Spin-gap phase of a quantum spin system on a honeycomb lattice
نویسندگان
چکیده
منابع مشابه
Quantum spin metal state on a decorated honeycomb lattice.
We present a modification of the exactly solvable spin-(1/)2 Kitaev model on the decorated honeycomb lattice, with a ground state of "spin metal" type. The model is diagonalized in terms of Majorana fermions; the latter form a 2D gapless state with a Fermi circle whose size depends on the ratio of exchange couplings. Low-temperature heat capacity C(T) and dynamic spin susceptibility χ(ω,T) are ...
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Frustrated magnetic materials, in which local conditions for energy minimization are incompatible because of the lattice structure, can remain disordered to the lowest temperatures. Such is the case for Ba(3)CuSb(2)O(9), which is magnetically anisotropic at the atomic scale but curiously isotropic on mesoscopic length and time scales. We find that the frustration of Wannier's Ising model on the...
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Shou-Shu Gong,1 D. N. Sheng,1 Olexei I. Motrunich,2 and Matthew P. A. Fisher3 1Department of Physics and Astronomy, California State University, Northridge, California 91330, USA 2Department of Physics, California Institute of Technology, Pasadena, California 91125, USA 3Department of Physics, University of California, Santa Barbara, California 93106-9530, USA (Received 3 July 2013; published 2...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.74.140402