Novel phase diagram for antiferromagnetism and superconductivity in pressure-induced heavy-fermion superconductor Ce${}_2$RhIn${}_8$ probed by In-NQR

Abstract

We present a novel phase diagram for the antiferromagnetism and superconductivity in Ce${}_2$RhIn${}_8$ probed by In-NQR studies under pressure ($P$). The quasi-2D character of antiferromagnetic spin fluctuations in the paramagnetic state at $P$ = 0 evolves into a 3D character because of the suppression of antiferromagnetic order for $P>P_{\mathrm{QCP}}\sim$ 1.36 GPa (QCP: antiferromagnetic quantum critical point). Nuclear-spin-lattice-relaxation rate $1/T_1$ measurements revealed that the superconducting order occurs in the $P$ range 1.36 -- 1.84 GPa, with maximum $T_c\sim$ 0.9 K around $P_{\mathrm{QCP}}\sim$ 1.36 GPa.

arXiv comment5 pages, 5 figures, submitted to PRB

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Cited by in corpus (1)

• Anomalous magnetotransport in the heavy-fermion superconductor Ce2PdIn8