α-RuCl3: A spin-orbit assisted Mott insulator on a honeycomb lattice
نویسندگان
چکیده
K. W. Plumb,1 J. P. Clancy,1 L. J. Sandilands,1 V. Vijay Shankar,1 Y. F. Hu,2 K. S. Burch,1,3 Hae-Young Kee,1,4 and Young-June Kim1,* 1Department of Physics and Center for Quantum Materials, University of Toronto, 60 St. George St., Toronto, Ontario, Canada M5S 1A7 2Canadian Light Source, Saskatoon, Saskatchewan, Canada S7N 0X4 3Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA 4Canadian Institute for Advanced Research, Toronto, Ontario, Canada M5G 1Z8 (Received 18 March 2014; revised manuscript received 30 June 2014; published 29 July 2014)
منابع مشابه
Electronic Structure of the Kitaev Material α-RuCl3 Probed by Photoemission and Inverse Photoemission Spectroscopies
Recently, α-RuCl3 has attracted much attention as a possible material to realize the honeycomb Kitaev model of a quantum-spin-liquid state. Although the magnetic properties of α-RuCl3 have been extensively studied, its electronic structure, which is strongly related to its Kitaev physics, is poorly understood. Here, the electronic structure of α-RuCl3 was investigated by photoemission (PE) and ...
متن کاملTopological insulators and Mott physics from the Hubbard interaction
We investigate the Hubbard model on the honeycomb lattice with intrinsic spin-orbit interactions as a paradigm for two-dimensional topological band insulators in the presence of interactions. Applying a combination of Hartree-Fock theory, slave-rotor techniques, and topological arguments, we show that the topological band insulating phase persists up to quite strong interactions. Then we apply ...
متن کاملAtomic-scale observation of structural and electronic orders in the layered compound α-RuCl3
A pseudospin-1/2 Mott phase on a honeycomb lattice is proposed to host the celebrated two-dimensional Kitaev model which has an elusive quantum spin liquid ground state, and fascinating physics relevant to the development of future templates towards topological quantum bits. Here we report a comprehensive, atomically resolved real-space study by scanning transmission electron and scanning tunne...
متن کاملScattering continuum and possible fractionalized excitations in α-RuCl(3).
The combination of electronic correlation and spin-orbit coupling is thought to precipitate a variety of highly unusual electronic phases in solids, including topological and quantum spin liquid states. We report a Raman scattering study that provides evidence for unconventional excitations in α-RuCl_{3}, a spin-orbit coupled Mott insulator on the honeycomb lattice. In particular, our measureme...
متن کاملTopological states in multi-orbital HgTe honeycomb lattices
Research on graphene has revealed remarkable phenomena arising in the honeycomb lattice. However, the quantum spin Hall effect predicted at the K point could not be observed in graphene and other honeycomb structures of light elements due to an insufficiently strong spin-orbit coupling. Here we show theoretically that 2D honeycomb lattices of HgTe can combine the effects of the honeycomb geomet...
متن کامل