Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session D10: Quantum Information Properties of Matter
3:00 PM–5:24 PM,
Monday, March 4, 2024
Room: M100A
Sponsoring
Unit:
DCMP
Chair: Aaron Szasz, Lawrence Berkeley National Laboratory
Abstract: D10.00010 : Novel Multi-modal Spectroscopy Probe of Emergent Quanutm Order in Materials*
4:48 PM–5:00 PM
Presenter:
Ilija K Nikolov
(Brown University)
Authors:
Ilija K Nikolov
(Brown University)
Rong Cong
(Brown University)
Stephen T Carr
(Brown University)
Adrian G Del Maestro
(University of Tennessee)
Chandrasekhar Ramanathan
(Dartmouth College)
Vesna F Mitrovic
(Brown University)
Here, we describe our novel approach to probe quantum states of matter by monitoring the net quantum phase accumulated during the controlled nuclear spin-ensemble time-evolution under the influence of the relevant local microscopic electronic Hamiltonian. Complex radio-frequency pulse sequences serve to selectively control decoherence from different parameters in the Hamiltonian, allowing us to independently distinguish their type (e.g., spin, charge, and/or orbital) and measure their relative strength together with their distribution/noise. Specifically, we discuss how this spin-based, multi-modal technique can quantify the inversion symmetric and inversion asymmetric interactions in the presence of strong magnetic noise. it allows for identifying the presence of these interactions and their fluctuations, even for a zero-mean value. We showcase the application of this technique on a strongly correlated material, a Mott insulator with strong spin-orbit coupling, where we distinguish between charge and spin DOFs.
- PRB 108, 054421
*This work was supported in part by the US National Science Foundation through Grants OIA 1921199 and DMR 1905532.
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