Spin-orbit engineering of semiconductor heterostructures: A spin-sensitive quantum-phase shifter

Nguyen, T. L. Hoai; Drouhin, Henri-Jean; Wegrowe, Jean-Eric; Fishman, Guy
August 2009
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p082108
Academic Journal
In noncentrosymmetric semiconductors with zinc-blende structure grown along the [110] crystallographic direction, electrons with up- and down-spins undergo different quantum-phase shifts upon tunneling, which can be viewed as resulting from spin precession around a complex magnetic field. There is no spin filtering but a pure spin dephasing. The phase shift of the transmitted wave is proportional to the overall barrier-material thickness. We show that a device incorporating a number of resonant tunnel barriers constitutes an efficient quantum-phase shifter.


Related Articles

  • Single-mode, single-lobe operation of surface-emitting, second-order distributed feedback lasers. Lopez, J.; Witjaksono, G. // Applied Physics Letters;8/16/1999, Vol. 75 Issue 7, p885 

    Presents the realization of single-lobe, surface-emitting devices, which instead of using a chirped grating employ strongly asymmetric coating of cleaved mirror facets. Corresponding of the near-field pattern to (grating) phase shifts; Conditions under which single-lobe emission occurs.

  • Phase Separation in La—Pr Manganites and Its Evolution in a Magnetic Field. Voloshin, I. F.; Kalinov, A. V.; Savel’ev, S. E.; Fisher, L. M.; Babushkina, N. A.; Belova, L. M.; Khomskiı, D. I.; Kugel’, K. I. // JETP Letters;2/10/2000, Vol. 71 Issue 3, p106 

    The effect of the magnetic field H on the electrical resistivity p and magnetic moment M of (La[sub 0.25]Pr[sub 0.75])[sub 0.7]Ca[sub 0.3]MnO[sub 3] ceramic samples with various concentrations of [sup 16]O and [sup 18]O isotopes is studied. The behavior of ρ(H) and M(H) is characterized by an...

  • Practical phase-shifting technology will carry IC makers to geometry goals. Ajluni, Cheryl // Electronic Design;05/03/99, Vol. 47 Issue 9, p32 

    Illustrates how the phase-shifting technology will enable semiconductor companies to produce chips with decreased integrated circuits geometries. Santa Clara, California-based Numerical Technologies' development of a dual-pass phase-shifting technique; Technique that alters the light's...

  • Modulated photocarrier grating technique for diffusion length measurement in amorphous semiconductors. Hattori, K.; Koji, Y.; Fukuda, S.; Ma, W.; Okamoto, H.; Hamakawa, Y. // Journal of Applied Physics;4/15/1993, Vol. 73 Issue 8, p3846 

    Proposes a method for investigating the diffusion of photocarriers in semiconductors by the analysis of phase shift between a temporally modulated illumination grating and its inducing photocurrent. Theory of the modulated photocarrier grating technique; Diffusion length measurement in...

  • All-optical switching devices based on large nonlinear phase shifts from second harmonic generation. Assanto, Gaetano; Stegeman, George; Sheik-Bahae, Mansoor; Van Stryland, Eric // Applied Physics Letters;3/22/1993, Vol. 62 Issue 12, p1323 

    Demonstrates the use of large nonlinear phase shifts from second harmonic generation to implement all-optical switching devices. Possibility of switching without pulse break-up in a Mach-Zehnder interferometer; Pulse modulation of switching in nonlinear directional couplers.

  • Phase separation in degenerate magnetic oxide semiconductors. Nagaev, É. L. // Physics of the Solid State;Nov98, Vol. 40 Issue 11, p1873 

    A theory of mixed electronic-impurity phase separation in degenerate magnetic oxide semiconductors, including high-T[sub c] superconductors and materials with colossal magnetoresistance (CMR), is developed. Such a separation can occur in materials with excess oxygen, if they are simultaneously...

  • Stabilization of Zinc-Blende Semiconductors Through 3d Impurities and Holes. Dalpian, Gustavo M.; Su-Huai Wei // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p225 

    We propose a method to stabilize the cubic phase of semiconductors that have the hexagonal phase as the most stable one. Our approach consists of doping the host with 3d acceptors. The stabilization occurs because stronger p-d repulsion in the cubic phase shifts its valence band maximum higher...

  • Manipulating Nonlinear Emission and Cooperative Effect of CdSe/ZnS Quantum Dots by Coupling to a Silver Nanorod Complex Cavity. Fan Nan; Zi-Qiang Cheng; Ya-Lan Wang; Qing Zhang; Li Zhou; Zhong-Jian Yang; Yu-Ting Zhong; Shan Liang; Qihua Xiong; Qu-Quan Wang // Scientific Reports;5/2/2014, p1 

    Colloidal semiconductor quantum dots have three-dimensional confined excitons with large optical oscillator strength and gain. The surface plasmons of metallic nanostructures offer an efficient tool to enhance exciton-exciton coupling and excitation energy transfer at appropriate geometric...

  • Phase Information from Two-Terminal Conductance of Quantum Dot Systems. Otsuka, Tomohiro; Aikawa, Hisashi; Eto, Mikio; Khym, Gyong L.; Kang, Kicheon; Iye, Yasuhiro; Katsumoto, Shingo // AIP Conference Proceedings;2007, Vol. 893 Issue 1, p855 

    Two-terminal devices generally work as “leaky resonators” in coherent transport, which mixes up the quantum phase information from all parts of the devices, e.g., quantum dots (QDs) embedded in them. With the aid of appropriate theoretical modeling, however, we can extract important...


Read the Article


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

Try another library?
Sign out of this library

Other Topics