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<p>Superconductivity in La<sub>4</sub>Ni<sub>3</sub>O<sub>10</sub> has been reported to emerge upon suppression of intertwined spin and charge density wave (SDW/CDW) order, suggesting a possible connection to the pairing mechanism. Here we report a systematic investigation of La<sub>4</sub> Ni<sub>3−x</sub>Cu<sub>x</sub> O<sub>10+δ</sub> (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(0\le x\le 0.7\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>0</mn> <mo>≤</mo> <mi>x</mi> <mo>≤</mo> <mn>0.7</mn> </mrow> </math></EquationSource> </InlineEquation>), focusing on the evolution of the SDW/CDW order as a function of chemical substitution. Temperature-dependent resistivity, magnetic susceptibility, and Hall effect measurements reveal a linear suppression of density wave transition temperature <i>T</i><sub>dw</sub> and a concurrent enhancement of hole concentration with increasing Cu content. At higher substitution levels (<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(x &gt; 0.15\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mi>x</mi> <mo>&gt;</mo> <mn>0.15</mn> </mrow> </math></EquationSource> </InlineEquation>), the transition induced anomaly in the resistivity becomes undetectable while a magnetic signature persists, indicating a partial decoupling of spin and charge components and the possible survival of short-range spin correlations. The absence of superconductivity across the substitution series highlights the importance of additional factors in stabilizing the superconducting state in pressurized La<sub>4</sub>Ni<sub>3</sub>O<sub>10</sub>.</p>

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Suppression of intertwined density waves in La4Ni3-xCuxO10+δ

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月26日

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  • Stephen Zhang,
  • Danrui Ni,
  • Ruyi Ke,
  • Guangming Cheng,
  • Nan Yao,
  • Robert J. Cava

摘要

Superconductivity in La4Ni3O10 has been reported to emerge upon suppression of intertwined spin and charge density wave (SDW/CDW) order, suggesting a possible connection to the pairing mechanism. Here we report a systematic investigation of La4 Ni3−xCux O10+δ ( \(0\le x\le 0.7\) 0 ≤ x ≤ 0.7 ), focusing on the evolution of the SDW/CDW order as a function of chemical substitution. Temperature-dependent resistivity, magnetic susceptibility, and Hall effect measurements reveal a linear suppression of density wave transition temperature Tdw and a concurrent enhancement of hole concentration with increasing Cu content. At higher substitution levels ( \(x > 0.15\) x > 0.15 ), the transition induced anomaly in the resistivity becomes undetectable while a magnetic signature persists, indicating a partial decoupling of spin and charge components and the possible survival of short-range spin correlations. The absence of superconductivity across the substitution series highlights the importance of additional factors in stabilizing the superconducting state in pressurized La4Ni3O10.