We report the transport and thermodynamic properties under hydrostatic pressure in the antiferromagnetic Kondo compound CeMg2Cu9 with a two-dimensional arrangement of Ce atoms. Magnetic specific heat Cmag(T) shows a Schottky-type anomaly around 30 K originating from the crystal electric field (CEF) splitting of the 4f state with the first excited level at \Delta_{1}/kB = 58 K and the second excited level at \Delta_{2}/kB = 136 K from the ground state. Electric resistivity shows a two-peaks structure due to the Kondo effect on each CEF level around T_{1}^{max} = 3 K and T_{2}^{max} = 40 K. These peaks merge around 1.9 GPa with compression. With increasing pressure, Neel temperature TN initially increases and then change to decrease. TN finally disappears at the quantum critical point Pc = 2.4 GPa.
@article{arxiv.cond-mat/0402017,
title = {Thermodynamic and Transport Properties of CeMg2Cu9 under Pressure},
author = {Masakazu Ito and Koji Asada and Yuko Nakamori and Jyun'ya Hori and Hironobu Fujii and Fumihiko Nakamura and Toshizo Fujita and Takashi Suzuki},
journal= {arXiv preprint arXiv:cond-mat/0402017},
year = {2016}
}