{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["6"],"submitter":["Zhang SF"],"pubmed_abstract":["Electrical injection of magnetic domain walls in perpendicular magnetic anisotropy nanowire is crucial for data bit writing in domain wall-based magnetic memory and logic devices. Conventionally, the current pulse required to nucleate a domain wall is approximately ~10(12) A/m(2). Here, we demonstrate an energy efficient structure to inject domain walls. Under an applied electric potential, our proposed Π-shaped stripline generates a highly concentrated current distribution. This creates a highly localized magnetic field that quickly initiates the nucleation of a magnetic domain. The formation and motion of the resulting domain walls can then be electrically detected by means of Ta Hall bars across the nanowire. Our measurements show that the Π-shaped stripline can deterministically write a magnetic data bit in 15 ns even with a relatively low current density of 5.34 × 10(11) A/m(2). Micromagnetic simulations reveal the evolution of the domain nucleation - first, by the formation of a pair of magnetic bubbles, then followed by their rapid expansion into a single domain. Finally, we also demonstrate experimentally that our injection geometry can perform bit writing using only about 30% of the electrical energy as compared to a conventional injection line."],"journal":["Scientific reports"],"pagination":["24804"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC4838865"],"repository":["biostudies-literature"],"pubmed_title":["Highly Efficient Domain Walls Injection in Perpendicular Magnetic Anisotropy Nanowire."],"pmcid":["PMC4838865"],"pubmed_authors":["Gan WL","Zhang SF","Luo FL","Wang JB","Lew WS","Kwon J","Lim GJ"],"additional_accession":[]},"is_claimable":false,"name":"Highly Efficient Domain Walls Injection in Perpendicular Magnetic Anisotropy Nanowire.","description":"Electrical injection of magnetic domain walls in perpendicular magnetic anisotropy nanowire is crucial for data bit writing in domain wall-based magnetic memory and logic devices. Conventionally, the current pulse required to nucleate a domain wall is approximately ~10(12) A/m(2). Here, we demonstrate an energy efficient structure to inject domain walls. Under an applied electric potential, our proposed Π-shaped stripline generates a highly concentrated current distribution. This creates a highly localized magnetic field that quickly initiates the nucleation of a magnetic domain. The formation and motion of the resulting domain walls can then be electrically detected by means of Ta Hall bars across the nanowire. Our measurements show that the Π-shaped stripline can deterministically write a magnetic data bit in 15 ns even with a relatively low current density of 5.34 × 10(11) A/m(2). Micromagnetic simulations reveal the evolution of the domain nucleation - first, by the formation of a pair of magnetic bubbles, then followed by their rapid expansion into a single domain. Finally, we also demonstrate experimentally that our injection geometry can perform bit writing using only about 30% of the electrical energy as compared to a conventional injection line.","dates":{"release":"2016-01-01T00:00:00Z","publication":"2016 Apr","modification":"2025-04-22T20:00:41.347Z","creation":"2019-03-27T02:12:04Z"},"accession":"S-EPMC4838865","cross_references":{"pubmed":["27098108"],"doi":["10.1038/srep24804"]}}