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Broken Kramers' degeneracy in altermagnetic MnTe
Suyoung Lee, Sangjae Lee, Saegyeol Jung +9
Altermagnetism is a newly identified fundamental class of magnetism with vanishing net magnetization and time-reversal symmetry broken electronic structure. Probing the unusual ele…
Direct observation of orbital driven strong interlayer coupling in puckered two-dimensional PdSe2
Jung Hyun Ryu, Jeong-Gyu Kim, Bongjae Kim +6
Interlayer coupling between individual unit layers has played a critical role for layer-dependent properties in two-dimensional (2D) materials. While recent studies have revealed t…
Gapped Nearly Free-Standing Graphene on an SiC(0001) Substrate Induced by Manganese Atoms
Jinwoong Hwang, Ji-Eun Lee, Minhee Kang +4
The electron band structure of manganese-adsorbed graphene on an SiC(0001) substrate has been studied using angle-resolved photoemission spectroscopy. Upon introducing manganese at…
Atomically Abrupt Topological p-n Junction
Sung Hwan Kim, Kyung-Hwan Jin, Byung Woo Kho +4
Topological insulators (TI's) are a new class of quantum matter with extraordinary surface electronic states, which bear great potential for spintronics and error-tolerant quantum…
Experimental Realization of Type-II Dirac Fermions in PdTe Superconductor
Han-Jin Noh, Jinwon Jeong, En-Jin Cho +3
A Dirac fermion in a topological Dirac semimetal is a quadruple-degenerate quasi-particle state with a relativistic linear dispersion. Breaking either time-reversal or inversion sy…
Observation of tunable bandgap and anisotropic Dirac semimetal state in black phosphorus
Jimin Kim, Seung Su Baik, Sae Hee Ryu +7
Black phosphorus consists of stacked layers of phosphorene, a two-dimensional semiconductor with promising device characteristics. We report the realization of a widely tunable ban…
Controlling the 2DEG states evolution at a metal/BiSe interface
Han-Jin Noh, Jinwon Jeong, En-Jin Cho +5
We have demonstrated that the evolution of the two-dimensional electron gas (2DEG) system at an interface of metal and the model topological insulator (TI) BiSe can be cont…