Anisotropy of the Kondo insulator CeRu₄Sn₆

Anisotropic Thermopower of the Kondo Insulator $$\hbox {CeRu}_4\hbox {Sn}_6$$ CeRu 4 Sn 6

“…In the intermediate temperature region 120 K < T < 300 K the in-plane direction aðc 0 Þ has a plateau of approximately 6:5ð8Þ l W/cm K 2 : These values are comparable with, e.g., those for the type-I clathrates (Ce,Ba) 8 …”

Crystal Growth and Stoichiometry of Strongly Correlated Intermetallic Cerium Compounds

“…Since the same field applied along c leads to a much weaker increase of c p we believe that no or a much less field sensitive gap is present along c [Paschen et al (2010)]. …”

“…Two samples (sc1andsc2) show very similar behavior and must thus be c'-oriented while sc3 shows distinctly different behavior and is thus identified as the c-oriented sample. Paschen et al (2010).…”

“…The crystal growth and stoichiometry of CeRu 4 Sn 6 and CeAuGe are reported for the first time. The physical properties of the CeRu 4 Sn 6 single crystals were published partially in an author's earlier paper [Paschen et al (2010)]. …”

Determining the local low-energy excitations in the Kondo semimetalCeRu4Sn6using resonant inelastic x-ray scattering

“…[2][3][4][5][6] CeRu 4 Sn 6 is a tetragonal, non-centrosymmetric (I42m) 7 compound. Its electrical resistivity increases as temperature decreases which has been attributed to the opening of a hybridization gap of the order of 100 K. [8][9][10][11][12] The absence of magnetic order down to 50 mK 13 and the non-integer valence of 3.08 14,15 confirm the importance of strong cfhybridization. Recently, band structure calculations in the LDA+Gutzwiller scheme have suggested that CeRu 4 Sn 6 is a correlated Weyl semimetal, 16 a conjecture that remains to be tested experimentally, especially since the non-centrosymmetric crystal structure complicates the prediction for gap openings after a band inversion.…”