115 citations · 323 across the 11 of their papers we have counts for
11 papers
Spontaneous Breaking of the SU(3) Flavor Symmetry in a Quantum Hall Valley Nematic
G. Krizman, A. Kazakov, C. -W. Cho +10
Two-dimensional quantum materials can host original electronic phases that arise from the interplay of electronic correlations, symmetry and topology. In particular, the spontaneou…
Observation of Weyl and Dirac fermions at smooth topological Volkov-Pankratov heterojunctions
J. Bermejo-Ortiz, G. Krizman, R. Jakiela +6
Weyl and Dirac relativistic fermions are ubiquitous in topological matter. Their relativistic character enables high energy physics phenomena like the chiral anomaly to occur in so…
Interaction between interface and massive states in multivalley topological heterostructures
Gauthier Krizman, Badih A. Assaf, Milan Orlita +5
Topological interface states in multivalley systems are studied to unravel their valley sensitivity. For this purpose, multivalley IV-VI topological crystalline insulator (TCI) het…
Fermi level tuning and band alignment in Mn doped InAs/GaSb
Logan Riney, Joaquin Bermejo-Ortiz, Gauthier Krizman +10
InAs/GaSb hosts a broken gap band alignment that has been shown to generate helical topological edge states. Upon the introduction of Mn into the structure, it has been predicted t…
Negative longitudinal magnetoresistance from anomalous N=0 Landau level in topological materials
B. A. Assaf, T. Phuphachong, E. Kampert +8
Negative longitudinal magnetoresistance (NLMR) is shown to occur in topological materials in the extreme quantum limit, when a magnetic field is applied parallel to the excitation…
Massive and massless Dirac fermions in Pb1-xSnxTe topological crystalline insulator probed by magneto-optical absorption
B. A. Assaf, T. Phuphachong, V. V. Volobuev +5
Dirac fermions in condensed matter physics hold great promise for novel fundamental physics, quantum devices and data storage applications. IV-VI semiconductors, in the inverted re…
Room temperature broadband coherent terahertz emission induced by dynamical photon drag in graphene
J. Maysonnave, S. Huppert, F. Wang +9
Nonlinear couplings between photons and electrons in new materials give rise to a wealth of interesting nonlinear phenomena. This includes frequency mixing, optical rectification o…
Direct surface cyclotron resonance terahertz emission from a quantum cascade structure
François-Régis Jasnot, Louis-Anne De Vaulchier, Yves Guldner +6
A strong magnetic field applied along the growth direction of a semiconductor quantum well gives rise to a spectrum of discrete energy states, the Landau levels. By combining quant…
Evidence for excitonic polarons in InAs/GaAs quantum dots
Vanessa Preisler, Thomas Grange, Robson Ferreira +5
We investigate the interband transitions in several ensembles of self-assembled InAs/GaAs quantum dots by using photoluminescence excitation spectroscopy under strong magnetic fiel…
Hole-LO phonon interaction in InAs/GaAs quantum dots
Vanessa Preisler, Robson Ferreira, Sophie Hameau +4
We investigate the valence intraband transitions in p-doped self-assembled InAs quantum dots using far-infrared magneto-optical technique with polarized radiation. We show that a p…
Linear Temperature Variation of the Penetration Depth in YBCO Thin Films
L. A. de Vaulchier, J. P. Vieren, Y. Guldner +4
We have measured the penetration depth on thin films from transmission at 120, 330 and 510~GHz, between 5 and 50~K. Our data yield simultaneously th…