Zobrazeno 1 - 10
of 341
pro vyhledávání: '"MORRIS, C. M."'
Autor:
Morris, C. M., Desai, Nisheeta, Viirok, J., Huvonen, D., Nagel, U., Room, T., Krizan, J. W., Cava, R. J., McQueen, T. M., Koohpayeh, S. M., Kaul, Ribhu K., Armitage, N. P.
Publikováno v:
Nature Physics (2021)
The Ising chain in transverse field is a paradigmatic model for a host of physical phenomena, including spontaneous symmetry breaking, topological defects, quantum criticality, and duality. Although the quasi-1D ferromagnet CoNb$_2$O$_6$ has been put
Externí odkaz:
http://arxiv.org/abs/2009.14189
Autor:
Laurita, N. J., Morris, C. M., Koohpayeh, S. M., Phelan, W. A., McQueen, T. M., Armitage, N. P.
Recent experiments have uncovered evidence of low energy excitations in the bulk of SmB$_6$ that are perhaps associated with unconventional quasiparticles, bringing into question whether this Kondo "insulator" is truly insulating in the bulk. Recentl
Externí odkaz:
http://arxiv.org/abs/1709.01508
Autor:
Laurita, N. J., Morris, C. M., Koohpayeh, S. M., Rosa, P. F. S., Phelan, W. A., Fisk, Z., McQueen, T. M., Armitage, N. P.
Publikováno v:
Phys. Rev. B 94, 165154 (2016)
The Kondo insulator SmB$_6$ has long been known to display anomalous transport behavior at low temperatures, T$<5$ K. In this temperatures range, a plateau is observed in the dc resistivity, contrary to the exponential divergence expected for a gappe
Externí odkaz:
http://arxiv.org/abs/1608.03901
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
Singlet-triplet excitations and long range entanglement in the spin-orbital liquid candidate FeSc2S4
Autor:
Laurita, N. J., Deisenhofer, J., Pan, LiDong, Morris, C. M., Schmidt, M., Johnsson, M., Tsurkan, V., Loidl, A., Armitage, N. P.
Publikováno v:
Phys. Rev. Lett. 114, 207201 (2015)
Theoretical models of the spin-orbital liquid (SOL) FeSc$_2$S$_4$ have predicted it to be in close proximity to a quantum critical point separating a spin-orbital liquid phase from a long-range ordered magnetic phase. Here, we examine the magnetic ex
Externí odkaz:
http://arxiv.org/abs/1410.6777
Autor:
Morris, C. M., Aguilar, R. Valdés, Ghosh, A., Koohpayeh, S. M., Krizan, J., Cava, R. J., Tchernyshyov, O., McQueen, T. M., Armitage, N. P.
Publikováno v:
Phys. Rev. Lett. 112, 137403 (2014)
Kink bound states in the one dimensional ferromagnetic Ising chain compound CoNb$_2$O$_6$ have been studied using high resolution time-domain terahertz spectroscopy in zero applied magnetic field. When magnetic order develops at low temperature, nine
Externí odkaz:
http://arxiv.org/abs/1312.4514
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
We present high precision measurements of polarization rotations in the frequency range from 0.1 to 2.5 THz using a polarization modulation technique. A motorized stage rotates a polarizer at ~80 Hz, and the resulting modulation of the polarization i
Externí odkaz:
http://arxiv.org/abs/1203.5019
Autor:
Krenner, H. J., Pryor, C., He, J., Zhang, J. P., Wu, Y., Morris, C. M., Sherwin, M. S., Petroff, P. M.
Publikováno v:
Physica E 40, 1785-1789 (2008)
We demonstrate a method to grow height controlled, dislocation-free InGaAs quantum posts (QPs) on GaAs by molecular beam epitaxy (MBE) which is confirmed by structural investigations. The optical properties are compared to realistic 8-band k.p calcul
Externí odkaz:
http://arxiv.org/abs/0709.2392
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