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Probing the bond order wave phase transitions of the ionic Hubbard model by superlattice modulation spectroscopy
Karla Loida, Jean-Sebastien Bernier, Roberta Citro +2
An exotic phase, the bond order wave, characterized by the spontaneous dimerization of the hopping, has been predicted to exist sandwiched between the band and Mott insulators in s…
Revealing topological Dirac fermions at the surface of strained HgTe thin films via Quantum Hall transport spectroscopy
C. Thomas, O. Crauste, B. Haas +7
We demonstrate evidences of electronic transport via topological Dirac surface states in a thin film of strained HgTe. At high perpendicular magnetic fields, we show that the elect…
Vortex lattice melting in a boson-ladder in artificial gauge field
E. Orignac, R. Citro, M. Di Dio +1
We consider a two-leg boson ladder in an artificial U(1) gauge field and show that, in the presence of interleg attractive interaction, the flux induced Vortex state can be melted…