Continuous control of classical-quantum crossover by external high pressure in the coupled chain compound CsCuCl₃.

ABSTRACT: In solid materials, the parameters relevant to quantum effects, such as the spin quantum number, are basically determined and fixed at the chemical synthesis, which makes it challenging to control the amount of quantum correlations. We propose and demonstrate a method for active control of the classical-quantum crossover in magnetic insulators by applying external pressure. As a concrete example, we perform high-field, high-pressure measurements on CsCuCl₃, which has the structure of weakly-coupled spin chains. The magnetization process experiences a continuous evolution from the semi-classical realm to the highly-quantum regime with increasing pressure. Based on the idea of "squashing" the spin chains onto a plane, we characterize the change in the quantum correlations by the c

SUBMITTER: Yamamoto D 

PROVIDER: S-EPMC8275658 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature