Anomalous phase transitions in the heavy fermion compound

Crystal growth, transport, and magnetic properties of Ln3Co4Sn13 (Ln=La, Ce) with a perovskite-like structure

“…The coexistence of magnetism and superconductivity (T c $8 K) has been observed in Yb 3 Rh 4 Sn 13 [13,14], while heavy fermion behavior with two phase transitions is observed in Ce 3 Ir 4 Sn 13 [15][16][17]. Furthermore, the isostructural Ce 3 Pt 4 In 13 , is also a heavy fermion with g$1000 mJ mol À1 K À2 [18].…”

Kondo effect in the quasiskutteruditeYb3Os4Ge13

“…New quantum states of matter such as superconductivity with unconventional non-s-wave pairing often emerge at the border of the magnetic orders. In the heavy fermion compound Ce 3 Ir 4 Sn 13 , strange double peak feature has been observed in the specific heat near the antiferromagnetic ordering temperature [19,20]. In Ce 3 Pt 4 In 13 , pressure experiment has revealed substantial evidences against the conventional Doniach phase diagram [21].…”

Successive Phase Transitions in R3Ir4Sn13 (R: La and Ce) Investigated Using Neutron and X-ray Diffraction

“…Ce 3 Ir 4 Sn 13 shows a weak temperature dependence of electrical resistivity, and a heavy fermion state was suggested from the large electronic specific-heat coefficient γ = 670 mJ/(K 2 mol-Ce) [11,12]. Whereas the early studies reported the primitive cubic crystal structure (the lattice constant a = 9.72 Å) of Ce 3 Ir 4 Sn 13 [13,14], the recent study reports X-ray reflections characterized by the superlattice wave vector q S1 = (1/2, 1/2, 0) even at room temperature [15]. The same q S1 peaks are found in the chiral phases of Ce T 4 Sn 13 (T : Co and Rh) [7,8].…”