79 citations · 94 across the 2 of their papers we have counts for
4 papers
Thermoelectric Transport Driven by Quantum Distance
Chang-geun Oh, Kun Woo Kim, Jun-Won Rhim
The geometric characteristics of Bloch wave functions play a crucial role in electronic transport properties. We show that the thermoelectric performance of materials is governed b…
Experimental Observation of Topological Quantum Criticality
Sonja Barkhofen, Syamsundar De, Jan Sperling +5
We report on the observation of quantum criticality forming at the transition point between topological Anderson insulator phases in a one-dimensional photonic quantum walk with sp…
Weyl nodes as topological defects of the Wannier-Stark ladder: From surface to bulk Fermi arcs
Kun Woo Kim, Woo-Ram Lee, Yong Baek Kim +1
A hallmark of Weyl semimetal is the existence of surface Fermi arcs connecting two surface-projected Weyl nodes with opposite chiralities. An intriguing question is what determines…
Shift charge and spin photocurrents in Dirac surface states of topological insulator
Kun Woo Kim, Takahiro Morimoto, Naoto Nagaosa
The generation of photocurrent in condensed matter is of main interest for photovoltaic and optoelectronic applications. Shift current, a nonlinear photoresponse, has attracted rec…