Chemical doping and high-pressure studies of layeredβ−PdBi2single crystals

Pressure effect on the superconducting and the normal state of β−Bi2Pd

“…Figure 2 shows comparison of the pressure dependence of T c for our β-Bi 2 Pd sample and the sample measured in Ref. [10]. One can see that values of T c are in good agreement with each other.…”

“…The fact that the width of the transition remains the same upon increasing pressure points to highly homogeneous hydrostatic pressure in our piston cylinder pressure cell. In order to compare our results with the work by Zhao et al [10], we analyzed their data in the same way as in our case, i.e., a value of T c is defined as the temperature corresponding to the midpoint of the resistivity transition and the width of the transition is defined as temperature range between 90% and 10% of resistivity value in normal state. Figure 2 shows comparison of the pressure dependence of T c for our β-Bi 2 Pd sample and the sample measured in Ref.…”

“…Therefore, we decided to study the influence of high pressure on superconducting parameters of β-Bi 2 Pd, and perform additional measurements of its normal-state properties. To our knowledge there is a single experimental study of the pressure effect (measured up to 16.63 kbar) on the superconducting transition temperature of β-Bi 2 Pd [10].…”

Synthesis, physical properties, and band structure of the layered bismuthidePtBi2

“…[1][2][3][4][5][6] Topological superconductivity is a new state of matter possessing symmetry-protected surface states while the bulk states are fully gapped by superconducting pairing. [7][8][9][10] The Majorana fermions are believed to exist on the surface or vortex core in such TSs, which may not only be of scientific importance, but also can lead to a wide-ranging applications in microelectronic devices and quantum computing.…”

Large spin to charge conversion in the topological superconductor β−PdBi2 at room temperature

“…The similar effect may appear in the doped β-PdBi2. Recent works have revealed evidence for a possible spin excitation associated with Fermi surface reconstruction for the doped β-PdBi2[55,56]. Once the Fermi level shifts towards the Dirac cone or Rashba-like crossing point, the spin-charge conversion efficiency may increase due to the enhanced interfacial spin accumulation in FM/doped β-PdBi2 systems.While a more quantitative analysis of its non-trivial surface states will be needed to separate out these effects, detailed characterizations of the spin Hall phenomena in the FM/β-PdBi2 at the superconducting state (below 4 K) would be pursued, at which Majorana modes in β-PdBi2 may be captured in the presence of the non-trivial superconducting excitations.…”