Berlin 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 72: Low-Dimensional Systems: Poster Session
TT 72.3: Poster
Mittwoch, 18. März 2015, 15:00–18:00, Poster B
Interplay of multiple charge-density-waves and superconductivity in DyTe3 at high pressures — •Diego A. Zocco1,4, Andreas Kapuvari1, Aaron Sauer1, Frank Weber1, Parisiadis Paraskevas2, Gaston Garbarino2, Ian Fisher3, James Hamlin4, and Brian Maple4 — 1Institute for Solid State Physics, Karlsruhe Institute of Technology, D-76021 Karlsruhe, Germany — 2European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France — 3Department of Applied Physics, Stanford University, CA 94305, USA — 4Department of Physics, University of California, San Diego, CA 92093, USA
DyTe3 is a quasi-two-dimensional system in which two successive incommensurate charge-density-wave (CDW) states appear upon cooling at ambient pressure (TCDW,1 = 306 K, TCDW,2 = 49 K). The suppression with pressure of the CDW order is followed by the emergence of superconductivity above 1 GPa and below 1.5 K, as shown by our measurements of electrical resistivity and ac-susceptibility. X-ray diffraction (XRD) experiments under pressure indicate that the lower CDW state merges with the upper one at an intermediate pressure, suggesting that the double-CDW state could be accessed directly below a single TCDW(P) line. The phase diagram obtained from XRD is compared with the results of our recent electrical resistivity experiments.