Two-Magnon Bound States in the Kitaev Model in a $[111]$-Field

Subhasree Pradhan, Niravkumar D. Patel, Nandini Trivedi

It is now well established that the Kitaev honeycomb model in a magnetic field along the $[111]$-direction harbors an intermediate gapless quantum spin liquid (QSL) phase sandwiche…