Zobrazeno 1 - 10
of 22
pro vyhledávání: '"W. Braunisch"'
Autor:
J. Bock, Vladislav Kataev, W. Braunisch, B. Roden, S. Neuhausen, A. Becker, A. Grütz, A. Kock, E. Preisler, B. Freitag, Gernot Bauer, N. Knauf, D. Wohlleben, D. I. Khomskii
Publikováno v:
Physical Review B. 48:4030-4042
We have studied the low-field Meissner effect of polycrystalline Bi high-temperature superconductors using a special superconducting-quantum-interference-device magnetometer. In certain samples a surprising feature was observed: Instead of the usual
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13c40dec93a86ffe3bce98752ee6ed4f
https://doi.org/10.1103/physrevb.48.4030
https://doi.org/10.1103/physrevb.48.4030
Autor:
O. Hoffels, A. Freimuth, G. Heger, W. Schlabitz, M. Cramm, D. I. Khomskii, R. Müller, D. Wohlleben, Bernd Büchner, Markus Braden, W. Schnelle, W. Braunisch
Publikováno v:
Europhysics Letters (EPL). 21:953-958
Experimental evidence is presented for a competition between the superconducting and a structural transition in La1.85−xNdxSr0.15CuO4 as a function of the Nd content. At high Nd concentration (x ≥ 0.18) a discontinuous, first-order structural tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a5e64325f6b6caecf8e918b47119b76
https://doi.org/10.1209/0295-5075/21/9/013
https://doi.org/10.1209/0295-5075/21/9/013
Autor:
J. Harnischmacher, H. Broicher, S. Ruppel, W. Braunisch, E. Braun, D. Wohlleben, R. Domel, W. Schnelle
Publikováno v:
Physica C: Superconductivity. 168:465-474
We present high resolution specific heat measurements and thermal expansion data of YBa 2 Cu 3 O 7-δ polycrystalline samples in the temperature range 20–300 K. The specific heat anomaly at T c shows strong deviations from mean field behavior due t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4bee9912db65cbd163e4e36497b35c2
https://doi.org/10.1016/0921-4534(90)90063-k
https://doi.org/10.1016/0921-4534(90)90063-k
Publikováno v:
IEEE Transactions on Magnetics. 30:1166-1168
The DC susceptibility of Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub x/ single crystals has been measured in very low magnetic fields, applied parallel and perpendicular to c-axis. The Meissner and shielding effects have been observed for both orientations. I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a94178e15f5af6a55baabc2ae814477
https://doi.org/10.1109/20.312205
https://doi.org/10.1109/20.312205
Autor:
N. Knauf, A. Kock, D. Wohlleben, B. Roden, S. Neuhausen, W. Braunisch, Daniel I. Khomskii, Vladislav Kataev, A. Grütz
Publikováno v:
Physical review letters. 68(12)
For certain ceramic samples of the Bi-based high-temperture superconductors, the dc-field-cooling signal becomes paramagnetic in fields below a few 100 mOe. This effect correlates with an anomaly in the low-field microwave absorption. The data are co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d2158de58800cf809c230a3206ac3b2
https://pubmed.ncbi.nlm.nih.gov/10045251
https://pubmed.ncbi.nlm.nih.gov/10045251
Autor:
C. Hohn, W. Schlabitz, Bernd Büchner, Markus Braden, G. Heger, D. Wohlleben, W. Schnelle, A. Gruetz, M. Cramm, D. I. Khomskii, A. Freimuth, R. Müller, R. Borowski, W. Braunisch, B. Heymer, J. Harnischmacher, O. Hoffels, O. Maldonado
Publikováno v:
Physics and Materials Science of High Temperature Superconductors, II ISBN: 9789401050869
In (La RE)SrCuO with RE = Nd, Eu, Gd, Dy, Tb we find, besides the known tetragonal → orthorhombic transition, a further low temperature (LT) structural phase transition. Its occurance and also the low temperature structure depend on RE and Sr conte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b2dc12f30d267b9420af3019cedeaaf
https://doi.org/10.1007/978-94-011-2462-1_22
https://doi.org/10.1007/978-94-011-2462-1_22
Autor:
B. Roden, A. Kock, W. Braunisch, A. Becker, Gernot Bauer, Vladislav Kataev, D. I. Khomskii, N. Knauf, B. Freitag
Publikováno v:
Physica B: Condensed Matter. :2229-2230
For certain polycrystalline Bi-HTSC samples, a surprising feature was observed: instead of the usual diamagnetic response of the dc field-cooling (FC) signal, a paramagnetic moment develops below Tc for fields < 1 Oe. This effect correlates with an a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50361a413c912b13d24f6c3f59e3845e
https://doi.org/10.1016/0921-4526(94)91614-4
https://doi.org/10.1016/0921-4526(94)91614-4
Autor:
W. Braunisch, O. Hoffels, M. Cramm, D. Wohlleben, R. Müller, Bernd Büchner, W. Schlabitz, Markus Braden, G. Heger
Publikováno v:
Physica C: Superconductivity. :903-904
In ( La RE)SrCuO with RE = Nd, Eu, Gd, Dy, Tb we find besides the known tetragonal → orthorhombic transition a further low temperature structural phase transition to a tetragonal phase (probably P4 2 /ncm). A detailed phase diagram of La 1.85−x N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f22c96044fb82c1e36d4e916274c4c87
https://doi.org/10.1016/0921-4534(91)91675-t
https://doi.org/10.1016/0921-4534(91)91675-t
Autor:
W. Braunisch, H. Geus, Y. Wolfus, N. Wild, W. Schnelle, D. Wohlleben, Z. Drzazga, Israel Felner, H. Schmidt, F. Seidler, E. Braun, B. Roden, P. Böhm
Publikováno v:
Physica C: Superconductivity. 157:375-394
Specific heat, field cooling Meissner effect, isothermal magnetization, AC susceptibility and resistance were measured on sintered pellets of the Bi and Tl high temperature superconductors with nominal compositions BiPb 0.3 SrCaCu 2 O 5.8 and Tl 2 Ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::664f97fc454907747de18758c5159f4a
https://doi.org/10.1016/0921-4534(89)90262-1
https://doi.org/10.1016/0921-4534(89)90262-1
Autor:
B. Roden, P. Böhm, F. Seidler, W. Schnelle, M. Galffy, H. Broicher, E. Braun, H. Geus, Israel Felner, W. Braunisch, D. Wohlleben, Z. Drzazga, S. Ruppel
Publikováno v:
Physica C: Superconductivity and its Applications. :496-497
In the specific heat of the BiSrCaCuO and TlBaCaCuO families of high temperature superconductors the usual jump of a second order mean field transition is absent. Sharp breaks of the slope of C(T) appear instead at the thermodynamic transition temper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f15995b1ffddbed29752365b93936d2e
https://doi.org/10.1016/0921-4534(89)91123-4
https://doi.org/10.1016/0921-4534(89)91123-4