Quantum Materials by Design with Electromagnetic Excitation
Abstract
The objective of the proposed multidisciplinary center ÒQuantum Materials by Design with Electromagnetic ExcitationÓ is to create new electronic states of matter that are unobtainable through conventional solid-state synthesis. We will utilize unique capabilities within our team that employ excitations across the entire electromagnetic (EM) spectrum, including with extremely high pulsed fields, to design, realize, and manipulate new phases and responses in strongly correlated materials. The rich and complex energy landscape of these materials makes them uniquely responsive to EM excitation that alters microscopic interactions and even spatial dimensionality, thus offering the greatest potential for the design and discovery of new driven states. Specifically, we will focus on realizing new correlated states via the following approaches, many of which have never been previously considered: (1) EM stimulated, bond selective, tuning of charge hopping parameters, (2) direct EM modification of magnetic exchange, order, and frustration, (3) continuous EM control of dimensionality and hybridization, and (4) EM excitation across kinetic barriers to realize metastable states that are thermodynamically inaccessible. Our goal is rational design and realization of truly new phases inaccessible by other methods. Our advanced tools allow for comprehensive interrogation of these new states and their responses with the required time resolution through a diverse array of pulsed probes of EM induced electrical/magnetic symmetries, band structure, ac conductivity, ac magnetic susceptibility and charge transport. Materials synthesis will target highly perfect epitaxial thin films, bulk single crystals and van der Waals heterostructures that are finely tuned near phase boundaries to facilitate discovery of EM driven states. Theory will identify the best systems and strategies for EM manipulation, calculate how the driven states are unveiled in ultrafast probes, and, with continuous feedback from experiment, aim at a predictive framework. The approaches we develop will form a very general roadmap for EM design of materials.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 06, 2017
- Source ID
- W911NF1610361
Entities
People
- David Hsieh
Organizations
- Army Contracting Command
- California Institute of Technology
- United States Army