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15 p, 1.5 MB Room-temperature tunnel magnetoresistance across biomolecular tunnel junctions based on ferritin / Karuppannan, Senthil kumar (National University of Singapore. Department of Chemistry) ; Pasula, Rupali Reddy (Nanyang Technological University. School of Chemical and Biomedical Engineering) ; Herng, Tun Seng (National University of Singapore. Department of Materials Science and Engineering) ; Ding, Jun (National University of Singapore. Department of Materials Science and Engineering) ; Chi, Xiao (Singapore Synchrotron Light Source) ; Del Barco, Enrique (University of Central Florida. Department of Physics) ; Roche, Stephan (Institut Català de Nanociència i Nanotecnologia) ; Yu, Xiaojiang (Singapore Synchrotron Light Source) ; Yakovlev, Nikolai (Institute of Materials Research and Engineering (Singapur, Singapur)) ; Lim, Sierin (Nanyang Technological University. School of Chemical and Biomedical Engineering) ; Nijhuis, Christian A. (University of Twente. Department of Molecules and Materials)
We report exceptionally large tunnel magnetoresistance (TMR) for biomolecular tunnel junctions based on ferritins immobilized between Ni and EGaIn electrodes. Ferritin stores iron in the form of ferrihydrite nanoparticles (NPs) and fulfills the following roles: (a) it dictates the tunnel barrier, (b) it magnetically decouples the NPs from the ferromagnetic (FM) electrode, (c) it stabilizes the NPs, and (d) it acts as a spin filter reducing the complexity of the tunnel junctions since only one FM electrode is required. [...]
2021 - 10.1088/2515-7639/abfa79
JPhys materials, Vol. 4, issue 3 (April 2021) , art. 035003  

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