Suppression of the Charge-Density-Wave State in Sr$_{10}$Ca$_{4}$Cu$_{24}$O$_{41}$ by External Pressure

C. A. Kuntscher; A. Huber; M. Hücker

doi:10.1103/PhysRevB.89.134510

paper

Suppression of the Charge-Density-Wave State in Sr $_{10}$ Ca $_{4}$ Cu $_{24}$ O $_{41}$ by External Pressure

arXiv:1403.5063 · doi:10.1103/PhysRevB.89.134510

Abstract

The influence of external pressure on the charge-density-wave (CDW) ground state of the quasi-one-dimensional two-leg ladder compound Sr $_{10}$ Ca $_{4}$ Cu $_{24}$ O $_{41}$ has been studied by optical reflectivity measurements as a function of temperature (10 - 300~K) and pressure $P$ (0.3 - 4.3~GPa) over the spectral range 580 - 6000 cm $^{1}$ . With increasing pressure the CDW transition temperature $T_{C D W}$ decreases with the linear pressure coefficient $\approx$ -70~K/GPa, and above $\approx$ 3~GPa the CDW phase is suppressed at all temperatures. This behavior is similar to that in compounds Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$ with increasing Ca content $x$ at ambient pressure, with the simple scaling $x \approx 3 \cdot P (GP a)$ . The size of the CDW gap decreases with increasing pressure, whereas the dimensionality of the high-temperature insulating phase in Sr $_{10}$ Ca $_{4}$ Cu $_{24}$ O $_{41}$ within the ladder plane is hardly affected by external pressure.

accepted for publication in Phys. Rev. B

Suppression of the Charge-Density-Wave State in Sr $_{10}$ Ca $_{4}$ Cu $_{24}$ O $_{41}$ by External Pressure

Abstract

References in corpus (2)

Cited by in corpus (2)

Suppression of the Charge-Density-Wave State in Sr10​Ca4​Cu24​O41​ by External Pressure

Abstract

References in corpus (2)

Cited by in corpus (2)

Suppression of the Charge-Density-Wave State in Sr $_{10}$ Ca $_{4}$ Cu $_{24}$ O $_{41}$ by External Pressure