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Published on: June 28, 2018
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Adatom Defect Induced Spin Polarization of Asymmetric Structures
Jia Wang1, Xuhui Liu1, Chunxu Wang1
1Jilin Normal University, College of Information Technology, Siping, 136000, China.
Chemistryopen
|February 1, 2022
Summary
Defects in carbon nanomaterials create spin polarization, essential for spintronics. This study shows that introducing adatom defects allows tuning spin polarization in asymmetric carbon structures for device applications.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanotechnology
Background:
- Spin polarization in carbon nanomaterials is key for developing spintronic devices.
- Understanding defect-induced electronic properties is crucial for material design.
Purpose of the Study:
- To investigate the electronic properties of two defect asymmetric carbon structures: Cap-(9,0)-Def[6,6] and Cap-(9,0)-Def[5,6].
- To explore how adatom defects influence spin polarization in these structures.
Main Methods:
- Utilized first-principles calculations to study electronic properties.
- Analyzed ground states, energy levels, and spin electron distribution.
- Investigated electron accumulation resulting from different adatom defects.
Main Results:
- Cap-(9,0)-Def[6,6] exhibits a sextet ground state, lower in energy than the quartet ground state of Cap-(9,0)-Def[5,6].
- A C adatom on C30 induces spin polarization, with Cap-(9,0)-Def[6,6] showing more spin electrons than Cap-(9,0)-Def[5,6].
- Different adatom defects lead to varied electron accumulation patterns.
Conclusions:
- Adatom defects can induce and control spin polarization in asymmetric carbon structures.
- The findings suggest a method for tuning spin polarization for spintronic applications by introducing defects.
Keywords:
carbon systemschemical adsorptiondensity functional theoryelectronic statesspin polarizationMore Related Videos
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