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Possibility of S=1 spin liquids with fermionic spinons on triangular lattices
Zheng-Xin Liu, Yi Zhou, Tai-Kai Ng
In this paper we generalize the fermionic representation for spins to arbitrary spins. Within a mean field theory we obtain several spin liquid states for spin antife…
Raman signature of the U(1) Dirac spin-liquid state in spin-1/2 kagome system
Wing-Ho Ko, Zheng-Xin Liu, Tai-Kai Ng +1
We followed the Shastry--Shraiman formulation of Raman scattering in Hubbard systems and considered the Raman intensity profile in the spin-1/2 "perfect" kagome lattice herbertsmit…
Majorana Fermion Induced Resonant Andreev Reflection
K. T. Law, Patrick A. Lee, T. K. Ng
We describe experimental signatures of Majorana fermion edge states, which form at the interface between a superconductor and the surface of a topological insulator. If a lead coup…
Ginzburg-Landau theory of dirty two band superconductors
Tai-Kai Ng
In this paper we study the effect of non-magnetic impurities on two-band superconductors by deriving the corresponding Ginzburg-Landau (GL) equation. Depending on the str…
Non-Magnetic Impurity induced in-gap bound states in two band superconductors
T. K. Ng, Y. Avishai
In this paper we study the effect of single non-magnetic impurity in two-band s-wave superconductors where the two s-wave order parameters have relative phase between them…
Topologically distinct classes of valence bond solid states with their parent Hamiltonians
Hong-Hao Tu, Guang-Ming Zhang, Tao Xiang +2
We introduce a general method to construct one-dimensional translationally invariant valence bond solid states with a built-in Lie group and derive their matrix product represe…