Zobrazeno 1 - 10
of 16
pro vyhledávání: '"M. K. Welsch"'
Publikováno v:
physica status solidi (b). 245:70-76
The influence of the tunnel coupling on the steady-state photoluminescence has been studied in Cd(Mg,Mn)Te-based asymmetric double quantum wells (ADQWs) in a magnetic field up to B = 8 T. As grown structures were annealed to introduce Mn and Mg atoms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c7164746234aa9d2becc93ba180304b
https://doi.org/10.1002/pssb.200743016
https://doi.org/10.1002/pssb.200743016
Publikováno v:
Journal of Experimental and Theoretical Physics. 105:1241-1258
The exciton states in individual quantum dots prepared by the selective interdiffusion method in CdTe/CdMgTe quantum wells are studied by the methods of steady-state optical spectroscopy. The annealing-induced diffusion of Mg atoms inward to the bulk
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b6432feef97ab053c11ae781cfccb1c
https://doi.org/10.1134/s1063776107120163
https://doi.org/10.1134/s1063776107120163
Publikováno v:
Semiconductors. 41:1339-1344
Individual quantum dots are produced by selective interdiffusion between the barriers and the quantum well layer in a CdTe/CdMgTe heterostructure. The heterostructure, with a SiO2 mask preliminarily deposited onto the surface, was subjected to short-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31a9d07a6d4dd423cf2c9e24802ee727
https://doi.org/10.1134/s1063782607110127
https://doi.org/10.1134/s1063782607110127
Publikováno v:
International Journal of Nanoscience. :357-361
Exciton recombination in asymmetric CdMgTe / CdTe / CdMgTe / CdTe / CdMnTe double quantum wells (ADQW) with different barrier widths is studied in magnetic field up to 10 T. As grown structures were subjected to temperature annealing to introduce Mn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7eac9cfec985e87d5a4e31a57b6bacf9
https://doi.org/10.1142/s0219581x07004948
https://doi.org/10.1142/s0219581x07004948
Publikováno v:
JETP Letters. 84:436-440
Exciton states in a pair of strongly coupled artificial asymmetric quantum dots (QDs) have been studied in magnetic fields up to B = 8T by means of photoluminescence spectroscopy. The QD molecules have been fabricated using a selective interdiffusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59ce2b8fbcdf55576e44cc007a8fc7cf
https://doi.org/10.1134/s0021364006200069
https://doi.org/10.1134/s0021364006200069
Publikováno v:
physica status solidi (b). 243:3905-3911
Exciton photoluminescence in a pair of strongly coupled artificial asymmetric quantum dots (QDs) has been studied in a magnetic field up to 8 T. The QD molecules have been fabricated by a selective interdiffusion technique applied to asymmetric semim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26963a54c09196ba276eea23c0365881
https://doi.org/10.1002/pssb.200671505
https://doi.org/10.1002/pssb.200671505
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:
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:
T. Kümmell, M. K. Welsch, Alfred Forchel, G. Landwehr, B. König, D. Eisert, W. Ossau, C. R. Becker, Gerd Bacher
Publikováno v:
Journal of Crystal Growth. :150-153
An alternative technological approach for the realization of (Cd,Mn)Te nanostructures is presented. Focused ion beam lithography and subsequent thermal annealing are used for a lateral modulation of the bandgap, allowing both, the realization of quan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e3c17ea9a4fca361efeb7f53a97b7fe
https://doi.org/10.1016/s0022-0248(00)00052-x
https://doi.org/10.1016/s0022-0248(00)00052-x
Autor:
T. Kümmel, C. R. Becker, G. Landwehr, Gerd Bacher, W. Ossau, Alfred Forchel, M. K. Welsch, A. McDonald, B. König
Publikováno v:
physica status solidi (a). 178:359-363
Technische Physik, Experimentelle Physik III, Am Hubland, Universita¨t Wu¨rzburg,D-97074 Wu¨rzburg, Germany(Received August 30, 1999)Focused ion beam lithography and subsequent thermal annealing is used to prepare buried CdTe/Cd(Mg,Mn)Te single do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8438e37757b0ac2b8347aa41cf3a9db
https://doi.org/10.1002/1521-396x(200003)178:1<359::aid-pssa359>3.0.co
https://doi.org/10.1002/1521-396x(200003)178:1<359::aid-pssa359>3.0.co