Field-Induced Magnetic Ordering in the Quantum Spin System KCuCl${}_3$

A. Oosawa, T. Takamasu, K. Tatani +6

KCuCl${}_3$ is a three-dimensional coupled spin-dimer system and has a singlet ground state with an excitation gap $\Delta /k_{\mathrm{B}}=31$ K. High-field magnetization measurements for KCuCl…