采用基于密度泛函理论(DFT)的平面波赝势(PWPP)方法和全势线性缀加平面波(FPLAPW)方法研究了Cr掺杂半导体CdTe的电子结构和磁性.通过对自旋极化的态密度、磁矩以及铁磁态和反铁磁态的总能量的分析,理论预测到Cr掺杂半导体CdTe是一个半金属铁磁体,其在半导体自旋电子学中应该有一定的应用.
参考文献
| [1] | de Groot R A;Mueller F M;van Engen P G et al.New class of materials:half-metallic ferromagnets[J].Physical Review Letters,1983,50:2024. |
| [2] | Kobayashi K I;Kimura I;Sawada H et al.Room-temperature magnetoresistance in an oxide material with an ordered double-perovskite structure[J].Nature,1998,395:677. |
| [3] | Lewis SP.;Sasaki T.;Allen PB. .BAND STRUCTURE AND TRANSPORT PROPERTIES OF CRO2[J].Physical Review.B.Condensed Matter,1997(16):10253-10260. |
| [4] | Jedema FJ;Filip AT;van Wees BJ .Electrical spin injection and accumulation at room temperature in anall-metal mesoscopic spin valve[J].Nature,2001(6826):345-348. |
| [5] | Liu B G .Robust half-metallic ferromagnetism in zinc-blende CrSb[J].Physical Review B:Condensed Matter,2000,67:172411. |
| [6] | Xu YQ.;Liu BG.;Pettifor DG. .Half-metallic ferromagnetism of MnBi in the zinc-blende structure - art. no. 184435[J].Physical review, B. Condensed matter and materials physics,2002(18):4435-0. |
| [7] | Yao KL;Gao GY;Liu ZL;Zhu L .Half-metallic ferromagnetism of zinc-blende CrS and CrP: a first-principles pseudopotential study[J].Solid State Communications,2005(5):301-304. |
| [8] | Kronik L.;Jain M.;Chelikowsky JR. .Electronic structure and spin polarization of MnxGa1-xN - art. no. 041203[J].Physical Review.B.Condensed Matter,2002(4):1203-0. |
| [9] | Picozzi S.;Shishidou T.;Freeman AJ.;Delley B. .First-principles prediction of half-metallic ferromagnetic semiconductors: V- and Cr-doped BeTe - art. no. 165203[J].Physical review, B. Condensed matter and materials physics,2003(16):5203-0. |
| [10] | Overberg M E;Abemathy C R;Pearton S J et al.Indication of ferromagnetism in molecular-beam-epitaxy-derived N-type GaMnN[J].Applied Physics Letters,2001,79:1312. |
| [11] | Munekata H;Ohno H;von Molnar S et al.Diluted magnetic Ⅲ-Ⅴ semiconductors[J].Physical Review Letters,1989,63:1849. |
| [12] | 刘恩科;朱秉升;罗晋生.半导体物理学[M].北京:电子工业出版社,2003:445. |
| [13] | Segall MD.;Lindan PJD.;Probert MJ.;Pickard CJ.;Hasnip PJ.;Clark SJ. Payne MC. .First-principles simulation: ideas, illustrations and the CASTEP code[J].Journal of Physics. Condensed Matter,2002(11):2717-2744. |
| [14] | Perdew J P;Burke K;Ernzerhof M .Generalized gradient approximation made simple[J].Physical Review Letters,1996,77:3865. |
| [15] | 段鹤,陈效双,孙立忠,周孝好,陆卫.闪锌矿结构CdTe和ZnTe能带结构和有效质量的第一性原理计算[J].物理学报,2005(11):5293-5300. |
| [16] | Godby R W;Schluther M;Sham L J .Trends in self-energy operators and their corresponding exchange-correlation potentials[J].Physical Review B:Condensed Matter,1987,36:6497. |
| [17] | Pickett W E;Moodera J S .Half metallic magnets[J].Physics Today,2001,54(05):39. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%