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Long-Range Phase Coherence in Double-Barrier Magnetic Tunnel Junctions with a Large Thick Metallic Quantum Well

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  • معلومة اضافية
    • Contributors:
      Beijing National Laboratory for Condensed Matter Physics and Institute of Physics (IoP/CAS); Chinese Academy of Sciences Changchun Branch (CAS); Institut Jean Lamour (IJL); Institut de Chimie - CNRS Chimie (INC-CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS); SPINtronique et TEchnologie des Composants (SPINTEC); Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes 2016-2019 (UGA 2016-2019 )-Institut de Recherche Interdisciplinaire de Grenoble (IRIG); Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)); Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA); ANR-14-CE26-0028,ENSEMBLE,Transport du spin des électrons et communication avec le spin nucléaire dans des structures verticales métal-SiGe-métal fabriqué par collage moléculaire(2014)
    • بيانات النشر:
      CCSD
      American Physical Society
    • الموضوع:
      2015
    • Collection:
      Université de Lorraine: HAL
    • نبذة مختصرة :
      Équipe 101 : Nanomagnétisme et électronique de spin ; International audience ; Double-barrier heterostructures are model systems for the study of electron tunneling and discrete energy levels in a quantum well (QW). Until now resonant tunneling phenomena in metallic QWs have been observed for limited thicknesses (1-2 nm) under which electron phase coherence is conserved. In the present study we show evidence of QW resonance states in Fe QWs up to 12 nm thick and at room temperature in fully epitaxial double MgAlOx barrier magnetic tunnel junctions. The electron phase coherence displayed in this QWis of unprecedented quality because of a homogenous interface phase shift due to the small lattice mismatch at the Fe-MgAlOx interface. The physical understanding of the critical role of interface strain on QW phase coherence will greatly promote the development of spin-dependent quantum resonant tunneling applications.
    • الرقم المعرف:
      10.1103/PhysRevLett.115.157204
    • الدخول الالكتروني :
      https://hal.science/hal-01284017
      https://hal.science/hal-01284017v1/document
      https://hal.science/hal-01284017v1/file/Yuan_PRL2015.pdf
      https://doi.org/10.1103/PhysRevLett.115.157204
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.334CE368