Zobrazeno 1 - 10
of 126
pro vyhledávání: '"POLLMANN, E."'
Autor:
Urban, F., Giubileo, F., Grillo, A., Iemmo, L., Luongo, G., Passacantando, M., Foller, T., Madauß, L., Pollmann, E., Geller, M. P., Oing, D., Schleberger, M., Di Bartolomeo, A.
Publikováno v:
2019 2D Materials 6 045049
We study the effect of electric stress, gas pressure and gas type on the hysteresis in the transfer characteristics of monolayer molybdenum disulfide (MoS2) field effect transistors. The presence of defects and point vacancies in the MoS2 crystal str
Externí odkaz:
http://arxiv.org/abs/2306.15353
Autor:
Pollmann, E., Maas, A., Marnold, D., Hucht, A., Neubieser, R., Stief, M., Madauß, L., Schleberger, M.
Publikováno v:
2D Materials 9, 035001 (2022)
The preparation of two-dimensional transition metal dichalcogenides on an industrially relevant scale will rely heavily on bottom-up methods such as chemical vapour deposition. In order to obtain sufficiently large quantities of high-quality material
Externí odkaz:
http://arxiv.org/abs/2201.08085
Autor:
Pollmann, E., Madauß, L., Schumacher, S., Kumar, U., Heuvel, F., Ende, C. vom, Yilmaz, S., Gündörmüs, S., Schleberger, M.
Innovative applications based on two-dimensional solids require cost-effective fabrication processes resulting in large areas of high quality materials. Chemical vapour deposition is among the most promising methods to fulfill these requirements. How
Externí odkaz:
http://arxiv.org/abs/2006.05789
Autor:
Pelella, A., Kharsah, O., Grillo, A., Urban, F., Passacantando, M., Giubileo, F., Iemmo, L., Sleziona, S., Pollmann, E., Madauß, L., Schleberger, M., Di Bartolomeo, A.
This work deals with the electron beam irradiation of the Schottky metal contacts in monolayer molybdenum disulfide (MoS$_2$) field-effect transistors (FETs). We show that the exposure of the Ti/Au source/drain leads to an electron beam improves the
Externí odkaz:
http://arxiv.org/abs/2004.00903
Autor:
Naze, Y., Rauw, G., Flo, J . Guarro, De Bruin, A., Garde, O., Thizy, O., Houpert, F., Pollmann, E., Sawicki, C. J., Leonardi, M., Moll, M., Quandt, C. T., Berardi, P., Lester, T., Fosanelli, P., Favaro, A., Terry, J. N., Graham, K., Mauclaire, B., Bohlsen, T., Pujol, M., Bertrand, E., Bryssinck, E., Desnoux, V., Lailly, P., Montier, J., Mannucci, M., Montigiani, N., Stiewing, A., Daglen, J., Kreider, C., Lemoult, T., Rodda, T.
Publikováno v:
New Astronomy (vol 73, id 101279, 2019)
Some Be stars display important variability of the strength of the emission lines formed in their disk. This is notably the case of pi Aqr. We present here the recent evolution of the Be disk in this system thanks to spectra collected by amateur spec
Externí odkaz:
http://arxiv.org/abs/1906.09030
Autor:
Zharikov, S. V., Miroshnichenko, A. S., Pollmann, E., Danford, S., Bjorkman, K. S., Morrison, N. D., Favaro, A., Flo, J. Guarro, Terry, J. N., Desnoux, V., Garrel, T., Martineau, G., Buchet, Y., Ubaud, S., Mauclaire, B., Kalbermatten, H., Buil, C., Sawicki, C. J., Blank, T., Garde, O.
Publikováno v:
A&A 560, A30 (2013)
The work is aimed at a study of the circumstellar disk of the bright classical binary Be star {\pi} Aqr. We analysed variations of a double-peaked profile of the H{\alpha} emission line in the spectrum of {\pi} Aqr that was observed in many phases du
Externí odkaz:
http://arxiv.org/abs/1310.6499
Autor:
Miroshnichenko, A. S., Pasechnik, A. V., Manset, N., Carciofi, A. C., Rivinius, Th., Stefl, S., Gvaramadze, V. V., Ribeiro, J., Fernando, A., Garrel, T., Knapen, J. H., Buil, C., Heathcote, B., Pollmann, E., Mauclaire, B., Thizy, O., Martin, J., Zharikov, S. V., Okazaki, A. T., Gandet, T. L., Eversberg, T., Reinecke, N.
We describe the results of the world-wide observing campaign of the highly eccentric Be binary system delta Scorpii 2011 periastron passage which involved professional and amateur astronomers. Our spectroscopic observations provided a precise measure
Externí odkaz:
http://arxiv.org/abs/1302.4021
Autor:
Smith, M. A., de Oliveira, R. Lopes, Motch, C., Henry, G. W., Richardson, N. D., Bjorkman, K. S., Stee, Ph., Mourard, D., Monnier, J. D., Che, X., Buecke, R., Pollmann, E., Gies, D. R., Schaefer, G. H., Brummelaar, T. ten, McAlister, H. A., Turner, N. H., Sturmann, J., Sturmann, L., Ridgway, S. T.
\gamma Cas is the prototypical classical Be star and is best known for its variable hard X-ray emission. To elucidate the reasons for this emission, we mounted a multiwavelength campaign in 2010 centered around 4 XMM observations. The observational t
Externí odkaz:
http://arxiv.org/abs/1201.6415
Autor:
Stefl, S., Rivinius, Th., Carciofi, A. C., LeBouquin, J. B., Baade, D., Bjorkman, K. S., Hesselbach, E., Hummel, C. A., Okazaki, A. T., Pollmann, E., Rantakyrö, F., Wisniewski, J. P.
Emission lines formed in decretion disks of Be stars often undergo long-term cyclic variations, especially in the violet-to-red (V/R) ratio of their primary components. From observations of the bright Be-shell star zeta Tau, the possibly broadest and
Externí odkaz:
http://arxiv.org/abs/0907.2250
Autor:
Pollmann, E., Rivinius, Th.
We report H-alpha observations of zeta Tauri, taken between late 2000 and early 2006. Next to extending existing long-term montioring of the disk state of this star we report an intermediate timescale of about 69 days to be present in the V/R variati
Externí odkaz:
http://arxiv.org/abs/0801.4530