Pure spin current generation via photogalvanic effect with spatial inversion symmetry
文献类型：期刊论文
| 作者 | Tao, Xixi1,3,4; Jiang, Peng1,3; Hao, Hua3; Zheng, Xiaohong1,3,4 ; Zhang, Lei2,4; Zeng, Zhi1,3
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| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2020-08-18 |
| 卷号 | 102 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.102.081402 |
| 通讯作者 | Zheng, Xiaohong(xhzheng@theory.issp.ac.cn) |
| 英文摘要 | We propose a new idea to generate pure spin current with photogalvanic effect (PGE) by designing devices with spatial inversion symmetry based on two-dimensional spin semiconducting materials. Due to the preservation of spatial inversion symmetry, the electric current generated by the PGE must be zero. However, finite spin-dependent current I-up arrow/down arrow may still be produced. Once an amount of spin-up electrons flow into the device region from lead alpha and flow out from lead beta under light irradiation, the same amount of spin-down electrons will flow into the device region from lead beta and flow out from lead alpha, which results in I-c(alpha/beta) = I-up arrow(alpha/beta) + I-down arrow(alpha)/beta = 0 and I-s(alpha)/beta = I-up arrow(alpha)/beta-I-down arrow(alpha)/beta not equal 0 simultaneously for each lead and thus finite pure spin current arises. As a concrete example, this idea is demonstrated by calculating the PGE in a photoelectric device constructed with an armchair-edged graphene nanoribbon which is divided into two semi-infinite ribbons. The two semi-infinite ribbons are then periodically and symmetrically patterned with ferromagnetic triangle antidots in the form of "(sic)(sic)" to achieve spatial inversion symmetry of the device. We find that the pure spin current can be robustly generated, neither dependent on the photon energy and polarization/helicity angle, nor dependent on whether it is linearly, circularly, or elliptically polarized. |
| WOS关键词 | PHOTOCURRENT ; POLARIZATION ; MONOLAYER |
| 资助项目 | National Natural Science Foundation of China[11974355] ; National Natural Science Foundation of China[11704232] ; National Key R&D Program of China[2017YFA0304203] ; Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices[KF201810] ; Shanxi Province 100-Plan Talent Program[1331KSC] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000560605900004 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; National Key R&D Program of China ; Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices ; Shanxi Province 100-Plan Talent Program |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/92833]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zheng, Xiaohong |
| 作者单位 | 1.Univ Sci & Technol China, Sci Isl Branch, Grad Sch, Hefei 230026, Peoples R China 2.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 4.Shanxi Univ, Inst Laser Spect, State Key Lab Quantum Opt & Quantum Opt Devices, Taiyuan 030006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tao, Xixi,Jiang, Peng,Hao, Hua,et al. Pure spin current generation via photogalvanic effect with spatial inversion symmetry[J]. PHYSICAL REVIEW B,2020,102. |
| APA | Tao, Xixi,Jiang, Peng,Hao, Hua,Zheng, Xiaohong,Zhang, Lei,&Zeng, Zhi.(2020).Pure spin current generation via photogalvanic effect with spatial inversion symmetry.PHYSICAL REVIEW B,102. |
| MLA | Tao, Xixi,et al."Pure spin current generation via photogalvanic effect with spatial inversion symmetry".PHYSICAL REVIEW B 102(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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