Relationship Between the Doping-induced States and the Magnetically Excited States at the Mott Transition

The relationship between the doping-induced states in the single-particle spectrum in the small-doping limit and the magnetically excited states of a Mott insulator is investigated based on their quantum numbers and overlaps [1,2]. By using the t-J ladder model, the relationship is explicitly illustrated [1]. The results imply that the Mott transition is characterized by freezing of the charge degrees of freedom while the spin degrees of freedom remain active, which is consistent with the results for the Mott transition in the one- and two-dimensional Hubbard and t-J models [2--5].
[1] M. Kohno, Phys. Rev. B 92, 085129 (2015).
[2] M. Kohno, Phys. Procedia 75, 206 (2015).
[3] M. Kohno, Phys. Rev. Lett. 105, 106402 (2010).
[4] M. Kohno, Phys. Rev. Lett. 108, 076401 (2012).
[5] M. Kohno, Phys. Rev. B 92, 085128 (2015).