Journal of Superconductivity and Novel Magnetism

, Volume 30, Issue 1, pp 145–150 | Cite as

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

  • Edinardo I. B. Rodrigues
  • Mauro M. Doria
  • Alfredo A. Vargas-Paredes
  • Marco Cariglia
  • Andrea Perali
Original Paper


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.


Torque Magnetic moment Order parameter Interface between LaAlO3/SrTiO3 Zero helicity state 



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 ( for exchange of ideas and suggestions.


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  1. 1.Departamento de FísicaUniversidade Federal da ParaíbaJoão PessoaBrazil
  2. 2.Instituto de FísicaUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
  3. 3.School of Pharmacy, Physics UnitUniversity of CamerinoCamerinoItaly
  4. 4.School of Science and Technology, Physics DivisionUniversity of CamerinoCamerinoItaly
  5. 5.Departement FysicaUniversiteit AntwerpenAntwerpenBelgium
  6. 6.Departamento de FísicaUniversidade Federal de Ouro PretoOuro Preto Minas GeraisBrazil
  7. 7.INFN Sezione di PerugiaPerugiaItaly

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