Superconductivity in single-crystal

Abstract

We measure the superconducting transition of YIn3 by resistivity, susceptibility, and specific heat. Despite using high-quality single-crystal samples, the transitions detected by the three techniques are shifted from each other in temperature, suggesting a region of filamentary superconductivity. We discuss the possible implications for filamentary superconductivity in unconventional superconductors.

Mechanical properties and variation in SOC going from La to Nd in intermetallic RIn3 and RSn3 (R = La, Ce, Pr, Nd)

“…The superconducting transition temperatures (T C ) for LaIn 3 , LaSn 3 and CeIn 3 are 0.71 K, 6.5 K, and 0.2 K, respectively. 20,21 Moreover, CeIn 3 and PrSn 3 are heavy fermion compounds. 22,23 Due to both the localized and itinerant character of the f electrons, CeIn 3 is also described as mixed valence or intermediate valence 24 and CeSn 3 is categorized as a Kondo compound with valence uctuation.…”

Fermi surface properties of AB3(A = Y, La; B = Pb, In, Tl) intermetallic compounds under pressure

“…Canepa et al [5] explained the anomalous behaviour of the heat capacity at constant volume (C v ) for LaPb 3 with temperature in terms of the presence of anharmonic lattice vibrations. Recently the superconducting transition temperature (T c ) of LaIn 3 has been reported to be 1.08 K, 0.95 K and 0.9 K from resistivity, susceptibility and heat capacity measurements, respectively [6]. To understand and explore the different properties of AB 3 intermetallic compounds, we have examined the electronic structure of AB 3 (A = La, Y and B = In, Tl, Pb) at ambient as well as at high pressure and compared the findings with those of earlier studies of LaSn 3 and YSn 3 [7,8].…”

The Influence of Spin‐Orbit Interaction on the Electron‐Phonon Coupling in Tl‐Rich Cubic AuCu3‐Type Superconductors: Comparison with La3Tl

“…Intermetallic compounds crystallized in the simple cubic AuCu 3 ‐type the structure has been widely investigated in the last 50 years due to their various properties changing from magnetism to superconductivity. [ 1–35 ] For example, PrSn 3 and NdSn 3 have antiferromagnetic ordering with the N$$\acute{\rm e}$$el temperatures of 8.6 and 4.5 K [ 1,10 ] while a heavy fermion behavior has been observed for CeIn 3 , CePb 3 , and CePd 3 . [ 20,21,23,24 ] CeSn 3 has been categorized as a dense Kondo compound exhibiting valence fluctuations.…”

“…[ 13,18 ] Above all else, more than 20 superconducting compounds with the simple cubic AuCu 3 ‐type structure have been reported in the literature. [ 2,7–9,16,26,28–31,34,35 ] Among them the ATl 3 systems became of interest initially because of their varied superconducting transition temperatures ($$T_{\text{c}}$$) that range from 0.87 to 2.04 K. [ 2 ] ThTl 3 , YTl 3 , LaTl 3 , and CaTl 3 transform to superconductors at 0.87, 1.52, 1.63, and 2.04 K. Furthermore, the replacement La and Tl in LaTl 3 increases the $$T_{\text{c}}$$ value from 1.63 to 8.86 K by more than five times. [ 5 ] An interesting question is: why La 3 Tl have a much higher $$T_{\text{c}}$$ than LaTl 3 ?…”