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Title: Induced Ferromagnetism at BiFeO3/YBa2Cu3O7 Interfaces

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep05368· OSTI ID:1321736
 [1];  [1];  [2];  [3];  [3];  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); James Madison Univ., Harrisonburg, VA (United States)
  3. Nanyang Technological Univ. (Singapore)

We report that transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new functionalities can arise, which are absent in individual components. Here, we report results from first-principles calculations on the magnetism at the BiFeO3/YBa2Cu3O7 interfaces. By comparing the total energy for various magnetic spin configurations inside BiFeO3, we are able to show that a metallic ferromagnetism is induced near the interface. We further develop an interface exchange-coupling model and place the extracted exchange coupling interaction strengths, from the first-principles calculations, into a resultant generic phase diagram. Our conclusion of interfacial ferromagnetism is confirmed by the presence of a hysteresis loop in field-dependent magnetization data. Lastly, the emergence of interfacial ferromagnetism should have implications to electronic and transport properties.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1321736
Report Number(s):
LA-UR-13-28856
Journal Information:
Scientific Reports, Vol. 4; Conference: 2014 APS March Meeting ; 2014-03-03 - 2014-03-07 ; Denver, Colorado, United States; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Cited By (5)

Studying the Polarization Switching in Polycrystalline BiFeO3 Films by 2D Piezoresponse Force Microscopy journal July 2015
Polarization screening-induced epitaxial growth and interfacial magnetism of BiFeO 3 /PbTiO 3 nanoplates journal January 2020
Magnetic, electronic, and optical properties of double perovskite Bi 2 FeMnO 6 journal March 2017
Structural investigation of (111) oriented (BiFeO 3 ) (1- x /(LaFeO 3 ) x Λ superlattices by X-ray diffraction and Raman spectroscopy journal April 2018
Charge-Transfer-Induced Interfacial Exchange Coupling at the Co / Bi Fe O 3 Interface journal October 2019