Jump to main content
Jump to site search


Bacteriorhodopsin based non-magnetic spin filters for biomolecular spintronics

Author affiliations

Abstract

We discuss spin injection and spin valves, which are based on organic and biomolecules, that offer the possibility to overcome some of the limitations of solid-state devices, which are based on ferromagnetic metal electrodes. In particular, we discuss spin filtering through bacteriorhodopsin in a solid state biomolecular spin valve that is based on the chirality induced spin selectivity (CISS) effect and shows a magnetoresistance of ∼2% at room temperature. The device is fabricated using a layer of bacteriorhodopsin (treated with n-octyl-thioglucoside detergent: OTG-bR) that is adsorbed on a cysteamine functionalized gold electrode and capped with a magnesium oxide layer as a tunneling barrier, upon which a Ni top electrode film is placed and used as a spin analyzer. The bR based spin valves show an antisymmetric magnetoresistance response when a magnetic field is applied along the direction of the current flow, whereas they display a positive symmetric magnetoresistance curve when a magnetic field is applied perpendicular to the current direction.

Graphical abstract: Bacteriorhodopsin based non-magnetic spin filters for biomolecular spintronics

Back to tab navigation

Supplementary files

Publication details

The article was received on 04 Oct 2017, accepted on 27 Nov 2017 and first published on 27 Nov 2017


Article type: Paper
DOI: 10.1039/C7CP06771B
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
  •   Request permissions

    Bacteriorhodopsin based non-magnetic spin filters for biomolecular spintronics

    V. Varade, T. Markus, K. Vankayala, N. Friedman, M. Sheves, D. H. Waldeck and R. Naaman, Phys. Chem. Chem. Phys., 2018, Advance Article , DOI: 10.1039/C7CP06771B

Search articles by author

Spotlight

Advertisements