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DOE OSTI · 2403082

Anomalous Superfluid Density in a Disordered Charge-Density-Wave Material: Pd-Intercalated ErTe 3

Iguchi, Yusuke·Straquadine, Joshua A.·Murthy, Chaitanya·Kivelson, Steven A.·Singh, Anisha G.·Fisher, Ian R.·Moler, Kathryn A.
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Abstract

We image local superfluid density in single crystals of Pd-intercalated ErTe 3 below the superconducting critical temperature T c , well below the onset temperature T CDW of (disordered) charge-density-wave order. We find no detectable inhomogeneities on micron scales. Furthermore, we observe a rapid increase of the superfluid density below T c , deviating from the behavior expected in a conventional Bardeen-Cooper-Schrieffer superconductor, and show that the temperature dependence is qualitatively consistent with a combination of quantum and thermal phase fluctuations.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYBCS theoryLondon theoryMeissner effectPenetration depthQuantum phase fluctuationsQuasi-2D superconductorsScanning probe microscopySuperconducting fluctuationsSuperfluid density

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Iguchi, Yusuke, Straquadine, Joshua A., Murthy, Chaitanya, Kivelson, Steven A., Singh, Anisha G., Fisher, Ian R., Moler, Kathryn A.. 2024-07-15. Anomalous Superfluid Density in a Disordered Charge-Density-Wave Material: Pd-Intercalated ErTe 3. https://doi.org/10.1103/physrevlett.133.036001

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