Effect of selenium doping on the superconductivity of Nb2Pd(S1−xSex

Superconductivity at 4.4 K in PdTe2 Chains of a Ta-Based Compound

“…Magnetic susceptibility (4πχ) as shown in Figure 3 is recorded in zero field cooled (ZFC) and field cooled (FC) conditions under applied field of 10Oe as a function of temperature, which confirms strong diamagnetic property below 4.4K for nominal Ta 2 Pd 0.97 Te 6 and Ta 4 Pd 3 Te 16 phase crystallized compound. As clear from ZFC magnetic susceptibility, the superconducting volume fraction or diamagnetic shielding of the sample is though above 75%, the FC curve that presents the Meissonier expulsion of applied magnetic field (10Oe) is about 22% at 2K.…”

“…The discovery of high-temperature superconductivity in low-dimensional systems especially in Curates and Iron-based compounds is well celebrated and most haunted phenomenon in condensed matter physics in recent times [1,2]. Recent observation of superconductivity in a strong spin-orbit coupled 4d and 5d transition metal based compound like (Ta/Nb) x Pd(Te/Se/S) y has been arousing high hopes for researchers due to their high critical field [3][4][5][6][7][8][9]. For a compound Ta 2 Pd x S 5 (x<1), Zhang et al first reported type II superconductivity with T c up to 6K [3].…”

Single gap s-wave superconductivity in Nb2PdS5

“…This value exceeds the Pauli paramagnetic limit Hc 2 (0) = 1.84T c by over 3 times [1][2][3][4]. The anisotropic upper critical field ( ~ 3) along with temperature dependent anisotropy was indicative of possible multiband superconductivity [1,5].…”

Superconductivity at 4 K in Pd-Deficient Layered Ta2Pd x S6

“…Strong spin-orbit coupled 4d and 5d transition metal based compounds such as (Nb/Ta) 2 Pd x (S/Se/Te) y have gained renewed research interests due to their exotic superconducting properties, such as exceptionally large upper critical fields, being surpassing the Pauli paramagnetic limit, H p~1 .84T c , their multi band nature and pressure independent superconducting transition temperature (T c ) [1][2][3][4][5][6][7][8]. In a very recent experimental observations Lu et.…”

“…Following the available reports [1][2][3][4][5][6][7][8] on superconductivity of (Nb/Ta)Pd(S/Se/Te) compounds, the identification of right phase and composition of them seems to be the major issue yet. Further, the role of Pd-centered square planer structure needs to be probed in detail to comprehend the extraordinary physical properties in Pd-based chalcogenide superconductor [1][2][3][4][5][6][7][8].…”