Gustin, C.
Faniel, Sébastien
[UCL]
Hackens, Benoît
[UCL]
Melinte, Sorin
[UCL]
Shayegan, M.
Bayot, Vincent
[UCL]
Using two-dimensional electron gases (2DEGs) confined to wide and narrow quantum wells, we study the magnetoconductance of ballistic quantum dots as a function of the well width and the tilt angle of the magnetic field B with respect to the 2DEG. Both the wide and narrow quantum well dots feature magnetoconductance fluctuations (MCFs) at intermediate tilt angles, due to the finite thickness of the electron layer and the field-induced orbital effect. As B approaches a strictly parallel configuration, a saturation of the MCFs' spectral distribution is observed, combined with the persistence of a limited number of frequency components in the case of the narrow quantum well dot. It is found that the onset of saturation strongly depends on the width of the confining well. Using the results of self-consistent Poisson-Schrodinger simulations, the magnetoconductance is rescaled as a function of the Fermi level in the 2DEG. We perform a power spectrum analysis of the parallel field-induced MCFs in the energy space and find a good agreement with theoretical predictions.
- Marcus C. M., Rimberg A. J., Westervelt R. M., Hopkins P. F., Gossard A. C., Conductance fluctuations and chaotic scattering in ballistic microstructures, 10.1103/physrevlett.69.506
- Huibers A. G., Patel S. R., Marcus C. M., Brouwer P. W., Duruöz C. I., Harris J. S., Distributions of the Conductance and its Parametric Derivatives in Quantum Dots, 10.1103/physrevlett.81.1917
- Taylor R. P., Newbury R., Sachrajda A. S., Feng Y., Coleridge P. T., Dettmann C., Zhu Ningjia, Guo Hong, Delage A., Kelly P. J., Wasilewski Z., Self-Similar Magnetoresistance of a Semiconductor Sinai Billiard, 10.1103/physrevlett.78.1952
- Ferry D. K., Akis R., Bird J. P., Einselection in Action: Decoherence and Pointer States in Open Quantum Dots, 10.1103/physrevlett.93.026803
- R. Ketzmerick, Phys. Rev. B, 54, 10 (1996)
- de Moura Alessandro P. S., Lai Ying-Cheng, Akis Richard, Bird Jonathan P., Ferry David K., Tunneling and Nonhyperbolicity in Quantum Dots, 10.1103/physrevlett.88.236804
- Beenakker C. W. J., Random-matrix theory of quantum transport, 10.1103/revmodphys.69.731
- Folk J. A., Patel S. R., Birnbaum K. M., Marcus C. M., Duruöz C. I., Harris J. S., Spin Degeneracy and Conductance Fluctuations in Open Quantum Dots, 10.1103/physrevlett.86.2102
- Halperin B. I., Stern Ady, Oreg Yuval, Cremers J. N. H. J., Folk J. A., Marcus C. M., Spin-Orbit Effects in a GaAs Quantum Dot in a Parallel Magnetic Field, 10.1103/physrevlett.86.2106
- Aleiner I., Fal'ko Vladimir, Spin-Orbit Coupling Effects on Quantum Transport in Lateral Semiconductor Dots, 10.1103/physrevlett.87.256801
- Brouwer P. W., Cremers J. N. H. J., Halperin B. I., Weak localization and conductance fluctuations of a chaotic quantum dot with tunable spin-orbit coupling, 10.1103/physrevb.65.081302
- Meyer Julia S., Altland Alexander, Altshuler B. L., Quantum Transport in Parallel Magnetic Fields: A Realization of the Berry-Robnik Symmetry Phenomenon, 10.1103/physrevlett.89.206601
- Fal’ko Vladimir I., Jungwirth Tomas, Orbital effect of an in-plane magnetic field on quantum transport in chaotic lateral dots, 10.1103/physrevb.65.081306
- Cremers Jan-Hein, Brouwer Piet W., Fal’ko Vladimir I., Weak localization and conductance fluctuations in a quantum dot with parallel magnetic field and spin-orbit scattering, 10.1103/physrevb.68.125329
- Zumbühl D. M., Miller J. B., Marcus C. M., Fal’ko V. I., Jungwirth T., Harris J. S., Orbital effects of in-plane magnetic fields probed by mesoscopic conductance fluctuations, 10.1103/physrevb.69.121305
- Gustin C., Faniel S., Hackens B., Melinte S., Shayegan M., Bayot V., Parallel magnetic-field-induced conductance fluctuations in one- and two-subband ballistic quantum dots, 10.1103/physrevb.68.241305
- Suen Y. W., Jo J., Santos M. B., Engel L. W., Hwang S. W., Shayegan M., Missing integral quantum Hall effect in a wide single quantum well, 10.1103/physrevb.44.5947
- Lay T. S., Jungwirth T., Smrčka L., Shayegan M., One-component to two-component transition of theν=2/3fractional quantum Hall effect in a wide quantum well induced by an in-plane magnetic field, 10.1103/physrevb.56.r7092
- Fromhold T. M., Eaves L., Sheard F. W., Leadbeater M. L., Foster T. J., Main P. C., Magnetotunneling spectroscopy of a quantum well in the regime of classical chaos, 10.1103/physrevlett.72.2608
- Fromhold T. M., Wilkinson P. B., Sheard F. W., Eaves L., Miao J., Edwards G., Manifestations of Classical Chaos in the Energy Level Spectrum of a Quantum Well, 10.1103/physrevlett.75.1142
