Anisotropic electron spin relaxation in bulk GaN

Buß, J. H.; Rudolph, J.; Natali, F.; Semond, F.; Hägele, D.
November 2009
Applied Physics Letters;11/9/2009, Vol. 95 Issue 19, p192107
Academic Journal
Electron spin dynamics in n-type c-oriented wurtzite GaN epilayers is studied by time-resolved Kerr-rotation measurements at T=80 K. The electron spin lifetime shows a sudden increase if an external magnetic field is applied in the sample plane. This enhancement is explained by anisotropic Dyakonov–Perel spin relaxation in bulk GaN as a direct consequence of the anisotropy of spin-orbit coupling in semiconductors with wurtzite structure.


Related Articles

  • Dynamic spin-spin interactions in magnetically concentrated II1-xMnxVI semiconductors: A study by high-field electron paramagnetic resonance. McCarty, A. D.; Hassan, A. K.; Brunel, L.-C.; Dziatkowski, K.; Furdyna, J. K. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08D506 

    High-field electron paramagnetic resonance (EPR) is used to investigate two magnetically concentrated II1-xMnxVI alloys, Cd1-xMnxSe and Cd1-xMnxSe, for x>0.15. Earlier EPR studies carried out between 9.0 and 35 GHz had shown that the EPR linewidths in II1-xMnxVI alloys are determined by...

  • Specific features of the anisotropy of low-temperature microwave magnetoresistivity of lightly doped p-Ge due to the presence of light and heavy holes. Veinger, A.; Zabrodskii, A.; Tisnek, T.; Goloshchapov, S. // Semiconductors;Oct2011, Vol. 45 Issue 10, p1264 

    The microwave magnetoresistivity of lightly doped (nondegenerate) p-Ge has been studied by the electron spin resonance method. This technique can be employed to record the derivative of the microwave absorption with respect to the magnetic field on the assumption that changes in this absorption...

  • Superhyperfine structure of the EPR spectra of Ce ions in Li RF ( R = Y, Lu, Tm) double fluorides. Aminov, L. K.; Ershova, A. A.; Efimov, V. N.; Korableva, S. L.; Kurkin, I. N.; Malkin, B. Z.; Rodionov, A. A. // Physics of the Solid State;Oct2010, Vol. 52 Issue 10, p2070 

    The EPR spectra of Ce impurity ions in LiYF, LiLuF, and LiTmF double-fluoride single crystals have been investigated at a frequency of ∼9.3 GHz in the temperature range 5-25 K. The effective g factors of the ground Kramers doublet of the cerium ions in three crystals are close to each other...

  • High-Field Magnetization of the Distorted Spin Frustration System Ni5(TeO3)4Br2. Her, J. L.; Suga, K.; Kindo, K.; Takeyama, S.; Berger, H.; Yang, H. D.; Matsuda, Y. H. // Journal of Low Temperature Physics;Apr2010, Vol. 159 Issue 1/2, p101 

    We performed high-field magnetization measurements, M( H), on the Ni5(TeO3)4Br2 by using a pulse magnet. The Ni2+ ions ( S = 1) of this compound form a two dimensional distorted spin frustrated system (distorted kagome lattice), and undergo a Neel transition at T N~29 K, due to the anisotropy....

  • Anisotropic electron spins in self-assembled quantum dots. Weidong Sheng // Applied Physics Letters;3/23/2009, Vol. 94 Issue 12, p123113 

    Electron g-factors in self-assembled InAs/GaAs quantum dots are studied theoretically by means of a tight-binding method. The anisotropy in the electron g-factor, induced by the band-mixing effect, is found to be much more sensitive to the chemical composition of the dot than the aspect ratio of...

  • Noncubic symmetry in Ca1-xEuxB6 (0.15<=x<=1.00): An electron-spin-resonance study. Urbano, R. R.; Pagliuso, P. G.; Rettori, C.; Schlottmann, P.; Fisk, Z.; Oseroff, S. B. // Journal of Applied Physics;4/15/2006, Vol. 99 Issue 8, p08P701 

    The Eu2+ (4f7, S=7/2) g value in Ca1-xEuxB6 (0.15<=x<=1.00) was measured by means of electron spin resonance at two frequencies (fields), 9.4 (≈3.4 kOe) and 34.4 GHz (≈12.1 kOe). The g value was found to be anisotropic and magnetic-field dependent. The amplitude of the anisotropy...

  • Continuous particle assembly in a capillary cell. Lin Xu; Neild, Adrian; Tuck Wah Ng; Fen Fen Shao // Applied Physics Letters;10/12/2009, Vol. 95 Issue 15, p153501 

    Capillary force mechanisms have the advantages of providing the motive force to move groups of particles to locations of interest while holding them in place, offering delicateness, and obviating the use external energy sources. We report a capillary force method that permits particles to remain...

  • Magnetic field tuning of hot electron resonant capture in a semiconductor device. Spasov, S.; Allison, G.; Patanè, A.; Ignatov, A.; Eaves, L.; Maude, D. K.; Hopkinson, M.; Airey, R. // Applied Physics Letters;10/1/2007, Vol. 91 Issue 14, p142104 

    We study hot-electron capture on resonant N-impurities in the dilute nitride Ga(AsN) alloy under high magnetic fields up to 23 T. We show that when the ratio of electric and magnetic fields reaches a critical value, the trajectory of conduction electrons becomes fully localized in real space;...

  • Observation of the Quantum Correction Term for the Microwave Magnetoresistance in Weakly Doped Ge. Veinger, A. I.; Zabrodskii, A. G.; Tisnek, T. V.; Goloshchapov, S. I. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p1186 

    The anomalous magnetoresistance (MR) of the interference origin was first observed in the weakly doped nongenerated n-Ge:Sb and p-Ge:Ga. Early proposed for the MR detection, the electron spin resonance technique was used for this investigation. It was found that the anomalous MR was observed in...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics