Multiple Electronic Transitions and Superconductivity in PdxTiSe2
We report the synthesis and characterization of Pd{sub x}TiSe{sub 2} via magnetization, resistivity, specific heat measurements, and low-temperature electron diffraction. At very low levels of intercalation, near Pd{sub 0.01}TiSe{sub 2}, the commensurate charge density wave transition in the TiSe{sub 2} parent compound near 220 K becomes substantially stronger; a distinct transition to a more resistive state is seen at about 80 K. Originally semimetallic, TiSe{sub 2} becomes an insulator at low temperatures for 0.01 {le} x {le} 0.06 in Pd{sub x}TiSe{sub 2}. 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 {le} x {le} 0.12. Beyond x = 0.12, a normal metallic state (down to 0.3 K) is induced.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 984800
- Report Number(s):
- BNL-93707-2010-JA; KC0201010; TRN: US1006030
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 81, Issue 9; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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