Zobrazeno 1 - 10
of 297
pro vyhledávání: '"Zwicknagl G"'
Autor:
Khanenko, P., Hafner, D., Semeniuk, K., Banda, J., Luehmann, T., Baertl, F., Kotte, T., Wosnitza, J., Zwicknagl, G., Geibel, C., Landaeta, J. F., Khim, S., Hassinger, E., Brando, M.
Unconventional superconductivity in heavy-fermion systems appears often near magnetic quantum critical points (QCPs). This seems to be the case also for CeRh2As2 (Tc $\approx$ 0.31 K). CeRh2As2 shows two superconducting (SC) phases, SC1 and SC2, for
Externí odkaz:
http://arxiv.org/abs/2409.11894
Conventional type-II superconductivity in locally non-centrosymmetric LaRh$_2$As$_2$ single crystals
Autor:
Landaeta, J. F., Leon, A. M., Zwickel, S., Lühmann, T., Brando, M., Geibel, C., Eljaouhari, E. -O., Rosner, H., Zwicknagl, G., Hassinger, E., Khim, S.
Publikováno v:
Phys. Rev. B 106, 045107 (2022)
We report on the observation of superconductivity in LaRh$_2$As$_2$, which is the analogue without $f$-electrons of the heavy-fermion system with two superconducting phases CeRh$_2$As$_2$. A zero-resistivity transition, a specific-heat jump and a dro
Externí odkaz:
http://arxiv.org/abs/2204.07740
Autor:
Hafner, D., Khanenko, P., Eljaouhari, E. -O., Küchler, R., Banda, J., Bannor, N., Lühmann, T., Landaeta, J. F., Mishra, S., Sheikin, I., Hassinger, E., Khim, S., Geibel, C., Zwicknagl, G., Brando, M.
Publikováno v:
Phys. Rev. X 12, 011023 (2022)
CeRh2As2 has recently been reported to be a rare case of multi-phase unconventional superconductor [S. Khim et al., arXiv:2101.09522] close to a quantum critical point (QCP). Here, we present a comprehensive study of its normal state properties and o
Externí odkaz:
http://arxiv.org/abs/2108.06267
Akademický článek
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Autor:
Kummer, K., Geibel, C., Krellner, C., Zwicknagl, G., Laubschat, C., Brookes, N. B., Vyalikh, D. V.
Publikováno v:
Nature Comm. 9, 2011 (2018)
The Kondo model predicts that both the valence at low temperatures and its temperature dependence scale with the characteristic energy T_K of the Kondo interaction. Here, we study the evolution of the 4f occupancy with temperature in a series of Yb K
Externí odkaz:
http://arxiv.org/abs/1612.02169
Autor:
Grachtrup, D. Schulze, Steinki, N., Süllow, S., Cakir, Z., Zwicknagl, G., Krupko, Y., Sheikin, I., Jaime, M., Mydosh, J. A.
Publikováno v:
Phys. Rev. B 95, 134422 (2017)
We have measured Hall effect, magnetotransport and magnetostriction on the field induced phases of single crystalline UPt$_2$Si$_2$ in magnetic fields up to 60\,T at temperatures down to 50\,mK. For the magnetic field applied along the $c$ axis we ob
Externí odkaz:
http://arxiv.org/abs/1610.01212
We report on a Kondo correlated quantum dot connected to two-dimensional leads where we demonstrate the renormalization of the g-factor in the pure Zeeman case i.e, for magnetic fields parallel to the plane of the quantum dot. For the same system we
Externí odkaz:
http://arxiv.org/abs/1510.05805
Akademický článek
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Autor:
Naren, H. R., Friedemann, S., Zwicknagl, G., Krellner, C., Geibel, C., Steglich, F., Wirth, S.
We study the effect of magnetic fields up to 15 T on the heavy fermion state of YbRh$_2$Si$_2$ via Hall effect and magnetoresistance measurements down to 50 mK. Our data show anomalies at three different characteristic fields. We compare our data to
Externí odkaz:
http://arxiv.org/abs/1307.0436
Autor:
Pfau, H., Daou, R., Lausberg, S., Naren, H. R., Brando, M., Friedemann, S., Wirth, S., Westerkamp, T., Stockert, U., Gegenwart, P., Krellner, C., Geibel, C., Zwicknagl, G., Steglich, F.
We investigate the magnetic field dependent thermopower, thermal conductivity, resistivity and Hall effect in the heavy fermion metal YbRh2Si2. In contrast to reports on thermodynamic measurements, we find in total three transitions at high fields, r
Externí odkaz:
http://arxiv.org/abs/1302.6867