Zobrazeno 1 - 10
of 318
pro vyhledávání: '"Grube K"'
Autor:
Huang, C. -L., Hallas, A. M., Grube, K., Kuntz, S., Spiess, B., Bayliff, K., Besara, T., Siegrist, T., Cai, Y., Beare, J., Luke, G. M., Morosan, E.
Publikováno v:
Phys. Rev. Lett. 124, 117203 (2020)
We report a chemical substitution-induced ferromagnetic quantum critical point in polycrystalline Ni$_{1-x}$Rh$_x$ alloys. Through magnetization and muon spin relaxation measurements, we show that the ferromagnetic ordering temperature is suppressed
Externí odkaz:
http://arxiv.org/abs/2001.05533
Autor:
Ishida, K., Tsujii, M., Hosoi, S., Mizukami, Y., Ishida, S., Iyo, A., Eisaki, H., Wolf, T., Grube, K., Löhneysen, H. v., Fernandes, R. M., Shibauchi, T.
Publikováno v:
Proc. Natl. Acad. Sci. USA 117 6424-6429 (2020)
Electronic nematicity, a correlated state that spontaneously breaks rotational symmetry, is observed in several layered quantum materials. In contrast to their liquid-crystal counterparts, the nematic director cannot usually point in an arbitrary dir
Externí odkaz:
http://arxiv.org/abs/1812.05267
Publikováno v:
Nature Physics 13, 742-745 (2017)
The Third Law of Thermodynamics states that the entropy of any system in equilibrium has to vanish at absolute zero temperature. At nonzero temperatures, on the other hand, matter is expected to accumulate entropy near a quantum critical point (QCP),
Externí odkaz:
http://arxiv.org/abs/1812.02940
Autor:
Grube, K., Pintschovius, L., Weber, F., Castellan, J. -P., Zaum, S., Kuntz, S., Schweiss, P., Stockert, O., Bachus, S., Shimura, Y., Fritsch, V., Löhneysen, H. v.
Publikováno v:
Phys. Rev. Lett. 121, 087203 (2018)
The heavy-fermion compound CeCu$_{6-x}$Au$_x$ has become a model system for unconventional magnetic quantum criticality. For small Au concentrations $0 \leq x < 0.16$, the compound undergoes a structural transition from orthorhombic to monoclinic cry
Externí odkaz:
http://arxiv.org/abs/1804.04513
Publikováno v:
Phys. Rev. B 93, 165111 (2016)
We discuss the paramagnetic and Neel-ordered phases of the Kondo lattice Hamiltonian on the 2D square lattice by means of bond Fermions. In the doped case we find two antiferromagnetic solutions, the first one with small ordered moment, heavy bands,
Externí odkaz:
http://arxiv.org/abs/1604.03274
Autor:
Mizukami, Y., Kawamoto, Y., Shimoyama, Y., Kurata, S., Ikeda, H., Wolf, T., Zocco, D. A., Grube, K., Löhneysen, H. v., Matsuda, Y., Shibauchi, T.
In the heavily hole-doped iron-based superconductors $A$Fe$_2$As$_2$ ($A=$ K, Rb, and Cs), the electron effective mass increases rapidly with alkali-ion radius. To study how the mass enhancement affects the superconducting state, we measure the Londo
Externí odkaz:
http://arxiv.org/abs/1510.02273
Autor:
Zocco, D. A., Hamlin, J. J., Grube, K., Chu, J. -H., Kuo, H. -H., Fisher, I. R., Maple, M. B.
Publikováno v:
Phys. Rev. B 91, 205114 (2015)
We present electrical resistivity and ac-susceptibility measurements of GdTe$_3$, TbTe$_3$ and DyTe$_3$ performed under pressure. An upper charge-density-wave (CDW) is suppressed at a rate of $\mathrm{d}T_{\mathrm{CDW,1}}/\mathrm{d}P$ = $-$85 K/GPa.
Externí odkaz:
http://arxiv.org/abs/1504.07190
Publikováno v:
JPS Conf. Proc. 3, 015007 (2014)
We present a study of the Fermi surface of KFe$_2$As$_2$ single crystals. Quantum oscillations were observed in magnetostriction measured down to 50 mK and in magnetic fields $H$ up to 14 T. For $H \parallel c$, the calculated effective masses are in
Externí odkaz:
http://arxiv.org/abs/1401.4403
Publikováno v:
Phys. Rev. Lett. 111, 057007 (2013)
The upper critical field Hc2(T) of the multiband superconductor KFe2As2 has been studied via low-temperature thermal expansion and magnetostriction measurements. We present compelling evidence for Pauli-limiting effects dominating Hc2(T) for H || a,
Externí odkaz:
http://arxiv.org/abs/1305.5130
Autor:
Fritsch, V., Bagrets, N., Goll, G., Kittler, W., Wolf, M. J., Grube, K., Huang, C. -L., Löhneysen, H. v.
Publikováno v:
Phys. Rev. B 89, 054416 (2014)
Quantum phase transitions have captured the interest of a large community in condensed-matter and atom physics research. The common feature of these very different material classes lies in the fact that the competition between low-energy scales can b
Externí odkaz:
http://arxiv.org/abs/1301.6062