Three-dimensional collective flux pinning in the layered superconductor 2H-NbSe2-xSx

NbSeTe—a new layered transition metal dichalcogenide superconductor

“…Up until now, numerous theoretical and experimental works about its physical properties have been reported. The researchers prefer to use the effective and mature methods to regulate and control the CDW and the superconducting behavior, such as chemical doping [12][13][14][15][16][17][18] , adopting high pressure [19][20][21][22] , gating 23 and controlling layers of the nanoscale samples. It has been established previously that the intercalation of 3d transition metals (such as Zn, Al, Co, Ni, Fe) into 2H-NbSe2 quickly destroyed the Tc to < 1 K. [24][25] Recently, Cava group has also reported that the intercalation of Cu into 2H-NbSe2 to obtain CuxNbSe2 (0 ≤ x ≤ 0.09) 4 15 .…”

The unusual suppression of superconducting transition temperature in double-doping 2H-NbSe2

“…In the experimental case, researchers have typically used familiar and effective ways to tune the superconducting and CDW transition temperatures of this class, including chemical doping (e.g. [17][18][19][20][21][22]), adopting high pressure (e.g. [23][24][25][26]), and gating [27].…”

Evidence for different regimes of collective flux-line pinning inYBa2Cu3Hiergeist1, Hergt2 1997Phys. Rev. B12010View full textAdd to dashboardCite

“…Larkin and Ovchinnikov 1 gave an explanation in terms of a softening of the FLL due to the strong dispersion of the tilt modulus c 44 ͑q͒ close to H c2 . Sugawara et al 3 found for layered superconductors that this model is able to describe the ''peak'' effect quantitatively. Nevertheless, they found that some discrepancies between the experimental data and the theory remain unsolved.…”