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Bimodal Phase Diagram of the Superfluid Density in LaAlO3/SrTiO3 Revealed by an Interfacial Waveguide Resonator
- Source :
- Phys. Rev. Lett. 122, 036801 (2019)
- Publication Year :
- 2018
-
Abstract
- We explore the superconducting phase diagram of the two-dimensional electron system at the LaAlO3/SrTiO3 interface by monitoring the frequencies of the cavity modes of a coplanar waveguide resonator fabricated in the interface itself. We determine the phase diagram of the superconducting transition as a function of temperature and electrostatic gating, finding that both the superfluid density and the transition temperature follow a dome shape, but that the two are not monotonically related. The ground state of this 2DES is interpreted as a Josephson junction array, where a transition from long- to short-range order occurs as a function of the electronic doping. The synergy between correlated oxides and superconducting circuits is revealed to be a promising route to investigate these exotic compounds, complementary to standard magneto-transport measurements.<br />Comment: 5 pages, 4 figures and 10 pages of supplementary material
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Lett. 122, 036801 (2019)
- Publication Type :
- Report
- Accession number :
- edsarx.1809.10993
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevLett.122.036801