The curious case of the magnetic field-sensitive charge density waves in UTe<sub>2</sub>
ORAL · Invited
Abstract
In the ongoing search for new phases of matter, UTe2 which combines strong correlations and unconventional superconductivity with possible non-trivial topology, is an extremely promising system. A plethora of surprising and confounding experimental phenomenology have been reported in this material, since its re-emergence in 2019. In this talk, I am going to present our discovery of a multicomponent, incommensurate charge density wave (CDW) order in UTe2 using high resolution scanning tunneling microscopy and spectroscopy at 300 mK. The CDWs show an unexpected and unusual sensitivity to magnetic field, with the strength of the CDW order decreasing, and eventually disappearing close to the superconducting Hc2 indicating that the CDWs are strongly intertwined with superconductivity. In addition, the response of the CDWs is sensitive to the field orientation, similar to the behavior of superconductivity in this system. I will also discuss the possible implications and origin of such a CDW state and its connection to the underlying exotic superconducting state.
*STM studies at the University of Illinois, Urbana-Champaign was supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES), Materials Sciences and Engineering Division under Award No. DE-SC0022101, with partial support from Gordon and Betty More Foundation’s EPiQS Initiative through grant GBMF4860 and the Quantum Materials Program at CIFAR.
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Publication: arXiv preprint: arXiv:2207.09491
Presenters
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Anuva Aishwarya
- University of Illinois at Urbana Champaign