- Jungwirth T, Smrcka L, Self-consistent electron subbands of GaAs/AlGaAs heterostructures in magnetic fields parallel to the interface, 10.1088/0953-8984/5/15/001
- J. M. Heisz, Phys. Rev. B, 53, 13 (1996)
- Jalabert Rodolfo A., Baranger Harold U., Stone A. Douglas, Conductance fluctuations in the ballistic regime: A probe of quantum chaos?, 10.1103/physrevlett.65.2442
- Spector J., Stormer H. L., Baldwin K. W., Pfeiffer L. N., West K. W., Electron focusing in two‐dimensional systems by means of an electrostatic lens, 10.1063/1.102538
- Houten H. van, Wees B. J. van, Mooij J. E, Beenakker C. W. J, Williamson J. G, Foxon C. T, Coherent Electron Focussing in a Two-Dimensional Electron Gas, 10.1209/0295-5075/5/8/010
- Hackens B., Delfosse F., Faniel S., Gustin C., Boutry H., Wallart X., Bollaert S., Cappy A., Bayot V., Long dephasing time and high-temperature conductance fluctuations in an open InGaAs quantum dot, 10.1103/physrevb.66.241305
- Heremans J., Fuller B. K., Thrush C. M., Partin D. L., Temperature dependence of electron focusing inIn1−xGaxAs/InP heterojunctions, 10.1103/physrevb.52.5767
- Clarke R. M., Chan I. H., Marcus C. M., Duruöz C. I., Harris J. S., Campman K., Gossard A. C., Temperature dependence of phase breaking in ballistic quantum dots, 10.1103/physrevb.52.2656
- Frahm K, Crossover of Magnetoconductance Autocorrelation for a Ballistic Chaotic Quantum Dot, 10.1209/0295-5075/30/8/003
- Huibers A. G., Switkes M., Marcus C. M., Campman K., Gossard A. C., Dephasing in Open Quantum Dots, 10.1103/physrevlett.81.200
- Pivin D. P., Andresen A., Bird J. P., Ferry D. K., Saturation of Phase Breaking in an Open Ballistic Quantum Dot, 10.1103/physrevlett.82.4687
- Büttiker M., Role of quantum coherence in series resistors, 10.1103/physrevb.33.3020
- Yacoby A, Heiblum M, Shtrikman H, Umansky V, Mahalu D, Dephasing of ballistic electrons as a function of temperature and carrier density, 10.1088/0268-1242/9/5s/137
- Sivan U, Imry Y, Aronov A. G, Quasi-Particle Lifetime in a Quantum Dot, 10.1209/0295-5075/28/2/007
- Englert Th., Maan J.C., Tsui D.C., Gossard A.C., A study of intersubband scattering in GaAs/AlxGa1−xAs heterostructures by means of a parallel magnetic field, 10.1016/0038-1098(83)90974-2
- Salis G., Heinzel T., Ensslin K., Homan O. J., Bächtold W., Maranowski K., Gossard A. C., Mode spectroscopy and level coupling in ballistic electron waveguides, 10.1103/physrevb.60.7756
- Shayegan M., Sajoto T., Santos M., Silvestre C., Realization of a quasi‐three‐dimensional modulation‐doped semiconductor structure, 10.1063/1.99834
- Chan I. H., Clarke R. M., Marcus C. M., Campman K., Gossard A. C., Ballistic Conductance Fluctuations in Shape Space, 10.1103/physrevlett.74.3876
- Weidenmüller Hans A., Scattering theory and conductance fluctuations in mesoscopic systems, 10.1016/0378-4371(90)90042-q
- Stern Frank, Howard W. E., Properties of Semiconductor Surface Inversion Layers in the Electric Quantum Limit, 10.1103/physrev.163.816
- S. Nagaraja, Phys. Rev. B, 56, 15 (1997)
- Heisz J M, Zaremba E, Electronic structure of GaAs-AlGaAs heterojunctions in parallel magnetic fields, 10.1088/0268-1242/8/4/016
- Smreka L, Jungwirth T, The single-layer/bilayer transition of electron systems in AlGaAs/GaAs/AlGaAs quantum wells subject to in-plane magnetic fields, 10.1088/0953-8984/7/19/006
- Perdew J. P., Zunger Alex, Self-interaction correction to density-functional approximations for many-electron systems, 10.1103/physrevb.23.5048
- Ceperley D. M., Alder B. J., Ground State of the Electron Gas by a Stochastic Method, 10.1103/physrevlett.45.566
- C. M. Wolfe, Physical Properties of Semiconductors (1989)
- Simserides C D, The density of states and the electron concentration of a double-heterojunction system subjected to an in-plane magnetic field, 10.1088/0953-8984/11/26/314
- Ando Tsuneya, Hole Subband at GaAs/AlGaAs Heterojunctions and Quantum Wells, 10.1143/jpsj.54.1528
- Keller M.W., Millo O., Mittal A., Prober D.E., Sacks R.N., Magnetotransport in a chaotic scattering cavity with tunable electron density, 10.1016/0039-6028(94)90943-1
- K. Efetov, Supersymmetry in Disorder and Chaos (1997)
- Lu J. P., Shayegan M., Ballistic transport in a two-subband two-dimensional electron system, 10.1103/physrevb.58.1138
Bibliographic reference |
Gustin, C. ; Faniel, Sébastien ; Hackens, Benoît ; Melinte, Sorin ; Shayegan, M. ; et. al. Orbital effect, subband depopulation, and conductance fluctuations in ballistic quantum dots under a tilted magnetic field.. In: Physical Review B, Condensed matter and materials physics, Vol. 71, no. 15, p. 155314(12) (2005) |
Permanent URL |
http://hdl.handle.net/2078.1/39380 |