New Superconductors near Broken Rotational Symmetry Instabilities
Abstract
Unconventional superconductivity is often discovered in materials on the verge of symmetrybreakinginstabilities. In both iron-and copper-based high temperature superconductors, brokenrotational symmetry phases play a significant role in determining the normal metallic stateproperties, and are suspected to be responsible for the superconducting pairing interactions. Theobjective of this proposal is to investigate broken rotational symmetry phases in materialsbeyond iron- and copper-based materials, and search for superconductivity by suppressing thesymmetry breaking phase using chemical substitutions. We will focus on materials with chargedensity waves or collinear antiferromagnetic orders in four-fold symmetric crystals lattice suchas LaAgSb2 and GdRnIn5.The research program will integrate crystal growth andcharacterization with elastoresistivity measurements that utilize the strain to directly detect thefluctuations associated with the broken symmetry phases. The goal is to establish a fundamentalunderstanding of the relationship between superconductivity and the broken rotational symmetry,and thereby to establish a general guideline for designing new and useful superconductingmaterials.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 28, 2017
- Source ID
- FA95501710217
Entities
People
- Jiun-Haw Chu
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Washington