Zobrazeno 1 - 10
of 215
pro vyhledávání: '"Brahlek, M."'
Many of the most exciting materials discoveries in fundamental condensed matter physics are made in systems hosting some degree of intrinsic disorder. While disorder has historically been regarded as something to be avoided in materials design, it is
Externí odkaz:
http://arxiv.org/abs/2402.18379
Autor:
Ward, T. Z., Wilkerson, R. P., Musico, B. L., Foley, A., Brahlek, M., Weber, W. J., Sickafus, K. E., Mazza, A. R.
Compositionally complex materials have demonstrated extraordinary promise for structural robustness in extreme environments. Of these, the most commonly thought of are high entropy alloys, where chemical complexity grants uncommon combinations of har
Externí odkaz:
http://arxiv.org/abs/2401.01418
Autor:
Zhang, Jie, Yilmaz, T., Meier, J. W. R., Pai, J. Y., Lapano, J., Li, H. X., Kaznatcheev, K., Vescovo, E., Huon, A., Brahlek, M., Ward, T. Z., Lawrie, B., Moore, R. G., Lee, H. N., Wang, Y. L., Miao, H., Sales, B.
Electronic flat band systems are a fertile platform to host correlation-induced quantum phenomena such as unconventional superconductivity, magnetism and topological orders. While flat band has been established in geometrically frustrated structures,
Externí odkaz:
http://arxiv.org/abs/2105.08888
Autor:
Lovinger, D. J., Brahlek, M., Kissin, P., Kennes, D. M., Millis, A. J., Engel-Herbert, R., Averitt, R. D.
Publikováno v:
Phys. Rev. B 102, 115143 (2020)
Recent optical conductivity measurements reveal the presence of Hubbard excitons in certain Mott insulators. In light of these results, it is important to revisit the dynamics of these materials to account for excitonic correlations. We investigate t
Externí odkaz:
http://arxiv.org/abs/2009.10219
Autor:
Kung, H. -H., Salehi, M., Boulares, I., Kemper, A. F., Koirala, N., Brahlek, M., Lošťák, P., Uher, C., Merlin, R., Wang, X., Cheong, S. -W., Oh, S., Blumberg, G.
Publikováno v:
Phys. Rev. B 95, 245406 (2017)
We present polarization resolved Raman scattering study of surface vibration modes in the topological insulator Bi$_2$Se$_3$ single crystal and thick films. Besides the four Raman active bulk phonons, we observed four additional modes with much weake
Externí odkaz:
http://arxiv.org/abs/1611.05926
Autor:
de Vries, E. K., Kamerbeek, A. M., Koirala, N., Brahlek, M., Salehi, M., Oh, S., van Wees, B. J., Banerjee, T.
Publikováno v:
Phys. Rev. B 92, 201102(R) (2015)
Topological insulators provide a new platform for spintronics due to the spin texture of the surface states that are topologically robust against elastic backscattering. Here, we report on an investigation of the measured voltage obtained from effort
Externí odkaz:
http://arxiv.org/abs/1510.08339
Autor:
Wu, Liang, Tse, Wang-Kong, Brahlek, M., Morris, C. M., Aguilar, R. Valdés, Koirala, N., Oh, S., Armitage, N. P.
Publikováno v:
Phys. Rev. Lett. 115, 217602 (2015)
We have utilized time-domain magneto-terahertz spectroscopy to investigate the low frequency optical response of topological insulator Cu$_{0.02}$Bi$_2$Se$_3$ and Bi$_2$Se$_3$ films. With both field and frequency dependence, such experiments give suf
Externí odkaz:
http://arxiv.org/abs/1502.04577
Autor:
Aguilar, R. Valdés, Qi, J., Brahlek, M., Bansal, N., Azad, A., Bowlan, J., Oh, S., Taylor, A. J., Prasankumar, R. P., Yarotski, D. A.
We use optical pump--THz probe spectroscopy at low temperatures to study the hot carrier response in thin Bi$_2$Se$_3$ films of several thicknesses, allowing us to separate the bulk from the surface transient response. We find that for thinner films
Externí odkaz:
http://arxiv.org/abs/1410.5666
Autor:
Di Pietro, P., Ortolani, M., Limaj, O., Di Gaspare, A., Giliberti, V., Giorgianni, F., Brahlek, M., Bansal, N., Koirala, N., Oh, S., Calvani, P., Lupi, S.
Plasmons are the quantized collective oscillations of electrons in metals and doped semiconductors. The plasmons of ordinary, massive electrons are since a long time basic ingredients of research in plasmonics and in optical metamaterials. Plasmons o
Externí odkaz:
http://arxiv.org/abs/1307.5974
Autor:
Wu, Liang, Brahlek, M., Aguilar, R. Valdés, Stier, A. V., Morris, C. M., Lubashevsky, Y., Bilbro, L. S., Bansal, N., Oh, S., Armitage, N. P.
Publikováno v:
Nature Physics 9, 410-414 (2013)
Topological insulators (TIs) are newly discovered states of matter with robust metallic surface states protected by the topological properties of the bulk wavefunctions. A quantum phase transition (QPT) from a TI to a conventional insulator and a cha
Externí odkaz:
http://arxiv.org/abs/1209.3290