Incommensurate two-dimensional checkerboard charge density wave in the low-dimensional superconductor Ta4Pd3Te16
2020
We report the observation of a two-dimensional (2D) checkerboard charge density wave (CDW) in the low-dimensional superconductor
Ta
4
Pd
3
Te
16
. By determining its CDW properties across the temperature-pressure (
T
−
P
) phase diagram and comparing with prototypical CDW materials, we conclude that
Ta
4
Pd
3
Te
16
features (a) an incommensurate CDW with a mixed character of dimensions [quasi-1D (Q1D) considering its needlelike shape along the
b
axis, Q2D as the CDW has checkerboard wave vectors, and 3D because of CDW projections along all three axes], and (b) one of the weakest CDWs compared to its superconductivity (SC), i.e., enhanced SC with respect to CDW, suggesting an interesting interplay of the two orders.
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