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Zero Helicity States in the LaAlO3-SrTiO3 Interface: The Origin of the Mass Anisotropy

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Abstract

We consider the transverse magnetic moment and torque observed by Li et al. (Nat. Phys. 7, 762 (2011)) in the LaAlO3/SrTiO3 interface and the theoretical model for it based on the zero helicity states. The transverse magnetic moment is explained in terms of an asymmetry between the two sides of the interface. We show here that there is an intrinsic magnetization which gives rise to a mass anisotropy in each side of the interface.

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Acknowledgments

M. Cariglia acknowledges CNPq support from project (205029/2014-0) and FAPEMIG support from project APQ-02164-14. M.M. Doria and E.I.B.Rodrigues acknowledges CNPq support from project:23079.014992/2015-39 and CNPq:160019/2013-3, respectively. A. Perali acknowledges financial support from the University of Camerino under the project FAR “Control and enhancement of superconductivity by engineering materials at the nanoscale”. All authors acknowledge the collaboration within the MultiSuper International Network (http://www.multisuper.org) for exchange of ideas and suggestions.

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Authors and Affiliations

  1. Departamento de Física, Universidade Federal da Paraíba, 58051-970, João Pessoa, Paraíba, Brazil

    Edinardo I. B. Rodrigues

  2. Instituto de Física, Universidade Federal do Rio de Janeiro, 21941-972, Rio de Janeiro, Brazil

    Mauro M. Doria

  3. School of Pharmacy, Physics Unit, University of Camerino, 62032, Camerino, Italy

    Mauro M. Doria, Marco Cariglia & Andrea Perali

  4. School of Science and Technology, Physics Division, University of Camerino, 62032, Camerino, Italy

    Alfredo A. Vargas-Paredes

  5. Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020, Antwerpen, Belgium

    Alfredo A. Vargas-Paredes

  6. Departamento de Física, Universidade Federal de Ouro Preto, 35400-000, Ouro Preto Minas Gerais, Brazil

    Marco Cariglia

  7. INFN Sezione di Perugia, Perugia, Italy

    Andrea Perali

Authors
  1. Edinardo I. B. Rodrigues
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  2. Mauro M. Doria
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  3. Alfredo A. Vargas-Paredes
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  4. Marco Cariglia
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  5. Andrea Perali
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Correspondence to Mauro M. Doria.

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Rodrigues, E.I.B., Doria, M.M., Vargas-Paredes, A.A. et al. Zero Helicity States in the LaAlO3-SrTiO3 Interface: The Origin of the Mass Anisotropy. J Supercond Nov Magn 30, 145–150 (2017). https://doi.org/10.1007/s10948-016-3739-0

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  • DOI: https://doi.org/10.1007/s10948-016-3739-0

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