Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 113, Issue 11, Pages 2904-2909Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1601262113
Keywords
high pressure; Dirac semimetals; superconductivity; synchrotron X-ray diffraction
Categories
Funding
- National Key Projects for Basic Research of China [2011CBA00111, 2015CB921202]
- National Natural Science Foundation of China [U1530402, U1332139, U1332143, U1432251, 11574323, 11204312, 11374137, 11374302, 51372112, 11525417, 11574133]
- Natural Science Foundation of Jiangsu province [BK20150012]
- Fundamental Research Funds for the Central Universities
- DOE-BES X-ray Scattering Core Program [DE-FG02-99ER45775]
- Department of Energy-National Nuclear Security Administration (DOE-NNSA) [DE-NA0001974]
- Department of Energy-Basic Energy Science (DOE-BES) [DE-FG02-99ER45775]
- National Science Foundation (NSF)
- DOE-BES [DE-AC02-06CH11357]
Ask authors/readers for more resources
As a new type of topological materials, ZrTe5 shows many exotic properties under extreme conditions. Using resistance and ac magnetic susceptibility measurements under high pressure, while the resistance anomaly near 128 K is completely suppressed at 6.2 GPa, a fully superconducting transition emerges. The superconducting transition temperature T-c increases with applied pressure, and reaches a maximum of 4.0 K at 14.6 GPa, followed by a slight drop but remaining almost constant value up to 68.5 GPa. At pressures above 21.2 GPa, a second superconducting phase with the maximum T-c of about 6.0 K appears and coexists with the original one to the maximum pressure studied in this work. In situ high-pressure synchrotron X-ray diffraction and Raman spectroscopy combined with theoretical calculations indicate the observed two-stage superconducting behavior is correlated to the structural phase transition from ambient Cmcm phase to high-pressure C2/m phase around 6 GPa, and to a mixture of two high-pressure phases of C2/m and P-1 above 20 GPa. The combination of structure, transport measurement, and theoretical calculations enable a complete understanding of the emerging exotic properties in 3D topological materials under extreme environments.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available