Building blockes; Chiral molecule; DNA-proteins; Electron transfer; Electron transport; One-dimensional; Reconfigurable; Selectivity effects; Spin magnetization; Spin-polarization; Multidisciplinary
Abstract :
[en] The origin and function of chirality in DNA, proteins, and other building blocks of life represent a central question in biology. Observations of spin polarization and magnetization associated with electron transport through chiral molecules, known collectively as the chiral induced spin selectivity effect, suggest that chirality improves electron transfer. Using reconfigurable nanoscale control over conductivity at the LaAlO3/SrTiO3 interface, we create chiral electron potentials that explicitly lack mirror symmetry. Quantum transport measurements on these chiral nanowires reveal enhanced electron pairing persisting to high magnetic fields (up to 18 tesla) and oscillatory transmission resonances as functions of both magnetic field and chemical potential. We interpret these resonances as arising from an engineered axial spin-orbit interaction within the chiral region. The ability to create one-dimensional electron waveguides with this specificity creates opportunities to test, via analog quantum simulation, theories about chirality and spin-polarized electron transport in one-dimensional geometries.
Disciplines :
Physics
Author, co-author :
Briggeman, Megan ; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Mansfield, Elliott; Department of Physics, University of Strathclyde, Glasgow G1 1XQ, UK
Kombe, Johannes ; Department of Physics, University of Strathclyde, Glasgow G1 1XQ, UK
Damanet, François ; Université de Liège - ULiège > Complex and Entangled Systems from Atoms to Materials (CESAM)
Lee, Hyungwoo ; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
Tang, Yuhe; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Yu, Muqing ; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Biswas, Sayanwita ; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Li, Jianan; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Huang, Mengchen; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Eom, Chang-Beom ; Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA
Irvin, Patrick ; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Daley, Andrew J ; Department of Physics, University of Oxford, Oxford, UK
Levy, Jeremy ; Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA ; Pittsburgh Quantum Institute, Pittsburgh, PA 15260, USA
Acknowledgments: We acknowledge helpful discussions with T. Giamarchi and D. Waldeck.We acknowledge financial support from AFOSR MURI FA9550-23-1-0368 (J.Le.); NSF PHY-1913034 and NSF DMR-2225888 (P.I. and J.Le.); Gordon and Betty Moore Foundation\u2019s EPiQS Initiative, grant 284, GBMF9065 (C.-B.E.); and a Vannevar Bush Faculty Fellowship N00014-20-1-2844 (C.-B.E). Transport measurement at the University of Wisconsin-Madison was supported by the US Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences (BES), under award number DE-FG02-06ER46327. Work at Strathclyde and Oxford was supported by UKRI through the EPSRC Programme grants DesOEQ (EP/P009565/1) and QQQS (EP/Y01510X/1).
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