Zobrazeno 1 - 10
of 742
pro vyhledávání: '"Nicklas, M."'
Autor:
Piva, M. M., Wawrzyńczak, R., Kumar, Nitesh, Kutelak, L. O., Lombardi, G. A., Reis, R. D. dos, Felser, C., Nicklas, M.
Publikováno v:
Phys. Rev. Materials 8 L041202 (2024)
At ambient pressure, HfTe$_{5}$ is a material at the boundary between a weak and a strong topological phase, which can be tuned by changes in its crystalline structure or by the application of high magnetic fields. It exhibits a Lifshitz transition u
Externí odkaz:
http://arxiv.org/abs/2404.13969
Publikováno v:
Phys. Rev. Materials 7 L111801 (2023)
Topological superconductors have long been sought for their potential use in quantum computing. The type-II Weyl semimetal MoTe$_{2}$ is an obvious candidate, exhibiting a superconducting state below 500 mK at ambient pressure, but the question remai
Externí odkaz:
http://arxiv.org/abs/2311.07136
Autor:
Piva, M. M., Souza, J. C., Lombardi, G. A., Pakuszewski, K. R., Adriano, C., Pagliuso, P. G., Nicklas, M.
Publikováno v:
Phys. Rev. Mater. 7, 074204 (2023)
The Weyl semimetal CeAlGe is a promising material to study nontrivial topologies in real and momentum space due to the presence of a topological magnetic phase. Our results at ambient pressure show that the electronic properties of CeAlGe are extreme
Externí odkaz:
http://arxiv.org/abs/2303.12144
Autor:
Piva, M. M., Souza, J. C., Brousseau-Couture, V., Sorn, Sopheak, Pakuszewski, K. R., John, Janas K., Adriano, C., Côté, M., Pagliuso, P. G., Paramekanti, Arun, Nicklas, M.
Publikováno v:
Phys. Rev. Research 5 013068 (2023)
In the ferromagnetic (FM) Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. Our quantum oscillation (QO) data indicate that the FM ordering modifies the Fermi surface topology and also leads to an unusual drop in the
Externí odkaz:
http://arxiv.org/abs/2301.13707
Autor:
Ajeesh, M. O., Materne, P., Reis, R. D. dos, Weber, K., Dengre, S., Sarkar, R., Khasanov, R., Kraft, I., León, A. M., Bi, W., Zhao, J., Alp, E. E., Medvedev, S., Ksenofontov, V., Rosner, H., Klauss, H. -H., Geibel, C., Nicklas, M.
Publikováno v:
Phys. Rev. B 107, 125136 (2023)
LuFe$_4$Ge$_2$ crystallizes in the ZrFe$_4$Si$_2$-type structure, hosting chains of Fe-tetrahedra giving rise to geometric frustration and low-dimensionality. The compound orders antiferromagnetically at around 36 K accompanied by a simultaneous stru
Externí odkaz:
http://arxiv.org/abs/2301.04596
Autor:
Mendes, J. B. S., Cunha, R. O., Ferreira, S. O., Reis, R. D. dos, Schmidt, M., Nicklas, M., Rezende, S. M., Azevedo, A.
Publikováno v:
Advanced Materials Interfaces 9, 2201716 (2022)
In this paper we present spin-to-charge current conversion properties in the Weyl semimetal TaP by means of the inverse Rashba-Edelstein effect (IREE) with the integration of this quantum material with the ferromagnetic metal Permalloy $(Py=Ni_{81}Fe
Externí odkaz:
http://arxiv.org/abs/2208.05151
Autor:
Piva, M. M., Souza, J. C., Brousseau-Couture, V., Pakuszewski, K. R., John, Janas K., Adriano, C., Côté, M., Pagliuso, P. G., Nicklas, M.
Publikováno v:
extended version published in Phys. Rev. Research 5 013068 (2023)
In the ferromagnetic Weyl semimetal CeAlSi both space-inversion and time-reversal symmetries are broken. We use external pressure as an effective tuning parameter and relate three observations to the presence of a nontrivial topology in its ferromagn
Externí odkaz:
http://arxiv.org/abs/2111.05742
Autor:
Baenitz, M., Piva, M. M., Luther, S., Sichelschmidt, J., Ranjith, K. M., Dawczak-Dȩbicki, H., Ajeesh, M. O., Kim, S. -J., Siemann, G., Bigi, C., Manuel, P., Khalyavin, D., Sokolov, D. A., Mokhtari, P., Zhang, H., Yasuoka, H., King, P. D. C., Vinai, G., Polewczyk, V., Torelli, P., Wosnitza, J., Burkhardt, U., Schmidt, B., Rosner, H., Wirth, S., Kühne, H., Nicklas, M., Schmidt, M.
Our studies evidence an anisotropic magnetic order below $T_N = 32$~K. Susceptibility data in small fields of about 1~T reveal an antiferromagnetic (AFM) order for $H \perp c$, whereas for $H \parallel c$ the data are reminiscent of a field-induced f
Externí odkaz:
http://arxiv.org/abs/2109.02582
Publikováno v:
Phys. Rev. Lett. 125, 207001 (2020)
In the iron-pnictide material CeFeAsO not only the Fe moments, but also the local 4f moments of the Ce order antiferromagnetically at low temperatures. We elucidate on the peculiar role of the Ce on the emergence of superconductivity. While applicati
Externí odkaz:
http://arxiv.org/abs/2011.05665
Publikováno v:
Rev. Sci. Instrum. 91, 103903 (2020)
We report the development of a technique to measure heat capacity at large uniaxial pressure using a piezoelectric-driven device generating compressive and tensile strain in the sample. Our setup is optimized for temperatures ranging from 8 K down to
Externí odkaz:
http://arxiv.org/abs/2009.03125