Zobrazeno 1 - 10
of 221
pro vyhledávání: '"Gutowski, O."'
Autor:
Oppliger, J., Küspert, J., Dippel, A. -C., Zimmermann, M. v., Gutowski, O., Ren, X., Zhou, X. J., Zhu, Z., Frison, R., Wang, Q., Martinelli, L., Biało, I., Chang, J.
Spectacular quantum phenomena such as superconductivity often emerge in flat-band systems where Coulomb interactions overpower electron kinetics. Engineering strategies for flat-band physics is therefore of great importance. Here, using high-energy g
Externí odkaz:
http://arxiv.org/abs/2404.17795
Autor:
Simutis, G., Bollhalder, A., Zolliker, M., Küspert, J., Wang, Q., Das, D., Van Leeuwen, F., Ivashko, O., Gutowski, O., Philippe, J., Kracht, T., Glaevecke, P., Adachi, T., Von Zimmermann, M., Van Petegem, S., Luetkens, H., Guguchia, Z., Chang, J., Sassa, Y., Bartkowiak, M., Janoschek, M.
Publikováno v:
Review of Scientific Instruments 94, 013906 (2023)
We present an in-situ uniaxial pressure device optimized for small angle X-ray and neutron scattering experiments at low-temperatures and high magnetic fields. A stepper motor generates force, which is transmitted to the sample via a rod with integra
Externí odkaz:
http://arxiv.org/abs/2207.13194
Autor:
Choi, J., Ivashko, O., Blackburn, E., Liang, R., Bonn, D. A., Hardy, W. N., Holmes, A. T., Christensen, N. B., Hücker, M., Gerber, S., Gutowski, O., Rütt, U., Zimmermann, M. v., Forgan, E. M., Hayden, S. M., Chang, J.
Publikováno v:
Nature Communications 11, 990 (2020)
The charge density wave in the high-temperature superconductor YBa$_2$Cu$_3$O$_{7-x}$ (YBCO) is now known to have two different ordering tendencies differentiated by their $c$-axis correlations. These correspond to ferro- (F-CDW) and antiferro- (AF-C
Externí odkaz:
http://arxiv.org/abs/1909.09359
Publikováno v:
Phys. Rev. B 100, 014413 (2019)
The high-temperature ferroelectric order and a remarkable magnetoelectric effect driven by the magnetic field cooling are reported in R2BaCuO5 (R = Er, Dy, Sm) series. The ferroelectric (FE) orders are observed at much higher temperatures than their
Externí odkaz:
http://arxiv.org/abs/1904.02586
Autor:
Dey, J. K., Chatterjee, A., Majumdar, S., Dippel, A. -C., Gutowski, O., Zimmermann, M. v., Giri, S.
Publikováno v:
Phys. Rev. B 99, 144412 (2019)
We report a ferroelectric order at ~ 98 K for NiFe2O4, which carries an inverse spinel structure with a centrosymmetric Fd3m structure at room temperature. The value of spontaneous electric polarization is considerably high as ~ 0.29 {\mu}C/cm2 for 5
Externí odkaz:
http://arxiv.org/abs/1903.01739
Autor:
Choi, J., Ivashko, O., Dennler, N., Aoki, D., von Arx, K., Gerber, S., Gutowski, O., Fischer, M. H., Strempfer, J., Zimmermann, M. v., Chang, J.
Publikováno v:
Phys. Rev. B 98 241113(R) (2018)
Phase transitions and symmetry are intimately linked. Melting of ice, for example, restores translation invariance. The mysterious hidden order (HO) phase of URu$_2$Si$_2$ has, despite relentless research efforts, kept its symmetry breaking element i
Externí odkaz:
http://arxiv.org/abs/1901.02494
Autor:
Ruiz-Martín, M.D., Holland-Moritz, D., Yang, F., Yuan, C.C., Simeoni, G.G., Hansen, T.C., Rütt, U., Gutowski, O., Bednarčík, J., Meyer, A.
Publikováno v:
In Journal of Non-Crystalline Solids: X December 2022 16
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Autor:
Li, Z. W., Drees, Y., Kuo, C. Y., Guo, H., Ricci, A., Lamago, D., Sobolev, O., Rütt, U., Gutowski, O., Pi, T. W., Piovano, A., Schmidt, W., Mogare, K., Hu, Z., Tjeng, L. H., Komarek, A. C.
Publikováno v:
Scientific Reports 6, 25117 (2016)
We observe quasi-static incommensurate magnetic peaks in neutron scattering experiments on layered cobalt oxides La2-xSrxCoO4 with high Co oxidation states that have been reported to be paramagnetic. This enables us to measure the magnetic excitation
Externí odkaz:
http://arxiv.org/abs/1604.08389
Autor:
Li, Z. W., Drees, Y., Ricci, A., Lamago, D., Piovano, A., Rotter, M., Schmidt, W., Sobolev, O., Rütt, U., Gutowski, O., Sprung, M., Castellan, J. P., Tjeng, L. H., Komarek, A. C.
The single-layer perovskite cobaltates have attracted enormous attention due to the recent observation of hour-glass shaped magnetic excitation spectra which resemble the ones of the famous high-temperature superconducting cuprates. Here, we present
Externí odkaz:
http://arxiv.org/abs/1601.01795