Zobrazeno 1 - 10
of 44
pro vyhledávání: '"H. Schömig"'
Publikováno v:
JETP Letters. 85:323-327
The magnetooptics and picosecond dynamics of the radiative recombination of excitons in self-assembled semimagnetic CdSe/ZnMnSe quantum dots is studied at low temperatures. The behavior of individual quantum dots in a magnetic field and with an incre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03e3f8713ec6135cabc40e6abe8e4546
https://doi.org/10.1134/s0021364007070041
https://doi.org/10.1134/s0021364007070041
Autor:
Gerd Bacher, T. L. Reinecke, A. A. Maksimov, A. V. Chernenko, Michael Scheibner, V. D. Kulakovskii, P. S. Dorozhkin, T. Kennedy, H. Schömig, Alfred Forchel
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 26:37-44
Self-assembled Cd(Mn)Se/Zn(Mn)Se quantum dots have been investigated by means of spatially and time-resolved magneto-optical spectroscopy. In such quasi zero-dimensional diluted magnetic semiconductors, the exchange interaction couples the spins of o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c52895590bf5ad63c00e3ffa8bfa28a
https://doi.org/10.1016/j.physe.2004.08.019
https://doi.org/10.1016/j.physe.2004.08.019
Autor:
M. K. Welsch, Laurens W. Molenkamp, Alfred Forchel, S. V. Zaitsev, Gerd Bacher, C. R. Becker, H. Schömig
Publikováno v:
physica status solidi (b). 238:313-316
We report on a new approach for preparing single pairs of quantum dots with controllable interdot coupling. Starting from a double quantum well heterostructure, a selective intermixing technique was applied to define pairs of vertically stacked singl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35c85e769e97ceb4fe008195345b5cca
https://doi.org/10.1002/pssb.200303054
https://doi.org/10.1002/pssb.200303054
Autor:
Alfred Forchel, Margaret Dobrowolska, H. Schömig, Jacek K. Furdyna, Gerd Bacher, Seong Rae Lee
Publikováno v:
Journal of Superconductivity. 16:379-382
The photoluminescene signal of individual semimagnetic CdSe–Zn0.75Mn0.25Se quantum dots is used to study the magnetization of the Mn2+ spin system in the exchange field of a single exciton. We demonstrate that by increasing the laser excitation pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffa91cccb37a147a6a4b969eff1f40b8
https://doi.org/10.1023/a:1023694210050
https://doi.org/10.1023/a:1023694210050
Autor:
Jochen Seufert, C. R. Becker, Laurens W. Molenkamp, Alfred Forchel, A. A. Maksimov, T. Passow, Gerd Bacher, M. Rambach, Detlef Hommel, V. D. Kulakovskii, H. Schömig
Publikováno v:
physica status solidi (b). 229:415-422
We demonstrate the ability to control the eigenstates in single quantum dots by applying well-defined external fields. Electric fields oriented in-plane as well as perpendicular to the disc-shaped dots allow a modification of the spatial part of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01e40e3ed6c11339e7b799e2421d7f0d
https://doi.org/10.1002/1521-3951(200201)229:1<415::aid-pssb415>3.0.co
https://doi.org/10.1002/1521-3951(200201)229:1<415::aid-pssb415>3.0.co
Autor:
V. D. Kulakovskii, Gerd Bacher, Alfred Forchel, A. A. Maksimov, C. R. Becker, G. Landwehr, A. McDonald, M. K. Welsch, H. Schömig, Laurens W. Molenkamp
Publikováno v:
physica status solidi (b). 224:573-577
Single diluted magnetic semiconductor (DMS) quantum dots are studied by means of photoluminescence spectroscopy and magnetoluminescence. The sp-d exchange interaction between a single electron-hole pair and roughly 100 Mn spins within the dot is demo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::291c720124497c5352780acdc8123da6
https://doi.org/10.1002/1521-3951(200103)224:2<573::aid-pssb573>3.0.co
https://doi.org/10.1002/1521-3951(200103)224:2<573::aid-pssb573>3.0.co
Autor:
S. Halm, H. Schömig, W. Kipferl, Christian H. Back, Fritz Henneberger, Gerd Bacher, Alfred Forchel, Joachim Puls
Publikováno v:
Journal of Applied Physics. 95:7411-7413
We present a magneto-optical approach for probing the optical response of a diluted magnetic semiconductor to the fringe field of nanostructured ferromagnets with sub-μm spatial resolution. Scanning across a CdZnMnSe/ZnSe quantum well covered by a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c3680bfdd9ea9b8cf14de12bbd5b459
https://doi.org/10.1063/1.1652392
https://doi.org/10.1063/1.1652392
Publikováno v:
Applied Physics Letters. 84:2826-2828
Hybrid structures consisting of submicron ferromagnetic dysprosium wires on a diluted magnetic semiconductor quantum well have been prepared and investigated by micro-magnetoluminescence spectroscopy. A magnetic field dependent redshift of the semico
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::973cdcaf068dce8d756519ba9d4f1d24
https://doi.org/10.1063/1.1695199
https://doi.org/10.1063/1.1695199
Autor:
M. K. Welsch, S. V. Zaitsev, V. D. Kulakovskii, Jacek K. Furdyna, W. Ossau, B. König, H. Schömig, Alfred Forchel, Seongbok Lee, Margaret Dobrowolska, Gerd Bacher
Publikováno v:
Applied Physics Letters. 79:524-526
Optical single dot studies in wide-band gap diluted magnetic CdSe/ZnMnSe quantum dots have been performed. Due to the sample design, the photoluminescence energy of the quantum dot signal is energetically below the internal Mn2+ transition, resulting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b2a4ad49587462c978799fa678882d4
https://doi.org/10.1063/1.1387256
https://doi.org/10.1063/1.1387256
Autor:
Laurens W. Molenkamp, Gerd Bacher, H. Schömig, M. Legge, B. König, Alfred Forchel, C. R. Becker, W. Ossau, M. K. Welsch
Publikováno v:
Applied Physics Letters. 78:2937-2939
Buried CdTe/CdMgTe quantum wires with a lateral confinement potential of about 290 meV have been realized. Using electron beam lithography, SiO2 stripes are defined on a single quantum well sample and a subsequent 2 h annealing step in a Zn atmospher
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df7fedb412e96cda66b5fdcb7062c55d
https://doi.org/10.1063/1.1360226
https://doi.org/10.1063/1.1360226