skip to main content

DOE PAGESDOE PAGES

Title: Multi-layered chalcogenides with potential for magnetism and superconductivity

Layered thallium copper chalcogenides can form single, double, or triple layers of Cu– Ch separated by Tl sheets. Here we report on the preparation and properties of Tl-based materials of TlCu 2Se 2, TlCu 4S 3, TlCu 4Se 3 and TlCu 6S 4. Having no long-range magnetism for these materials is quite surprising considering the possibilities of inter- and intra-layer exchange interactions through Cu 3 d, and we measure by magnetic susceptibility and confirm by neutron diffraction. First principles density-functional theory calculations for both the single-layer TlCu 2Se 2 (isostructural to the ‘122’ iron-based superconductors) and the double-layer TlCu 4Se 3 suggest a lack of Fermi-level spectral weight that is needed to drive a magnetic or superconducting instability. Furthermore, for multiple structural layers with Fe, there is much greater likelihood for magnetism and superconductivity.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725
Type:
Accepted Manuscript
Journal Name:
Physica. C, Superconductivity
Additional Journal Information:
Journal Volume: 531; Journal Issue: C; Journal ID: ISSN 0921-4534
Publisher:
Elsevier
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; thallium copper chalcogenides; superconductivity and magnetism; 2D crystal structures
OSTI Identifier:
1339407
Alternate Identifier(s):
OSTI ID: 1397009

Li, Li, Parker, David S., dela Cruz, Clarina R., and Sefat, Athena Safa. Multi-layered chalcogenides with potential for magnetism and superconductivity. United States: N. p., Web. doi:10.1016/j.physc.2016.10.005.
Li, Li, Parker, David S., dela Cruz, Clarina R., & Sefat, Athena Safa. Multi-layered chalcogenides with potential for magnetism and superconductivity. United States. doi:10.1016/j.physc.2016.10.005.
Li, Li, Parker, David S., dela Cruz, Clarina R., and Sefat, Athena Safa. 2016. "Multi-layered chalcogenides with potential for magnetism and superconductivity". United States. doi:10.1016/j.physc.2016.10.005. https://www.osti.gov/servlets/purl/1339407.
@article{osti_1339407,
title = {Multi-layered chalcogenides with potential for magnetism and superconductivity},
author = {Li, Li and Parker, David S. and dela Cruz, Clarina R. and Sefat, Athena Safa},
abstractNote = {Layered thallium copper chalcogenides can form single, double, or triple layers of Cu–Ch separated by Tl sheets. Here we report on the preparation and properties of Tl-based materials of TlCu2Se2, TlCu4S3, TlCu4Se3 and TlCu6S4. Having no long-range magnetism for these materials is quite surprising considering the possibilities of inter- and intra-layer exchange interactions through Cu 3d, and we measure by magnetic susceptibility and confirm by neutron diffraction. First principles density-functional theory calculations for both the single-layer TlCu2Se2 (isostructural to the ‘122’ iron-based superconductors) and the double-layer TlCu4Se3 suggest a lack of Fermi-level spectral weight that is needed to drive a magnetic or superconducting instability. Furthermore, for multiple structural layers with Fe, there is much greater likelihood for magnetism and superconductivity.},
doi = {10.1016/j.physc.2016.10.005},
journal = {Physica. C, Superconductivity},
number = C,
volume = 531,
place = {United States},
year = {2016},
month = {10}
}