Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Autès G"'
Autor:
Yao, M. -Y., Xu, N., Wu, Q., Autès, G., Kumar, N., Strocov, V. N., Plumb, N. C., Radovic, M., Yazyev, O. V., Felser, C., Mesot, J., Shi, M.
Distinct to type-I Weyl semimetals (WSMs) that host quasiparticles described by the Weyl equation, the energy dispersion of quasiparticles in type-II WSMs violates Lorentz invariance and the Weyl cones in the momentum space are tilted. Since it was p
Externí odkaz:
http://arxiv.org/abs/1904.03523
Autor:
Xu, N., Qian, Y. T., Wu, Q. S., Autes, G., Matt, C. E., Lv, B. Q., Yao, M. Y., Strocov, V. N., Pomjakushina, E., Conder, K., Plumb, N. C., Radovic, M., Yazyev, O. V., Qian, T., Ding, H., Mesot, J., Shi, M.
Publikováno v:
Phys. Rev. B 97, 161111(R) (2018)
By performing angle-resolved photoemission spectroscopy and first-principles calculations, we address the topological phase of CaAgP and investigate the topological phase transition in CaAg(P1-xAsx). We reveal that in CaAgP, the bulk band gap and sur
Externí odkaz:
http://arxiv.org/abs/1804.09327
Autor:
Crepaldi, A., Autès, G., Gatti, G., Roth, S., Sterzi, A., Manzoni, G., Zacchigna, M., Cacho, C., Chapman, R. T., Springate, E., Seddon, E. A., Bugnon, Ph., Magrez, A., Berger, H., Vobornik, I., Kalläne, M., Quer, A., Rossnagel, K., Parmigiani, F., Yazyev, O. V., Grioni, M.
Publikováno v:
Phys. Rev. B 96, 241408 (2017)
$\mathrm{MoTe_2}$ has recently been shown to realize in its low-temperature phase the type-II Weyl semimetal (WSM). We investigated by time- and angle- resolved photoelectron spectroscopy (tr-ARPES) the possible influence of the Weyl points in the el
Externí odkaz:
http://arxiv.org/abs/1709.09854
Autor:
Pisoni, A., Gaal, R., Zeugner, A., Falkowski, V., Isaeva, A., Huppertz, H., Autes, G., Yazyev, O. V., Forro, L.
Publikováno v:
Phys. Rev. B 95, 235149 (2017)
We report a detailed study of the transport coefficients of $\beta$-Bi$_4$I$_4$ quasi-one dimensional topological insulator. Electrical resistivity, thermoelectric power, thermal conductivity and Hall coefficient measurements are consistent with the
Externí odkaz:
http://arxiv.org/abs/1702.04794
Autor:
Xu, N., Autes, G., Matt, C. E., Lv, B. Q., Yao, M. Y., Bisti, F., Strocov, V. N., Gawryluk, D., Pomjakushina, E., Conder, K., Plumb, N. C., Radovic, M., Qian, T., Yazyev, O. V., Mesot, J., Ding, H., Shi, M.
The Weyl semimetal phase is a recently discovered topological quantum state of matter characterized by the presence of topologically protected degeneracies near the Fermi level. These degeneracies are the source of exotic phenomena, including the rea
Externí odkaz:
http://arxiv.org/abs/1702.01934
Autor:
Crassee, I., Borondics, F., Tran, M. K., Autès, G., Magrez, A., Bugnon, P., Berger, H., Teyssier, J., Yazyev, O. V., Orlita, M., Akrap, A.
Publikováno v:
Phys. Rev. B 95, 045201 (2017)
We here report a detailed high-pressure infrared transmission study of BiTeCl and BiTeBr. We follow the evolution of two band transitions: the optical excitation $\beta$ between two Rashba-split conduction bands, and the absorption $\gamma$ across th
Externí odkaz:
http://arxiv.org/abs/1609.09102
Autor:
Manzoni, G., Gragnaniello, L., Autès, G., Kuhn, T., Sterzi, A., Cilento, F., Zacchigna, M., Enenkel, V., Vobornik, I., Barba, L., Bisti, F., Bugnon, Ph., Magrez, A., Strocov, V. N., Berger, H., Yazyev, O. V., Fonin, M., Parmigiani, F., Crepaldi, A.
Publikováno v:
Phys. Rev. Lett. 117, 237601 (2016)
The complex electronic properties of $\mathrm{ZrTe_5}$ have recently stimulated in-depth investigations that assigned this material to either a topological insulator or a 3D Dirac semimetal phase. Here we report a comprehensive experimental and theor
Externí odkaz:
http://arxiv.org/abs/1608.03433
Publikováno v:
Phys. Rev. Lett. 117, 066402 (2016)
The recently discovered type-II Weyl points appear at the boundary between electron and hole pockets. Type-II Weyl semimetals that host such points are predicted to exhibit a new type of chiral anomaly and possess thermodynamic properties very differ
Externí odkaz:
http://arxiv.org/abs/1603.04624
Autor:
Xu, N., Weng, H. M., Lv, B. Q., Matt, C., Park, J., Bisti, F., Strocov, V. N., Gawryluk, D., Pomjakushina, E., Conder, K., Plumb, N. C., Radovic, M., Autès, G., Yazyev, O. V., Fang, Z., Dai, X., Aeppli, G., Qian, T., Mesot, J., Ding, H., Shi, M.
Publikováno v:
Nature Communications 7, 11006 (2016)
A Weyl semimetal possesses spin-polarized band-crossings, called Weyl nodes, connected by topological surface arcs. The low-energy excitations near the crossing points behave the same as massless Weyl fermions, leading to exotic properties like chira
Externí odkaz:
http://arxiv.org/abs/1507.03983
Autor:
Crepaldi, A., Cilento, F., Zacchigna, M., Zonno, M., Johannsen, J. C., Tournier-Colletta, C., Moreschini, L., Vobornik, I., Bondino, F., Magnano, E., Berger, H., Magrez, A., Bugnon, Ph., Autés, G., Yazyev, O. V., Grioni, M., Parmigiani, F.
Publikováno v:
Phys. Rev. B 89, 125408, 2014
Bulk Rashba systems BiTeX (X = I, Br, Cl) are emerging as important candidates for developing spintronics devices, because of the coexistence of spin-split bulk and surface states, along with the ambipolar character of the surface charge carriers. Th
Externí odkaz:
http://arxiv.org/abs/1409.5025