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Molecular transistor coupled to phonons and Luttinger-liquid leads
So Takei, Yong Baek Kim, Aditi Mitra
We study the effects of electron-phonon interactions on the transport properties of a molecular quantum dot coupled to two Luttinger-liquid leads. In particular, we investigate the…
U(1) spin liquids and valence bond solids in a large-N three-dimensional Heisenberg model
Jean-Sebastien Bernier, Ying-Jer Kao, Yong Baek Kim
We study possible quantum ground states of the Sp(N) generalized Heisenberg model on a cubic lattice with nearest-neighbor and next-nearest-neighbor exchange interactions. The phas…
Itinerant metamagnetism induced by electronic nematic order
Hae-Young Kee, Yong Baek Kim
It is shown that metamagnetic transition in metals can occur via the formation of electronic nematic order. We consider a simple model where the spin-dependent Fermi surface instab…
Evolution of the single-hole spectral function across a quantum phase transition in the anisotropic-triangular-lattice antiferromagnet
So Takei, Chung-Hou Chung, Yong Baek Kim
We study the evolution of the single-hole spectral function when the ground state of the anisotropic-triangular-lattice antiferromagnet changes from the incommensurate magnetically…