60 citations · 215 across the 9 of their papers we have counts for
10 papers
Probing the Penetration Depth of Topological Surface States by Magnetic Impurity Scattering in V-doped SbTe
Yidi Wang, Zeyu Ma, Pengcheng Chen +11
Topological insulators host Dirac surface states (SS) protected by time-reversal symmetry. Inter-surface hybridization can gap the SS and give rise to the quantum spin Hall effect…
Visualizing the atomic-scale origin of metallic behavior in Kondo insulators
Harris Pirie, Eric Mascot, Christian E. Matt +12
A Kondo lattice is often electrically insulating at low temperatures. However, several recent experiments have detected signatures of bulk metallicity within this Kondo insulating…
Probing Image Potential States on Topological Semimetal Antimony Surface
Jian-Feng Ge, Haimei Zhang, Yang He +4
A point charge near the surface of a topological insulator (TI) with broken time-reversal symmetry is predicted to generate an image magnetic charge in addition to an image electri…
Imaging emergent heavy Dirac fermions of a topological Kondo insulator
Harris Pirie, Yu Liu, A. Soumyanarayanan +12
Kondo insulators are primary candidates in the search for strongly correlated topological quantum phases, which may host topological order, fractionalization, and non-Abelian stati…
Unexpected Zero Bias Conductance Peak on the Topological Semimetal Sb(111) with a Broken Bilayer
Yau-Chuen Yam, Shiang Fang, Pengcheng Chen +9
The long-sought Majorana fermion is expected to manifest in a topological-superconductor heterostructure as a zero bias conductance peak (ZBCP). As one promising platform for such…
Consistency between ARPES and STM measurements on SmB
Christian E. Matt, Harris Pirie, Anjan Soumyanarayanan +7
Strongly correlated topological surface states are promising platforms for next-generation quantum applications, but they remain elusive in real materials. The correlated Kondo ins…
Effects of ferroelectric polarization on surface phase diagram: an evolutionary algorithm study of the BaTiO(001) surface
Pengcheng Chen, Yong Xu, Na Wang +2
We have constructed the surface phase diagram of the BaTiO(001) surface by employing an evolutionary algorithm for surface structure prediction, where the ferroelectric polar…
High- ferromagnetism in a doped Mott insulator: the case of hydrogenated epitaxial graphene on SiC(0001)
Pengcheng Chen, Yuanchang Li, Wenhui Duan
We show that the ferromagnetism with high Curie temperature () can be achieved in the electron doped hydrogenated epitaxial graphene on some certain SiC substrates thr…
Stable two-dimensional dumbbell stanene: a quantum spin Hall insulator
Peizhe Tang, Pengcheng Chen, Wendong Cao +7
We predict from first-principles calculations a novel structure of stanene with dumbbell units (DB), and show that it is a two-dimensional topological insulator with inverted band…
Dirac Fermion in Strongly-Bound Graphene Systems
Yuanchang Li, Pengcheng Chen, Gang Zhou +5
It is highly desirable to integrate graphene into existing semiconductor technology, where the combined system is thermodynamically stable yet maintain a Dirac cone at the Fermi le…