Zobrazeno 1 - 10
of 186
pro vyhledávání: '"Nocera D"'
Publikováno v:
Science 367, eaay0668 (2020)
Spin liquids are quantum phases of matter that exhibit a variety of novel features associated with their topological character. These include various forms of fractionalization - elementary excitations that behave as fractions of an electron. While t
Externí odkaz:
http://arxiv.org/abs/1905.07040
Autor:
Chisnell, R., Helton, J. S., Freedman, D. E., Singh, D. K., Demmel, F., Stock, C., Nocera, D. G., Lee, Y. S.
Publikováno v:
Phys. Rev. B 93, 214403 (2016)
Topological magnon insulators are a new class of magnetic materials that possess topologically nontrivial magnon bands. As a result, magnons in these materials display properties analogous to those of electrons in topological insulators. Here, we pre
Externí odkaz:
http://arxiv.org/abs/1603.00901
Autor:
Matan, K., Bartlett, B. M., Helton, J. S., Sikolenko, V., Mat'aus, S., Prokeus, K., Chen, Y., Lynn, J. W., Grohol, D., Sato, T. J., Tokunaga, M., Nocera, D. G., Lee, Y. S.
Publikováno v:
Phys. Rev. B 83, 214406 (2011)
Magnetization, specific heat, and neutron scattering measurements were performed to study a magnetic transition in jarosite, a spin-5/2 kagome lattice antiferromagnet. When a magnetic field is applied perpendicular to the kagome plane, magnetizations
Externí odkaz:
http://arxiv.org/abs/1102.0185
Autor:
Chu, S., McQueen, T. M., Chisnell, R., Freedman, D. E., Müller, P., Lee, Y. S., Nocera, D. G.
Spin-frustrated systems are one avenue for inducing macroscopic quantum states in materials. However, experimental realization of this goal has been difficult because of the lack of simple materials and, if available, the separation of the unusual ma
Externí odkaz:
http://arxiv.org/abs/1004.0941
Dynamic Scaling in the Susceptibility of the Spin-1\2 Kagome Lattice Antiferromagnet Herbertsmithite
Autor:
Helton, J. S., Matan, K., Shores, M. P., Nytko, E. A., Bartlett, B. M., Qiu, Y., Nocera, D. G., Lee, Y. S.
Publikováno v:
Physical Review Letters 104, 147201 (2010).
The spin-1/2 kagome lattice antiferromagnet herbertsmithite, ZnCu$_{3}$(OH)$_{6}$Cl$_{2}$, is a candidate material for a quantum spin liquid ground state. We show that the magnetic response of this material displays an unusual scaling relation in bot
Externí odkaz:
http://arxiv.org/abs/1002.1091
Publikováno v:
Physica B, 404, 2529-2531 (2009)
We report polarized neutron scattering studies of spin-wave excitations and spin fluctuations in the S=5/2 kagome lattice antiferromagnet KFe3(OH)6(SO4)2 (jarosite). Inelastic polarized neutron scattering measurements at 10 K on a single crystal samp
Externí odkaz:
http://arxiv.org/abs/0908.2670
Publikováno v:
Phys. Rev. Lett. 100 (2008) 077203
ZnCu$_{3}$(OH)$_{6}$Cl$_{2}$ ($S=1/2$) is a promising new candidate for an ideal Kagom\'e Heisenberg antiferromagnet, because there is no magnetic phase transition down to $\sim$50 mK. We investigated its local magnetic and lattice environments with
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703141
Autor:
Helton, J. S., Matan, K., Shores, M. P., Nytko, E. A., Bartlett, B. M., Yoshida, Y., Takano, Y., Suslov, A., Qiu, Y., Chung, J. -H., Nocera, D. G., Lee, Y. S.
Publikováno v:
Physical Review Letters 98, 107204 (2007)
We have performed thermodynamic and neutron scattering measurements on the S=1/2 kagome lattice antiferromagnet Zn Cu_3 (OH)_6 Cl_2. The susceptibility indicates a Curie-Weiss temperature of ~ -300 K; however, no magnetic order is observed down to 50
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610539
Autor:
Matan, K., Grohol, D., Nocera, D. G., Yildirim, T., Harris, A. B., Lee, S. H., Nagler, S. E., Lee, Y. S.
Publikováno v:
Phys. Rev. Lett. 96, 247201 (2006)
The spin wave excitations of the ideal S=5/2 Kagome lattice antiferromagnet KFe3(OH)6(SO4)2 have been measured using high-resolution inelastic neutron scattering. We directly observe a flat mode which corresponds to a lifted "zero energy mode," verif
Externí odkaz:
http://arxiv.org/abs/cond-mat/0602036
Publikováno v:
Nature Materials Vol. 4 323-328 April 2005
The collective behavior of interacting magnetic moments can be strongly influenced by the topology of the underlying lattice. In geometrically frustrated spin systems, interesting chiral correlations may develop that are related to the spin arrangeme
Externí odkaz:
http://arxiv.org/abs/cond-mat/0504110