Micrometer-Scale Ballistic Transport of Electron Pairs in LaAlO3/SrTiO3 Nanowires. Tomczyk, M., Cheng, G., Lee, H., Lu, S., Annadi, A., Veazey, J. P., Huang, M., Irvin, P., Ryu, S., Eom, C., & Levy, J. PHYSICAL REVIEW LETTERS, AUG 22, 2016.
doi  abstract   bibtex   
High-mobility complex-oxide heterostructures and nanostructures offer new opportunities for extending the paradigm of quantum transport beyond the realm of traditional III-V or carbon-based materials. Recent quantum transport investigations with LaAlO3/SrTiO3-based quantum dots reveal the existence of a strongly correlated phase in which electrons form spin-singlet pairs without becoming superconducting. Here, we report evidence for the micrometer-scale ballistic transport of electron pairs in quasi-1D LaAlO3/SrTiO3 nanowire cavities. In the paired phase, Fabry-Perot-like quantum interference is observed, in sync with conductance oscillations observed in the superconducting regime (at a zero magnetic field). Above a critical magnetic field B-p, the electron pairs unbind and the conductance oscillations shift with the magnetic field. These experimental observations extend the regime of ballistic electronic transport to strongly correlated phases.
@article{ ISI:000382007200004,
Author = {Tomczyk, Michelle and Cheng, Guanglei and Lee, Hyungwoo and Lu, Shicheng
   and Annadi, Anil and Veazey, Joshua P. and Huang, Mengchen and Irvin,
   Patrick and Ryu, Sangwoo and Eom, Chang-Beom and Levy, Jeremy},
Title = {{Micrometer-Scale Ballistic Transport of Electron Pairs in LaAlO3/SrTiO3
   Nanowires}},
Journal = {{PHYSICAL REVIEW LETTERS}},
Year = {{2016}},
Volume = {{117}},
Number = {{9}},
Month = {{AUG 22}},
Abstract = {{High-mobility complex-oxide heterostructures and nanostructures offer
   new opportunities for extending the paradigm of quantum transport beyond
   the realm of traditional III-V or carbon-based materials. Recent quantum
   transport investigations with LaAlO3/SrTiO3-based quantum dots reveal
   the existence of a strongly correlated phase in which electrons form
   spin-singlet pairs without becoming superconducting. Here, we report
   evidence for the micrometer-scale ballistic transport of electron pairs
   in quasi-1D LaAlO3/SrTiO3 nanowire cavities. In the paired phase,
   Fabry-Perot-like quantum interference is observed, in sync with
   conductance oscillations observed in the superconducting regime (at a
   zero magnetic field). Above a critical magnetic field B-p, the electron
   pairs unbind and the conductance oscillations shift with the magnetic
   field. These experimental observations extend the regime of ballistic
   electronic transport to strongly correlated phases.}},
DOI = {{10.1103/PhysRevLett.117.096801}},
Article-Number = {{096801}},
ISSN = {{0031-9007}},
EISSN = {{1079-7114}},
ResearcherID-Numbers = {{Eom, Chang-Beom/I-5567-2014
   Lee, Hyungwoo/H-9347-2018
   Annadi, Anil/M-1239-2014}},
ORCID-Numbers = {{Annadi, Anil/0000-0003-2817-8225}},
Unique-ID = {{ISI:000382007200004}},
}

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