Zobrazeno 1 - 10
of 130
pro vyhledávání: '"H.P. Roeser"'
Autor:
D.T. Haslam, A.S. Nikoghosyan, M.F. von Schoenermark, F.M. Huber, M. Stepper, J.S. López, H.P. Roeser
Publikováno v:
Acta Astronautica. 69:235-239
For a 1-dimensional array of equidistant particles with equal masses the concepts of quantum harmonic oscillation (QHO) and particle-in-the-box (PiB) have been applied in a general form. It turns out that the lowest PiB energy level is lower than the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4eab1b0753ba96f99fa67e6a9917c3be
https://doi.org/10.1016/j.actaastro.2011.04.010
https://doi.org/10.1016/j.actaastro.2011.04.010
Autor:
F. Hetfleisch, J.S. López, H.P. Roeser, A.S. Nikoghosyan, M.F. von Schoenermark, M. Stepper, D.T. Haslam, F.M. Huber
Publikováno v:
Acta Astronautica. 67:546-552
Nanostructured GaAs Schottky barrier diodes are used as low noise THz heterodyne detectors. Different diodes show that the electron transport is ballistic and given by an optimized depletion thickness DDepl which is shorter than the mean free path le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74b27a901f02244d1e36c40c9fb1cc2a
https://doi.org/10.1016/j.actaastro.2010.04.014
https://doi.org/10.1016/j.actaastro.2010.04.014
Autor:
J.S. López, F.M. Huber, M.F. von Schoenermark, H.P. Roeser, J. Vernerey, D.T. Haslam, A.S. Nikoghosyan
Publikováno v:
Acta Astronautica. 65:1179-1183
The double doped unit cell of La2-ΔCa1+ΔCu2O6+δLa2-ΔCa1+ΔCu2O6+δ (LCCO-52) consists of two chemical formulas, La2CaCu2O7 and Ca3Cu2O6 which are responsible for the occurrence of superconductivity with n=2 superconducting CuO2 planes per chemica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a46c8bbc3c4eb67c0fbed1215578c765
https://doi.org/10.1016/j.actaastro.2009.03.022
https://doi.org/10.1016/j.actaastro.2009.03.022
Autor:
A. Moritz, M. Stepper, H.P. Roeser, F.M. Huber, F. Hetfleisch, M.F. von Schoenermark, A.S. Nikoghosyan
Publikováno v:
Acta Astronautica. 65:289-294
It has been demonstrated that the correlation between the doping distance and the critical transition temperature Tc for P-type HTSCs also applies to double doped N-type HTSCs. It is suggested that electron doped HTSCs also form superconducting curre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a15fd5df7b0907004397ff27998baf5d
https://doi.org/10.1016/j.actaastro.2009.01.053
https://doi.org/10.1016/j.actaastro.2009.01.053
Publikováno v:
Acta Astronautica. 64:391-394
Fluorine-doped iron-based layered LnO 1 - Δ F Δ FeAs with Ln = La , Gd, Ce, Pr, Nd, Sm shows a strong correlation between FeF2 positions and the critical transition temperature T c . It is suggested that the F-doped Fe2O2 plane serves as the superc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90de44e7fb5f1a08a69b444eccfcd626
https://doi.org/10.1016/j.actaastro.2008.07.008
https://doi.org/10.1016/j.actaastro.2008.07.008
Autor:
A.S. Nikoghosyan, F. Hetfleisch, M.F. von Schoenermark, H.P. Roeser, A. Moritz, M. Stepper, Felix Huber
Publikováno v:
Acta Astronautica. 62:733-736
A correlation has been found between the Cu 3 + -ion/oxygen deficiency positions in the CuO 2 plane and the critical transition temperature T c in the high temperature superconducting (HTSC) material YBa 2 Cu 3 O 7 - δ . Two modes are responsible fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a63dd827460f7e8606bef1fcbcb2347
https://doi.org/10.1016/j.actaastro.2008.04.004
https://doi.org/10.1016/j.actaastro.2008.04.004
Autor:
M.F. von Schoenermark, H.P. Roeser, P. Leschinski, M. Toberman, A.S. Nikoghosyan, Felix Huber
Publikováno v:
Acta Astronautica. 64:1011-1013
Oxygen deficiency in the iron-based HTSC GdFeAsO 1− δ seems to create a parallelogram shaped Fe 2+ -ion/oxygen deficiency pattern in the Fe 2 O 2 plane in c -direction. These two-dimensional nanostructures form superconducting current channels whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44015398c43b20a675204bcfa386e389
https://doi.org/10.1016/j.actaastro.2008.11.010
https://doi.org/10.1016/j.actaastro.2008.11.010
Publikováno v:
Journal of the Physical Society of Japan. 77:142-144
A correlation has been found between the critical temperature of Fe-based HT superconductors and the positions of the Fe atoms next to the doping element positions. This correlation allows for the prediction of Tc from crystal lattice constants and e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12b15176c7785feade0d2207f88182e8
https://doi.org/10.1143/jpsjs.77sc.142
https://doi.org/10.1143/jpsjs.77sc.142
Autor:
D.T. Haslam, H.P. Roeser, R.M. Martirosyan, M. Stepper, J.S. López, J.M. Chamberlain, A. S. Nikoghosyan, A. Bohr, H. S. Hakobyan
Publikováno v:
2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We present our results on THz pulse generation in the 0.1-2.5 THz band via optical rectification of femtosecond laser pulses in a tapered crystal. A simulation study for visualization of THz wave propagation in the crystal has been performed. It is s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9a767e872111d861f7cac0fbaf24db9
https://doi.org/10.1109/irmmw-thz.2013.6665777
https://doi.org/10.1109/irmmw-thz.2013.6665777
Autor:
H.P. Roeser, D.T. Haslam, M. Stepper, J.S. López, A.S. Nikoghosyan, M.F. von Schoenermark, F.M. Huber
The bond length ( x ) of transition metals Nb, V, Ta and Hg represents the shortest atomic separation in a crystal unit cell. It is suggested that there exists a strong correlation between ( x ) and the inverse of the critical superconducting transit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2031a19003a9f52f013aa608ac7544c
https://elib.dlr.de/68356/
https://elib.dlr.de/68356/
