29–30 Oct 2019
FHNW Brugg
Europe/Zurich timezone

Manipulating the ground state in nickelates using proximity with magnetic layers

30 Oct 2019, 09:00
20m
FHNW Brugg

FHNW Brugg

Oral presentation Contributed talks

Speaker

Marco Caputo (PSI - Paul Scherrer Institut)

Description

Transition metal oxides (TMO) are a class of materials where the charge, orbital, magnetic, and spin degrees of freedom are mutually connected. Interfacing different TMOs offers the possibility to act on each of these degrees of freedom, tailoring new materials with desired properties. In this talk, I will show the effect of the presence of a magnetic proximity layer on the ground state of neodymium nickelate (NNO) interfacing thin NNO films with ferro- and antiferromagnetic manganite layers (strontium doped lanthanum manganite – LSMO) grown via pulsed laser deposition (PLD). Angle resolved photoemission spectroscopy (ARPES) and X-ray magnetic circular dichroism (XMCD), supported by momentum-resolved density fluctuation (MRDF) theory, revealed the suppression of the PM metal – AFM insulator transition in NNO thin films, and the emergence of a new FM metal ground state. This work paves the way for tailoring magnetic properties in different oxides, where already existing magnetic ordering can be tuned using proximity effects.

Position Postdoc

Primary author

Marco Caputo (PSI - Paul Scherrer Institut)

Co-authors

Dr Zoran Ristic (Laboratory for Radiation Chemistry and Physics, VINCA Institute of Nuclear Sciences, Belgrade University, 11001 Belgrade, Serbia) Dhaka Rajej (Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi-110016, India) Dr Tanmoy Das (Department of Physics, Indian Institute of Science, Bangalore 560012, India ) Mr Kim Hongwon (Photon Science Department, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland) Jasmin Maria Jandke (PSI - Paul Scherrer Institut) Eduardo Bonini Guedes (Paul Scherrer Institute) Dr Muntaser Naamneh (PSI) Nicholas Plumb (Paul Scherrer Institut) Jan Hugo Dil (Paul Scherrer Institut) Ming Shi (Paul Scherrer Institut) Joel Mesot (Paul Scherrer Institut) Marisa medarde (Paul Scherrer Institut) Cinthia Piamonteze (Paul Scherrer Institut) Milan Radovic (Paul Scherrer Institut)

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