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Observation of a bulk 3D Dirac multiplet, Lifshitz transition, and nestled spin states in Na3Bi
Su-Yang Xu, Chang Liu, S. K. Kushwaha +20
Symmetry or topology protected Dirac fermion states in two and three dimensions constitute novel quantum systems that exhibit exotic physical phenomena. However, none of the studie…
Surface electronic structure of the topological Kondo insulator candidate correlated electron system SmB6
Madhab Neupane, Nasser Alidoust, SuYang Xu +15
The Kondo insulator SmB6 has long been known to exhibit low temperature transport anomalies whose origin is of great interest. Here we uniquely access the surface electronic struct…
Observation of monolayer valence band spin-orbit effect and induced quantum well states (QWS) in MoX2
Nasser Alidoust, Guang Bian, Su-Yang Xu +8
Transition metal dichalcogenides have attracted much attention recently due to their potential applications in spintronics and photonics as a result of the indirect to direct band…
An experimental algorithm for identifying the topological nature of Kondo and mixed valence insulators
M. Neupane, N. Alidoust, Suyang Xu +9
Possible topological nature of Kondo and mixed valence insulators has been a recent topic of interest in condensed matter physics. Attention has focused on SmB6, which has long bee…
Application of a Hough search for continuous gravitational waves on data from the 5th LIGO science run
The LIGO Scientific Collaboration, The Virgo Collaboration, J. Aasi +876
We report on an all-sky search for periodic gravitational waves in the frequency range with the first derivative of frequency in the range $-8.9 \times 10^{-1…
Constraints on cosmic strings from the LIGO-Virgo gravitational-wave detectors
J. Aasi, J. Abadie, B. P. Abbott +873
Cosmic strings can give rise to a large variety of interesting astrophysical phenomena. Among them, powerful bursts of gravitational waves (GWs) produced by cusps are a promising o…
Observation of a topological 3D Dirac semimetal phase in high-mobility Cd3As2
Madhab Neupane, SuYang Xu, R. Sankar +10
Experimental identification of three-dimensional (3D) Dirac semimetals in solid state systems is critical for realizing exotic topological phenomena and quantum transport such as t…
Oscillatory surface dichroism of an insulating topological insulator Bi2Te2Se
M. Neupane, S. Basak, N. Alidoust +16
Using circular dichroism-angle resolved photoemission spectroscopy (CD-ARPES), we report a study of the effect of angular momentum transfer between polarized photons and topologica…
Tunneling Tuned Spin Modulations in Ultrathin Topological Insulator Films
M. Neupane, A. Richardella, J. Sanchez-Barriga +18
Quantitative understanding of the relationship between quantum tunneling and Fermi surface spin polarization is key to device design using topological insulator surface states. By…
Surface electronic structure of a topological Kondo insulator candidate SmB6: insights from high-resolution ARPES
M. Neupane, N. Alidoust, S. -Y. Xu +13
The Kondo insulator SmB6 has long been known to exhibit low temperature (T < 10K) transport anomaly and has recently attracted attention as a new topological insulator candidate. B…