9 papers
Lifshitz transition in a holographic finite density flavour brane Weyl semimetal
Cheng-Yuan Lu, Xian-Hui Ge, Sang-Jin Sin
We extend a top-down holographic model of a Weyl semimetal to finite charge density and compute the fermionic spectral function by introducing two probe fermions of opposite chiral…
Tilted Dirac cones and their topology in Holographic Materials
Jeong-Won Seo, Taewon Yuk, Sang-Jin Sin
We explore strongly correlated materials with tilted Dirac cone by introducing a method to realize this spectral feature within a holographic setup. Following the work by Moradpour…
Topology in Holographic Mean-Field Theory at Zero and Finite Temperature
Moongul Byun, Taewon Yuk, Young-Kwon Han +2
We investigate topological invariants in strongly interacting many-body systems within holographic mean-field theory (H-MFT) framework. Analytic expressions for retarded Green's fu…
Hall Angle of a Spatially Random Vector Model
Yi-Li Wang, Young-Kwon Han, Xian-Hui Ge +1
Strange metals exhibit linear resistivity and anomalous Hall transport, yet a comprehensive theory that accounts for both phenomena is still lacking. Recent studies have shown SYK-…
Symmetric Tensor Coupling in Holographic Mean-Field Theory: Deformed Dirac Cones
Moongul Byun, Taewon Yuk, Sang-Jin Sin
We extend the holographic mean-field theory to rank-two symmetric tensor field as an external source coupled with fermion. We classify the roles of symmetric tensor coupling accord…
Topological transition as a percolation of the Berry curvature
Han-Byul Kim, Taewon Yuk, Sang-Jin Sin
We first study the importance of the sign of the Berry curvature in the Euler characteristic of the two-dimensional topological material with two bands. Then we report an observati…