Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbons
The magnetic and electronic properties of transition metals (TM) (TM = Sc, Ti, V, Cr, Mn, Fe, Co, and Ni) doped SnSe2 zigzag nanoribbons (ZNRs) are investigated by employing density functional theory. When an Sn atom on edge of ZNR is substituted by Sc atom, the ZNR behaves as bipolar magnetic semic...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-08-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379722004077 |
| _version_ | 1818097077024980992 |
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| author | Ming-Xing Zhai Xiaoqing Liang Dong-Xuan Li |
| author_facet | Ming-Xing Zhai Xiaoqing Liang Dong-Xuan Li |
| author_sort | Ming-Xing Zhai |
| collection | DOAJ |
| description | The magnetic and electronic properties of transition metals (TM) (TM = Sc, Ti, V, Cr, Mn, Fe, Co, and Ni) doped SnSe2 zigzag nanoribbons (ZNRs) are investigated by employing density functional theory. When an Sn atom on edge of ZNR is substituted by Sc atom, the ZNR behaves as bipolar magnetic semiconductors with 100% spin polarization of valence band and conduction band carriers, where the spin-polarization direction can easily be switched by an external electric field. The Cr-doped ZNR is a spin-gapless semiconductor in which the valence band and conduction band in the spin-up channel touch each other at Fermi energy. The others either are usual magnetic semiconductors or nonmagnetic semiconductors. When two Sn atoms on the edge are substituted by Cr atoms, it is observed that the SnSe2 nanoribbon exhibits half-metallic behavior. Either one Cr dopant or two Cr dopants on edge, the nanoribbons have stable 100% spin polarization of conduction carriers at a wide energy range. These findings demonstrate that the Sc-, Cr-, and 2Cr-doped SnSe2 zigzag nanoribbons are excellent candidates for spintronics. |
| first_indexed | 2024-12-10T23:14:47Z |
| format | Article |
| id | doaj.art-fd87897d94974ecbbd05c3588baa7bc7 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-10T23:14:47Z |
| publishDate | 2022-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-fd87897d94974ecbbd05c3588baa7bc72022-12-22T01:29:52ZengElsevierResults in Physics2211-37972022-08-0139105733Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbonsMing-Xing Zhai0Xiaoqing Liang1Dong-Xuan Li2Corresponding author.; Department of Physics, Taizhou University, Taizhou 318000, Zhejiang, ChinaDepartment of Physics, Taizhou University, Taizhou 318000, Zhejiang, ChinaDepartment of Physics, Taizhou University, Taizhou 318000, Zhejiang, ChinaThe magnetic and electronic properties of transition metals (TM) (TM = Sc, Ti, V, Cr, Mn, Fe, Co, and Ni) doped SnSe2 zigzag nanoribbons (ZNRs) are investigated by employing density functional theory. When an Sn atom on edge of ZNR is substituted by Sc atom, the ZNR behaves as bipolar magnetic semiconductors with 100% spin polarization of valence band and conduction band carriers, where the spin-polarization direction can easily be switched by an external electric field. The Cr-doped ZNR is a spin-gapless semiconductor in which the valence band and conduction band in the spin-up channel touch each other at Fermi energy. The others either are usual magnetic semiconductors or nonmagnetic semiconductors. When two Sn atoms on the edge are substituted by Cr atoms, it is observed that the SnSe2 nanoribbon exhibits half-metallic behavior. Either one Cr dopant or two Cr dopants on edge, the nanoribbons have stable 100% spin polarization of conduction carriers at a wide energy range. These findings demonstrate that the Sc-, Cr-, and 2Cr-doped SnSe2 zigzag nanoribbons are excellent candidates for spintronics.http://www.sciencedirect.com/science/article/pii/S2211379722004077SnSe2 zigzag nanoribbonsTransition metal dopantsBipolar magnetic semiconductorHalf-metalDensity functional theory |
| spellingShingle | Ming-Xing Zhai Xiaoqing Liang Dong-Xuan Li Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbons Results in Physics SnSe2 zigzag nanoribbons Transition metal dopants Bipolar magnetic semiconductor Half-metal Density functional theory |
| title | Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbons |
| title_full | Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbons |
| title_fullStr | Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbons |
| title_full_unstemmed | Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbons |
| title_short | Bipolar magnetic semiconductors and half-metals in transition metals doped SnSe2 zigzag nanoribbons |
| title_sort | bipolar magnetic semiconductors and half metals in transition metals doped snse2 zigzag nanoribbons |
| topic | SnSe2 zigzag nanoribbons Transition metal dopants Bipolar magnetic semiconductor Half-metal Density functional theory |
| url | http://www.sciencedirect.com/science/article/pii/S2211379722004077 |
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