Université de Fribourg

Doping nature of native defects in 1T−TiSe₂

Hildebrand, Baptiste ; Didiot, Clément ; Novello, A. M. ; Monney, Gaël ; Scarfato, A. ; Ubaldini, A. ; Berger, Helmuth ; Bowler, D. R. ; Renner, Christoph ; Aebi, Philipp

In: Physical Review Letters, 2014, vol. 112, no. 19, p. 197001

The transition-metal dichalcogenide 1T−TiSe₂is a quasi-two-dimensional layered material with a charge density wave (CDW) transition temperature of TCDW≈200 K. Self-doping effects for crystals grown at different temperatures introduce structural defects, modify the temperature-dependent resistivity, and strongly perturbate the CDW phase. Here, we study the structural and doping nature...