Determining the sign of g factor via time-resolved Kerr rotation spectroscopy with a rotatable magnetic field

doi:10.1088/1674-1056/20/8/087503

Abstract Time-resolved Kerr rotation spectroscopy is used to determine the sign of the g factor of carriers in a semiconductor material, with the help of a rotatable magnetic field in the plane of the sample. The spin precession signal of carriers at a fixed time delay is measured as a function of the orientation of the magnetic field with a fixed strength B. The signal has a sine-like form and its phase determines the sign of the g factor of carriers. As a natural extension of previous methods to measure the (time-resolved) photoluminescence or time-resolved Kerr rotation signal as a function of the magnetic field strength with a fixed orientation, such a method gives the correct sign of the g factor of electrons in GaAs. Furthermore, the sign of carriers in a (Ga, Mn)As magnetic semiconductor is also found to be negative.

Keywords: g factor time-resolved Kerr rotation gallium arsenide rotatable magnetic field

Received: 22 December 2010
Revised: 17 April 2011
Accepted manuscript online:

PACS:	75.40.Gb	(Dynamic properties?)
	76.50.+g	(Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)
	75.90.+w	(Other topics in magnetic properties and materials)
	78.67.-n	(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)

Fund: Project supported by the National Basic Research Program of China (Grant No. 2009CB929301) and the National Natural Science Foundation of China (Grant No. 10911130232).

Cite this article:

Gu Xiao-Fang(谷晓芳), Qian Xuan(钱轩), Ji Yang(姬扬), Chen Lin(陈林), and Zhao Jian-Hua(赵建华) Determining the sign of g factor via time-resolved Kerr rotation spectroscopy with a rotatable magnetic field 2011 Chin. Phys. B 20 087503

[1]	Awschalom D D, Loss D and Samarth N 2002 Semiconductor Spintronics and Quantum Computation (Berlin: Springer) 107 152
[2]	Awschalom D D and Flatté M E 2007 Nat. Phys. 3 153
[3]	vZuti I, Fabian J and Sarma S D 2004 Rev. Mod. Phys. 76 323
[4]	Dyakonov M I 2008 Spin Physics in Semiconductors (Berlin: Springer) p. 1
[5]	Wu M W, Jiang J H and Weng M Q 2010 Phys. Rep. 493 61
[6]	Salis G, Kato Y, Ensslin K, Driscoll D C, Gossard A C and Awschalom D D 2007 Nature 414 619
[7]	Li F Z and Li Z M 2002 Chin. Phys. 11 940
[8]	Elezzabi A Y and Freeman M R 1996 Appl. Phys. Lett. 68 3546
[9]	Syperek M, Yakovlev D R, Greilich A, Misiewicz J, Bayer M, Reuter D and Wieck A K 2007 Phys. Rev. Lett. 99 187401
[10]	Snelling M J, Flinn G P, Plaut A S, Harley R T, Tropper A C, Eccleston R and Philips C C 1991 Phys. Rev. B 44 11345
[11]	Snelling M J, Blackwood E, Mcdonagh C J, Harley R T and Foxon C T B 1992 Phys. Rev. B 45 3922
[12]	Kalevich V K, Ivchenko E L, Shiryaev A Y, Afanasiev M M, Egorov A Y, Ikezawa M and Masumoto Y 2008 Semicond. Sci. Technol. 23 114008
[13]	Malinowski A, Guerrier D J, Traynor N J and Harley R T 1999 Phys. Rev. B 60 7728
[14]	Kalevich V K, Zakharchenya B P, Kavokin K V, Petrov A V, Jeune P L, Marie X, Robart D, Amand T, Barrau J and Brousseau M 1997 Phys. Solid State 39 681
[15]	Yang C L, Dai J F, Ge W K and Cui X D 2010 Appl. Phys. Lett. 96 152109
[16]	Luo H H, Qian X, Ruan X Z and Ji Y 2009 Phys. Rev. B 80 193301
[17]	Qian X, Gu X F and Ji Y 2010 Rev. Sci. Instrum. 81 106106
[18]	Zhu Y G, Zhang X H, Li T, Chen L, Lu J and Zhao J H 2009 Appl. Phys. Lett. 94 142109
[19]	Zhou R, Sun B Q, Ruan X Z, Gan H D, Ji Y, Wang W Z, Zhao J H 2008 Acta Phys. Sin. 57 5244 (in Chinese)
[20]	Hopkins M A, Nicholas R J, Pfeffer P, Zawadzki W, Gauthier D, Portal J C and DiForte-Poisson M A 1987 Semicond. Sci. Technol. 2 568
[21]	Xu H H, Jiao Z X, Liu X D, Lei L, Wen J H, Lin W Z and Lai T S 2006 Acta Phys. Sin. 55 2618 (in Chinese)

[1]

Spin depolarization dynamics of WSe₂ bilayer
Binghui Niu(牛秉慧), Jialiang Ye(叶加良), Ting Li(李婷), Ying Li(李莹), Xinhui Zhang(张新惠). Chin. Phys. B, 2018, 27(5): 057202.

[2]

Two-dimensional transport and strong spin-orbit interaction in SrMnSb₂
Jiwei Ling(凌霁玮), Yanwen Liu(刘彦闻), Zhao Jin(金昭), Sha Huang(黄沙), Weiyi Wang(王伟懿), Cheng Zhang(张成), Xiang Yuan(袁翔), Shanshan Liu(刘姗姗), Enze Zhang(张恩泽), Ce Huang(黄策), Raman Sankar, Fang-Cheng Chou, Zhengcai Xia(夏正才), Faxian Xiu(修发贤). Chin. Phys. B, 2018, 27(1): 017504.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Metrics
Related Articles

Determining the sign of g factor via time-resolved Kerr rotation spectroscopy with a rotatable magnetic field

Cite this article:

Online attention