Magneto-optical imaging with diluted magnetic semiconductor quantum wells

Gourdon, C.; Jeudy, V.; Menant, M.; Roditchev, D.; Tu, Le Anh; Ivchenko, E. L.; Karczewski, G.
January 2003
Applied Physics Letters;1/13/2003, Vol. 82 Issue 2, p230
Academic Journal
Heterostructures containing CdMnTe-diluted magnetic semiconductor quantum wells are proposed as magneto-optic layers (MOL) for high-resolution Faraday microscopy at low temperature. The Faraday rotation is enhanced up to 54.4 degT[sup -1] by embedding the quantum wells in a semiconductor-metal optical cavity. These MOL allowed the observation of the intermediate state pattern in a superconductor layer with spatial and magnetic resolutions of 1 µm and 10 mT, respectively.


Related Articles

  • Cathodoluminescence study of diluted magnetic semiconductor quantum well/micromagnet hybrid structures. Kossut, J.; Yamakawa, I.; Nakamura, A.; Cywin´ski, G.; Fronc, K.; Czeczott, M.; Wro´bel, J.; Kyrychenko, F.; Wojtowicz, T.; Takeyama, S. // Applied Physics Letters;9/17/2001, Vol. 79 Issue 12, p1789 

    Cathodoluminescence (CL) was studied in hybrid structures consisting of a diluted magnetic semiconductor (DMS) Cd[sub 1-x]Mn[sub x]Te (x=0.06 and 0.09) quantum well buried 300 Ã… below the surface on which Fe islands with micrometric dimensions were deposited. The CL at T=10 K collected from...

  • Exciton scattering by concentration fluctuations and projection of the spins of magnetic impurities in quantum wells in semimagnetic semiconductors. Vertsimakha, A. V.; Sugakov, V. I. // Semiconductors;May97, Vol. 31 Issue 5, p537 

    Exciton scattering by fluctuations of the concentration and the orientation of the spins of magnetic impurities and the associated broadening of excitonic bands in a quantum well with semimagnetic barriers CdMnTe/CdTe/CdMnTe have been investigated. The relaxation time is found as a function of...

  • Dilute magnetic semiconductor (Cd1-xMnxTe) quantum well laser. Bicknell, R. N.; Giles-Taylor, N. C.; Blanks, D. K.; Schetzina, J. F.; Anderson, N. G.; Laidig, W. D. // Applied Physics Letters;6/15/1985, Vol. 46 Issue 12, p1122 

    In this letter we report the first observation of stimulated emission from an optically pumped multilayer structure in which Cd1-xMnxTe, a dilute magnetic semiconductor (DMS), serves as the active quantum well material. The DMS laser structure was grown by molecular beam epitaxy with an active...

  • Magnetic ordering in GaAlAs:Mn double well structure. Boselli, M. A.; da Cunha Lima, I. C.; Ghazali, A. // Journal of Applied Physics;5/1/2000, Vol. 87 Issue 9, p6439 

    The magnetic order in the diluted magnetic semiconductor barrier of double AlAs/GaAs:Mn quantum well structures is investigated by Monte Carlo simulations. A confinement adapted RKKY mechanism is implemented for indirect exchange between Mn ions mediated by holes. It is shown that, depending on...

  • Photodegradation of Cd[sub x]Zn[sub 1-x]Se quantum wells. Haugen, G.M.; Guha, S. // Applied Physics Letters;1/16/1995, Vol. 66 Issue 3, p358 

    Examines the use of photoluminescence imaging to study photodegradation in cadmium zinc selenium quantum wells as function of beam intensity and initial defect density. Manifestation of degradation with regards to electrical transport relation; Origin of degradation defects; Observation of...

  • Ultrafast time-resolved magneto-optical imaging of all-optical switching in GdFeCo with femtosecond time-resolution and a μm spatial-resolution. Hashimoto, Y.; Khorsand, A. R.; Savoini, M.; Koene, B.; Bossini, D.; Tsukamoto, A.; Itoh, A.; Ohtsuka, Y.; Aoshima, K.; Kimel, A. V.; Kirilyuk, A.; Rasing, Th. // Review of Scientific Instruments;2014, Vol. 85 Issue 6, p1 

    We developed an ultrafast time-resolved magneto-optical (MO) imaging system with several millidegree resolution of light polarization angle, 100 fs time-resolution, and a micrometer spatial resolution. A CCD camera with about 106 pixels is used for detection and MO images with an absolute angle...

  • (Cd,Mn)Te/(Cd,Zn)Te quantum well waveguide optical isolator with wide wavelength operational bandwidth. Debnath, M. C.; Zayets, V.; Ando, K. // Applied Physics Letters;7/23/2007, Vol. 91 Issue 4, p043502 

    The authors developed a magneto-optical (Cd,Mn)Te/(Cd,Zn)Te quantum well waveguide and demonstrated that the Faraday rotation in the waveguide was slightly dependent on the wavelength. For a waveguide with a quantum well width of 20 Ã…, constant Faraday rotation and a small amount of...

  • Optical Study of Spin Injection Dynamics in Double Quantum Wells of II-VI Diluted Magnetic Semiconductors. Kayanuma, K.; Tomita, T.; Murayama, A.; Oka, Y.; Toropov, A. A.; Ivanov, S. V.; Buyanova, I. A.; Chen, W. M. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p1387 

    The spin injection process is studied in double quantum wells of ZnMnSe and ZnCdSe with a tunneling barrier by circularly-polarized transient photoluminescence spectroscopy. The result shows two types of spin injections in the time ranges of 30 and 1000 ps. The observed spin injection processes...

  • Spectroscopy and Characteristic Energies of a Spin-Polarized Hole Gas. Boukari, H.; Kossacki, P.; Ferrand, D.; Cibert, J.; Bertolini, M.; Tatarenko, S.; Gaj, J. A. // AIP Conference Proceedings;2005, Vol. 772 Issue 1, p1311 

    The giant Zeeman splitting present in a quantum well made of a diluted magnetic semiconductor allows us not only to completely polarize the hole gas it contains, but also to destabilize the charged exciton singlet state (which emits at small spin splitting) in favor of an electron-hole state...


Read the Article


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

Try another library?
Sign out of this library

Other Topics