Physical Review Letters | 2006
M. König; A. Tschetschetkin; E. M. Hankiewicz; Jairo Sinova; V. Hock; V. Daumer; M. Schäfer; C. R. Becker; H. Buhmann; L. W. Molenkamp
Ring structures fabricated from HgTe/HgCdTe quantum wells have been used to study Aharonov-Bohm type conductance oscillations as a function of Rashba spin-orbit splitting strength. We observe nonmonotonic phase changes indicating that an additional phase factor modifies the electron wave function. We associate these observations with the Aharonov-Casher effect. This is confirmed by comparison with numerical calculations of the magnetoconductance for a multichannel ring structure within the Landauer-Büttiker formalism.
Physical Review B | 2005
E. G. Novik; A. Pfeuffer-Jeschke; T. Jungwirth; V. Latussek; C. R. Becker; G. Landwehr; H. Buhmann; L. W. Molenkamp
The band structure of semimagnetic
Semiconductor Science and Technology | 2006
J Hinz; H. Buhmann; M. Schäfer; V. Hock; C. R. Becker; L. W. Molenkamp
{\mathrm{Hg}}_{1\ensuremath{-}y}{\mathrm{Mn}}_{y}\mathrm{Te}∕{\mathrm{Hg}}_{1\ensuremath{-}x}{\mathrm{Cd}}_{x}\mathrm{Te}
Physical Review B | 2005
E. G. Novik; A. Pfeuffer-Jeschke; T. Jungwirth; V. Latussek; C. R. Becker; G. Landwehr; H. Buhrnann; L. W. Molenkamp
type-III quantum wells (QWs) has been calculated using an eight-band
SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation | 1995
C. R. Becker; V. Latussek; Wolfgang Spahn; F. Goschenhofer; S. Oehling; G. Landwehr
\mathbit{k}∙\mathbit{p}
Physica E-low-dimensional Systems & Nanostructures | 2002
Y. S. Gui; J. Liu; V. Daumer; C. R. Becker; H. Buhmann; L. W. Molenkamp
model in an envelope function approach. Details of the band structure calculations are given for the Mn-free case
Applied Physics Letters | 2005
H. Buhmann; E. G. Novik; V. Daumer; J. Liu; Y. S. Gui; C. R. Becker; L. W. Molenkamp
(y=0)
SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation | 1993
C. R. Becker; V. Latussek; H. Heinke; M. M. Regnet; F. Goschenhofer; S. Einfeldt; Li He; E. Bangert; M. M. Kraus; G. Landwehr
. A mean-field approach is used to take the influence of the
Physica E-low-dimensional Systems & Nanostructures | 2000
G. Landwehr; J. Gerschütz; S. Oehling; A. Pfeuffer-Jeschke; V. Latussek; C. R. Becker
sp\text{\ensuremath{-}}d
Physica Status Solidi (c) | 2007
C. R. Becker; Christoph Brüne; M. Schäfer; Andreas Roth; H. Buhmann; L. W. Molenkamp
exchange interaction on the band structure of QWs with low Mn concentrations into account. The calculated Landau level fan diagram and the density of states of a
