Multiple electronic transitions and superconductivity in PdxTiSe2
E. Morosan, K. E. Wagner, Liang L. Zhao, Y. Hor, A. J. Williams, J. Tao, Y. Zhu, R. J. Cava
DOI 10.1103/PhysRevB.81.094524 · Physical Review B
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Abstract
We report the synthesis and characterization of PdxTiSe2 via magnetization, resistivity, specific heat measurements, and low-temperature electron diffraction. At very low levels of intercalation, near Pd0.01TiSe2, the commensurate charge density wave transition in the TiSe2 parent compound near 220 K becomes substantially stronger; a distinct transition to a more resistive state is seen at about 80 K. Originally semimetallic, TiSe2 becomes an insulator at low temperatures for 0.01≤x≤0.06 in PdxTiSe2. Increasing Pd intercalation beyond this level begins to suppress the insulating behavior until a 2 K superconductor is found in the narrow composition range of 0.11≤x≤0.12. Beyond x=0.12, a normal metallic state (down to 0.3 K) is induced.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PdxTiSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2 | Pressure not reported | unknown |
| CuxTiSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.15 | Pressure not reported | unknown |
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