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Contact Induced Spin Relaxation in Graphene Spin Valves with Al2O3 and MgO Tunnel Barriers
Walid Amamou, Zhisheng Lin, Jeremiah van Baren +3
We investigate spin relaxation in graphene by systematically comparing the roles of spin absorption, other contact-induced effects (e.g. fringe fields, etc.), and bulk spin relaxat…
Experimental Demonstration of XOR Operation in Graphene Magnetologic Gates at Room Temperature
Hua Wen, Hanan Dery, Walid Amamou +7
We report the experimental demonstration of a magnetologic gate built on graphene at room temperature. This magnetologic gate consists of three ferromagnetic electrodes contacting…
Molecular beam epitaxy growth of SrO buffer layers on graphite and graphene for the integration of complex oxides
Adam Ahmed, Hua Wen, Taisuke Ohta +4
We report the successful growth of high-quality SrO films on highly-ordered pyrolytic graphite (HOPG) and single-layer graphene by molecular beam epitaxy. The SrO layers have (001)…
Observing Atomic Collapse Resonances in Artificial Nuclei on Graphene
Yang Wang, Dillon Wong, Andrey V. Shytov +10
Relativistic quantum mechanics predicts that when the charge of a superheavy atomic nucleus surpasses a certain threshold, the resulting strong Coulomb field causes an unusual atom…
Exchange-driven spin relaxation in ferromagnet/oxide/semiconductor heterostructures
Yu-Sheng Ou, Yi-Hsin Chiu, N. J. Harmon +6
We investigate electron spin relaxation in GaAs in the proximity of a Fe/MgO layer using spin-resolved optical pump-probe spectroscopy, revealing a strong dependence of the spin re…
Correlating spin transport and electrode magnetization in a graphene spin valve: simultaneous magnetic microscopy and non-local measurements
Andrew J. Berger, Michael R. Page, Hua Wen +4
Using simultaneous magnetic force microscopy (MFM) and transport measurements of a graphene spin valve, we correlate the non-local spin signal with the magnetization of the device…