全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

GaMnAs的Raman光谱研究

Keywords: GaMnAs拉曼光谱等离激元与声子耦合模空穴浓度

Full-Text   Cite this paper   Add to My Lib

Abstract:

报道了磁性半导体材料GaMnAs的拉曼光谱,发现其空穴等离子体激元与LO声子振动耦合形成的CPLP模具有类LO模的偏振特性.随着Mn组分的增加,CPLP模的拉曼频率红移,通过CPLP模与耗尽层中未屏蔽的LO模的强度比计算了合金中的空穴载流子浓度.发现空穴浓度随Mn组分的增加而迅速增加.测量了不同温度下GaMnAs合金的拉曼光谱,证实合金中空穴浓度随温度的增加而增加.

References

[1]  Edmonds K W,Wang K Y,Campion R P,et al.Hall effect and hole densities in Ga1-xMnxAs[J].Appl.Physl Lett.,2002,81:3010-3012.
[2]  Limmer W,Glunk M,Mascheck,et al.Coupled plasmonLO-phonon modes in Ga1-xMnxAs[J].Phys.Rev.,2002,B66:205209.
[3]  ZHANG Guang-Yan,LANG Guo-Xiang,WANG Yu-Fang.Lattice Vibration Spectroscopy[M].Second edition.Beijing:Higher Education Press(张光寅,蓝国祥,王玉芳.晶格振动光谱学.第二版.北京:高等教育出版社),2001.
[4]  MA Bao-Shan,FAN Zai-Li,SU Fu-Hai,et al.Study on the Raman spectra of GaP nanorods synthesized within carbon nanotube templates[J].J.Infrared Millim.Waves(马宝珊,方再利,苏付海,等.纳米碳管模板法制取的GaP纳米棒拉曼光谱研究.红外与毫米波学报)2003,22(1):1-7.
[5]  JIANG De-Sheng,LIU Jian-Ping,YANG Hui.Investigations on optical properties of AIGaInN epilayers grown by mocvd[J].J.InfraredMillim.Waves(江德生,刘建平,杨辉.MOCVD生长AlGaInN外延层的光学性质研究,红外与毫米波学报),2005,24(3):193-197.
[6]  FENG Qian,WANG Feng-Xiang,HAO Yue.Comparative analysis of characteristics of GaN and GaN:Mg films grown by MOCVD[J].J.Infrared Millim.Waves (冯倩,王峰祥,郝跃.MOCVD生长GaN和GaN:Mg薄膜的对比研究.红外与毫米波报),2004,23(3):201-204.
[7]  Ohno H,Shen A,Matsukura F,et al.(Ga,Mn)As:A new diluted magnetic semiconductor based on GaAs.[J].Appl.Phys.Lett.,1996,69:363-365.
[8]  Ohno H.Making nonmagnetic semiconductors ferromagnetic.[J] Science,1998,281:951-956.
[9]  Mlayah A,Carles R,Landa G,et al.Raman study of longitudinal optical phonon-plasmon coupling and disorder effects in heavily Be-doped GaAs.[J].J.Appl.Phys.,1991,69:4064-4070.
[10]  Irmer G,Wenzel M,Monecke J.Light scattering by a multicomponent plasmon coupled with longitudinal-optical phonons:Raman spectra of p-type GaAs:Zn[J].Phys.Rev.,1997,B56:9524-9538.
[11]  DENG Jia-Jun,ZHAO Jian-hua,JIANG Chun-ping,et al.Effect of annealing on structural and magnetic properties of a thick (Ga,Mn) As layer[J].Chin.Phys.Lett.,2005,22:466-468.
[12]  LI Zhi-Feng,LU Wei.Raman Spectroscopy study on LO phonon-plasmon coupled mode in GaN thin films[J].J.InfraredMillim.Waves(李志锋,陆卫.氮化镓薄膜中LO声子-等离子体激元耦合模拉曼光谱研究.红外与毫米波学报)2003,22(1):8-12.
[13]  SHEN Xue-Chu.Spectroscopy and Optical Properties of Semiconductors[M].Second Edition.Beijing:Scientific and Technology Press(沈学础.半导体光谱和光学性质.第二版.北京:科学出版社)2002.
[14]  Seong M.J,Chun S H,Cheong H M,et al.Spectroscopic determination of hole density in the ferromagnetic semiconductor Ga1-xMnx As[J].Phys.Rev.,2002,B66,033202.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133