: Rare-earth)

Competing Charge/Spin-Stripe and Correlated Metal Phases in Trilayer Nickelates (Pr_1–xLa_x)₄Ni₃O₈

X-ray Absorption Spectroscopic Study of Layered Nickelates Pr₄Ni₃₋_xCo_xO₈ for High-T_c Superconductor Candidate