Speaker
Wojciech Pudelko
(Paul Scherrer Institut)
Description
Layered transition metal dichalcogenides exhibit numerous exotic electronic phases, which are known to be highly sensitive to minute changes in virtually any external parameter. We found that vanadium intercalation into the TaS$_2$ (V$_x$TaS$_2$) leads to intriguing changes in its properties. Upon increasing $x$, the electronic structure evolves from the pure 2H phase known for its charge density wave (CDW) and superconductivity to a pure 1T structure characterized by CDW and Mott interactions, with a clear coexistence of both at intermediate range. By exploiting V intercalation as a means to assemble 2H/1T layered heterostructures, we are granted a spectroscopic window into each layer type, as well as the interplay between them.
Author
Wojciech Pudelko
(Paul Scherrer Institut)
Co-authors
Prof.
Andreas Schilling
(Universität Zürich)
Eduardo Bonini Guedes
Francesco Petocchi
Hang Li
Huanlong Liu
(University of Zurich)
Johan Chang
(Physik-Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland)
Julia Küspert
(Physik-Institut, Universität Zürich)
Karin von Arx
(University of Zurich)
Nicholas Clark Plumb
Philipp Werner
(University of Fribourg)
Ron Cohn-Wagner
(University of Zurich)
