NQR studies of CePd2InCePd2In under hydrostatic pressure

We present the results of 115In-NQR measurements of CePd2InCePd2In under hydrostatic pressure up to 14.6 kbar. At zero external pressure this compound exhibits antiferromagnetic order below TN=1.2K, involving the alignment of very small Ce moments. This unusual ground state is believed to be the result of a competition between Kondo screening and RKKY interaction involving the conduction electrons and the localised 4f-electrons of the Ce3+Ce3+ ions. From our NQR spectra, we observe a pressure-induced increase of TNTN between ambient pressure and 14.6 kbar, such that ΔTN/Δp≈+16.5mKkbar-1.