Title
Fluorinated boron nitride nanotube quantum dots: A spin filter
Document Type
Article
Publication Date
7-26-2014
Abstract
Spin filtering requires a selective transmission of spin-polarized carriers. A perfect spin filter allows all majority (or minority) spin carriers to pass through a channel while blocking the minority (or majority) carriers. The quest for a novel low-dimensional metal-free magnetic material that would exhibit magnetism at a higher temperature with an excellent spin filtering property has been intensively pursued. Herein, using a first-principles approach, we demonstrate that the fluorinated boron nitride nanotube (F-BNNT) quantum dot, which is ferromagnetic in nature, can be used as a perfect spin filter with efficiency as high as 99.8%. Our calculation shows that the ferromagnetic spin ordering in F-BNNT is stable at a higher temperature. Comparison of the conductance value of the F-BNNT quantum dot with that of the pristine BNNT quantum dot reveals a significantly higher conductance in F-BNNT, which is in very good agreement with the experimental report (Tang, C., et al. J. Am. Chem. Soc.2005, 127, 6552).
Publication Title
Journal of the American Chemical Society
Recommended Citation
Dhungana, K. B.,
&
Pati, R.
(2014).
Fluorinated boron nitride nanotube quantum dots: A spin filter.
Journal of the American Chemical Society,
136(32), 11494-11498.
http://doi.org/10.1021/ja505757f
Retrieved from: https://digitalcommons.mtu.edu/physics-fp/108
Publisher's Statement
© 2014 American Chemical Society. Publisher's version of record: https://dx.doi.org/10.1021/ja505757f