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- W2013271331 abstract "The spin liquid state in the hole-doped two-leg ladder system $({mathrm{Sr}}_{2.5}{mathrm{Ca}}_{11.5}){mathrm{Cu}}_{24}mathrm{O}{}_{41}$, which exhibits unique superconductivity under high pressure, has been studied by neutron inelastic scattering at ambient pressure. The spin gap energy for the ladder is found to be $32.1ifmmodepmelsetextpmfi{}0.3mathrm{meV}$, which is still almost the same as that of the parent material ${mathrm{Sr}}_{14}{mathrm{Cu}}_{24}{mathrm{O}}_{41}$. From the observed dispersion relation, the exchange coupling is roughly estimated at ${J}_{ensuremath{parallel}}ensuremath{sim}90ifmmodepmelsetextpmfi{}15mathrm{meV}$ (along the ladders) and ${J}_{ensuremath{perp}}ensuremath{sim}65ifmmodepmelsetextpmfi{}10mathrm{meV}$ (along the rungs). The coupling constant ${J}_{ensuremath{parallel}}$ is slightly decreased from that obtained for the parent compound." @default.
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- W2013271331 date "1999-01-18" @default.
- W2013271331 modified "2023-09-30" @default.
- W2013271331 title "Spin Gap in the Hole-Doped Spin Ladder System<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mo>(</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi>Sr</mml:mi></mml:mrow><mml:mrow><mml:mn>2.5</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>Ca</mml:mi></mml:mrow><mml:mrow><mml:mn>11.5</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mo>)</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi>Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>24</mml:mn></mml:…" @default.
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- W2013271331 doi "https://doi.org/10.1103/physrevlett.82.636" @default.
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