Author(s): O. Breunig, M. Garst, E. Sela, B. Buldmann, P. Becker, L. Bohatý, R. Müller, and T. Lorenz Comparing high-resolution specific heat and thermal expansion measurements to exact finite-size diagonalization, we demonstrate that Cs 2 CoCl 4 for a magnetic field along the crystallographic b axis realizes the spin-1/2 X X Z chain in a transverse field. Exploiting both thermal as well as virtual excit... [Phys. Rev. Lett. 111, 187202] Published Tue Oct 29, 2013
Condensed Matter: Electronic Properties, etc.