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We present the electron tunneling transport and spectroscopic characters of a superconducting Josephson junction with a barrier of single Kitaev quantum spin liquid (QSL) layer. We find that the dynamical spin correlation features are well reflected in the direct current differential conductance dI_c/dV of the single-particle tunneling with an energy shift of superconducting gap sum 2{Delta}, including the unique spin gap and dressed itinerant Majorana dispersive band, which can be regarded as evidence of the Kitaev QSL. However, the zero-voltage Josephson current I_s only displays some residual features of dynamical spin susceptibility in the Kitaev QSL due to the spin singlet of Cooper pairs. These results pave a new way to measure the dynamical spinon or Majorana fermion spectroscopy of the Kitaev and other spin liquid materials.
Usual paradigm in the theory of electron transport is related to the fact that the dielectric permittivity of the insulator is assumed to be constant, no time dispersion. We take into account the slow polarization dynamics of the dielectric layers in
Recent experimental evidence for a field-induced quantum spin liquid (QSL) in $alpha$-RuCl$_3$ calls for an understanding for the ground state of honeycomb Kitaev model under a magnetic field. In this work we address the nature of an enigmatic gaples
Motivated by recent experiments on $alpha$-RuCl$_3$, we investigate a possible quantum spin liquid ground state of the honeycomb-lattice spin model with bond-dependent interactions. We consider the $K-Gamma$ model, where $K$ and $Gamma$ represent the
Motivated by recent synthesis of the hyper-honeycomb material $beta$-$mathrm{Li_2 Ir O_3}$, we study the dynamical structure factor (DSF) of the corresponding 3D Kitaev quantum spin-liquid (QSL), whose fractionalised degrees of freedom are Majorana f
The search for fractionalization in quantum spin liquids largely relies on their decoupling with the environment. However, the spin-lattice interaction is inevitable in a real setting. While the Majorana fermion evades a strong decay due to the gradi