Posted in | News | Nanomagnetics

Electrical Properties of Graphene with Magnetism Could have Interesting Applications in Spintronics

A team led by the Physics Professor Michael S. Fuhrer of the UMD Center for Nanophysics and Advanced Materials at University of Maryland have devised a method to monitor magnetic properties of graphene that could lead to magnetic storage and magnetic random access memory applications.

The team has discovered that missing atoms or vacancies in graphene, display magnetic moments that react to the electrons in graphene, causing enhanced electrical resistance at low temperature, known as the Kondo effect. The research paper, "Tunable Kondo effect in graphene with defects," has appeared in the recent edition of Nature Physics.

UMD's Graphene Transistor

The effect relates to adding nano quantities of magnetic metal atoms, including iron or nickel, to a non-magnetic metal, like gold or copper. The ideal temperature for the effect in graphene with vacancies was discovered to be as high as 90 Kelvin. The temperature can be adjusted by an electrical gate voltage.

Fuhrer anticipates that vacancies in graphene could be arrayed in a particular way to lead to ferromagnetism. Singular magnetic moments can be connected through the Kondo effect making them to align in the same direction.

The result would behave like iron but be fabricated from carbon. This magnetic force could cause nanoscale sensors featuring magnetic fields. Together with graphene's electrical properties, this magnetism could be used in spintronics. Fuhrer says this could lead to defect engineering in graphene such as removing atoms in appropriate places to create the desired magnetic properties.

The effort was funded by grants received from the National Science Foundation and the Office of Naval Research.

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Chai, Cameron. (2019, February 12). Electrical Properties of Graphene with Magnetism Could have Interesting Applications in Spintronics. AZoNano. Retrieved on June 18, 2024 from https://www.azonano.com/news.aspx?newsID=22310.

  • MLA

    Chai, Cameron. "Electrical Properties of Graphene with Magnetism Could have Interesting Applications in Spintronics". AZoNano. 18 June 2024. <https://www.azonano.com/news.aspx?newsID=22310>.

  • Chicago

    Chai, Cameron. "Electrical Properties of Graphene with Magnetism Could have Interesting Applications in Spintronics". AZoNano. https://www.azonano.com/news.aspx?newsID=22310. (accessed June 18, 2024).

  • Harvard

    Chai, Cameron. 2019. Electrical Properties of Graphene with Magnetism Could have Interesting Applications in Spintronics. AZoNano, viewed 18 June 2024, https://www.azonano.com/news.aspx?newsID=22310.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type
Submit

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.