Zobrazeno 1 - 10
of 1 201
pro vyhledávání: '"Löhneysen, H. V."'
Autor:
Molatta, S., Opherden, D., Wosnitza, J., Zhang, Z. T., Wolf, T., Löhneysen, H. v., Sarkar, R., Biswas, P. K., Grafe, H. -J., Kühne, H.
Publikováno v:
Phys. Rev. B 104, 014504 (2021)
A number of recent experiments indicate that the iron-chalcogenide FeSe provides the long-sought possibility to study bulk superconductivity in the cross-over regime between the weakly coupled Bardeen--Cooper--Schrieffer (BCS) pairing and the strongl
Externí odkaz:
http://arxiv.org/abs/2010.10128
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
Publikováno v:
Phys. Rev. B 100, 134432 (2019)
$^{51}$V nuclear magnetic resonance (NMR) and magnetization studies on CeTi$_{1-x}$V$_x$Ge$_3$ have been performed to explore the evolution from the ferromagnetic ($x = 0.113$) to the antiferromagnetic Kondo lattice state ($x = 1$), with focus on the
Externí odkaz:
http://arxiv.org/abs/1806.04111
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
Autor:
Kasahara, S., Yamashita, T., Shi, A., Kobayashi, R., Shimoyama, Y., Watashige, T., Ishida, K., Terashima, T., Wolf, T., Hardy, F., Meingast, C., Löhneysen, H. v., Levchenko, A., Shibauchi, T., Matsuda, Y.
Publikováno v:
Nat. Commun. 7, 12843 (2016)
The physics of the crossover between weak-coupling Bardeen-Cooper-Schrieffer (BCS) and strong-coupling Bose-Einstein-condensate (BEC) limits gives a unified framework of quantum bound (superfluid) states of interacting fermions. This crossover has be
Externí odkaz:
http://arxiv.org/abs/1608.01829
Publikováno v:
AIP Advances Vol. 6, 055604 (2016)
Metallic antiferromagnets with noncollinear orientation of magnetic moments provide a playground for investigating spin-dependent transport properties by analysis of the anomalous Hall effect. The intermetallic compound Mn5Si3 is an intinerant antife
Externí odkaz:
http://arxiv.org/abs/1601.01840
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:
Stöffler, D., Marz, M., Kießig, B., Tomanic, T., Schäfer, R., Löhneysen, H. v., Hoffmann-Vogel, R.
Publikováno v:
Phys. Rev. B 90, 115406 (2014)
The electrical resistance R of metallic nanocontacts subjected to controlled cyclic electromigration in ultra-high vacuum has been investigated in-situ as a function of applied voltage V. For sufficiently small contacts, i.e., large resistance, a dec
Externí odkaz:
http://arxiv.org/abs/1411.0105
Autor:
Böhmer, A. E., Arai, T., Hardy, F., Hattori, T., Iye, T., Wolf, T., Löhneysen, H. v., Ishida, K., Meingast, C.
The nature of the tetragonal-to-orthorhombic structural transition at $T_s\approx90$ K in single crystalline FeSe is studied using shear-modulus, heat-capacity, magnetization and NMR measurements. The transition is shown to be accompanied by a large
Externí odkaz:
http://arxiv.org/abs/1407.5497