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Anomalous hall effect
We present a review of experimental and theoretical studies of the anomalous Hall effect (AHE), focusing on recent developments that have provided a more complete framework for understanding this
Ultrahigh mobility and giant magnetoresistance in the Dirac semimetal Cd3As2.
This work reports a property of Cd3As2 that was unpredicted, namely a remarkable protection mechanism that strongly suppresses backscattering in zero magnetic field and discusses how this may relate to changes to the Fermi surface induced by the applied magnetic field.
Large, non-saturating magnetoresistance in WTe2
The observation of an extremely large positive magnetoresistance at low temperatures in the non-magnetic layered transition-metal dichalcogenide WTe2 is reported, which will represent a significant new direction in the study of magnetoresistivity.
A tunable topological insulator in the spin helical Dirac transport regime
The results reveal a spin-momentum locked Dirac cone carrying a non-trivial Berry’s phase that is nearly 100 per cent spin-polarized, which exhibits a tunable topological fermion density in the vicinity of the Kramers point and can be driven to the long-sought topological spin transport regime.
Superconductivity in CuxBi2Se3 and its implications for pairing in the undoped topological insulator.
It is shown that copper intercalation in the van der Waals gaps between the Bi2Se3 layers, yielding an electron concentration of approximately 2x10{20} cm{-3}, results in superconductivity at 3.8 K in CuxBi2 Se3 for 0.12<or=x<or =0.15.
Nernst effect in high-Tc superconductors
The observation of a large Nernst signal $e_N$ in an extended region above the critical temperature $T_c$ in hole-doped cuprates provides evidence that vortex excitations survive above $T_c$. The
Quantum Oscillations and Hall Anomaly of Surface States in the Topological Insulator Bi2Te3
The observation of Shubnikov–de Haas oscillations arising from the surface states in nonmetallic crystals of Bi2Te3 are reported and a Hall anomaly in weak fields is uncovered, which enables the surface current to be seen directly and yield a surface mobility substantially higher than in the bulk.
Extreme sensitivity of superconductivity to stoichiometry in Fe1+δSe
The recently discovered iron arsenide superconductors appear to display a universal set of characteristic features, including proximity to a magnetically ordered state and robustness of the
Development of Ferromagnetism in the Doped Topological Insulator Bi 2-x Mn x Te 3
The development of ferromagnetism in Mn-doped Bi_2Te_3 is characterized through measurements on a series of single crystals with different Mn content. Scanning tunneling microscopy analysis shows
Superconductivity in CuxTiSe2
Charge density waves (CDWs) are periodic modulations of the density of conduction electrons in solids. They are collective states that arise from intrinsic instabilities often present in