Observation of antiferromagnetic and superconducting phases in polycrystalline Ce3PtIn11

Determination of the magnetic q vectors in the heavy fermion superconductor Ce3PtIn11

“…A polycrystalline sample of Ce 3 PtIn 11 was obtained using the two-stage arc melting method as described in detail in Ref. [33]. The sample was ground to powder to enhance the NQR intensity and reduce the heat generation.…”

“…The sample is enclosed in a handmade paper capsule of 3 mm in diameter and 11 mm in height, and placed inside the coil 3.5 mm in diameter and 5 mm in height. The temperature was controlled using a 4 He cryostat in the temperature range of 1.4 < T < 4.2 K, where the successive magnetic transitions were observed [33]. The 115 In-NQR (I = 9 2 ) spectrum in the paramagnetic state is expected to mainly consist of four lines contributed by each of the four inequivalent In sites.…”

“…Here we set A 4 2 = A 3 1 to eliminate one extra degree of freedom because the distance between the Ce(2) and In(4) sites is similar to that between the Ce(1) and In(3) sites (d Ce(2)−In(4) /d Ce(1)−In(3) 1.0300) [33].…”

Determination of the magnetic structures in the heavy fermion superconductor Ce3PtIn11

“…In regards of quantum criticality and quantum phase transition in rare earth based strongly correlated systems, Ce n M m In 3n+2m (M = Co, Rh, Pd, Ir, Pt) systems are quite promising because of the interplay between heavy-fermion superconductivity and magnetism in close proximity with quantum critical point [1,2,3,4,5,6,7,8] . Ce 3 PtIn 11 (n = 3, m = 1, M = Pt) is a relatively new member of the Ce n M m In 3n+2m family [9] . Figure 1 shows the tetragonal crystal structure of Ce 3 PtIn 11 , which consists of periodically stacked two layers of CeIn 3 and one layer of CePtIn 5 .…”