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70 papers
Unusual surface states associated with the PT-symmetry breaking and antiferromagnetic band folding in NdSb
Asuka Honma, Daichi Takane, Seigo Souma +8
We have performed micro-focused angle-resolved photoemission spectroscopy on NdSb which exhibits the type-I antiferromagnetism below TN = 16 K. We succeeded in selectively observin…
Surface-termination-dependent electronic states in kagome superconductors AV3Sb5 (A = K, Rb, Cs) studied by micro-ARPES
Takemi Kato, Yongkai Li, Min Liu +9
Recently discovered kagome superconductors AV3Sb5 (A = K, Rb, Cs) exhibit exotic bulk and surface physical properties such as charge-density wave (CDW) and chirality, whereas their…
Charge order with unusual star-of-David lattice in monolayer NbTe2
Taiki Taguchi, Katsuaki Sugawara, Hirofumi Oka +8
Interplay between fermiology and electron correlation is crucial for realizing exotic quantum phases. Transition-metal dichalcogenide (TMD) 1T-TaS2 has sparked a tremendous attenti…
Fermiology of a topological line-nodal compound CaSb2 and its implication to superconductivity: angle-resolved photoemission study
Chien-Wen Chuang, Seigo Souma, Ayumi Moriya +17
We performed angle-resolved photoemission spectroscopy with micro-focused beam on a topological line-nodal compound CaSb2 which undergoes a superconducting transition at the onset…
Polarity-dependent charge-density wave in a kagome superconductor CsV3Sb5
Takemi Kato, Yongkai Li, Kosuke Nakayama +7
Polar surface and interface play a pivotal role for realizing exotic properties of materials, and a search for such polar states is of crucial importance for expanding materials' f…
Three-dimensional energy gap and origin of charge-density wave in kagome superconductor KV3Sb5
Takemi Kato, Yongkai Li, Tappei Kawakami +8
Kagome lattices offer a fertile ground to explore exotic quantum phenomena associated with electron correlation and band topology. The recent discovery of superconductivity coexist…