Bose glass behavior in (Yb$_{1-x}$Lu$_x$)$_4$As$_3$ representing the randomly diluted quantum spin-1/2 chains

G. Kamieniarz; R. Matysiak; P. Gegenwart; A. Ochiai; F. Steglich

doi:10.1103/PhysRevB.94.100403

paper

Bose glass behavior in (Yb $_{1 - x}$ Lu $_{x}$ ) $_{4}$ As $_{3}$ representing the randomly diluted quantum spin-1/2 chains

arXiv:1609.06472 · doi:10.1103/PhysRevB.94.100403

Abstract

The site-diluted compound (Yb $_{1 - x}$ Lu $_{x}$ ) $_{4}$ As $_{3}$ is a scarce realization of the linear Heisenberg antiferromagnet partitioned into finite-size segments and is an ideal model compound for studying field-dependent effects of quenched disorder in the one-dimensional antiferromagnets. It differentiates from the systems studied so far in two aspects - the type of randomness and the nature of the energy gap in the pure sample. We have measured the specific heat of single-crystal (Yb $_{1 - x}$ Lu $_{x}$ ) $_{4}$ As $_{3}$ in magnetic fields up to 19.5 T. The contribution $C_{⊥}$ arising from the magnetic subsystem in an applied magnetic field perpendicular to the chains is determined. Compared to pure Yb $_{4}$ As $_{3}$ , for which $C_{⊥}$ indicates a gap opening, for diluted systems a non-exponential decay is found at low temperatures which is consistent with the thermodynamic scaling of the specific heat established for a Bose-glass phase.

arXiv comment8 pages, 17 figures, including supplemental material, accepted for PRB rapid communication

Bose glass behavior in (Yb $_{1 - x}$ Lu $_{x}$ ) $_{4}$ As $_{3}$ representing the randomly diluted quantum spin-1/2 chains

Abstract

References in corpus (16)

Cited by in corpus (3)

Bose glass behavior in (Yb1−x​Lux​)4​As3​ representing the randomly diluted quantum spin-1/2 chains

Abstract

References in corpus (16)

Cited by in corpus (3)

Bose glass behavior in (Yb $_{1 - x}$ Lu $_{x}$ ) $_{4}$ As $_{3}$ representing the randomly diluted quantum spin-1/2 chains