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7 papers · 2 filters
Linear Response Theory and Optical Conductivity of Floquet Topological Insulators
Abhishek Kumar, M. Rodriguez-Vega, T. Pereg-Barnea +1
Motivated by the quest for experimentally accessible dynamical probes of Floquet topological insulators, we formulate the linear response theory of a periodically driven system. We…
Optical excitation of atomic force microscopy cantilever for accurate spectroscopic measurements
Yoichi Miyahara, Harrisonn Griffin, Antoine Roy-Gobeil +4
Reliable operation of frequency modulation mode atomic force microscopy (FM-AFM) depends on a clean resonance of an AFM cantilever. It is recognized that the spurious mechanical re…
Detecting topological edge states with the dynamics of a qubit
Meri Zaimi, Christian Boudreault, Nouédyn Baspin +4
We consider the Su-Schrieffer-Heeger (SSH) chain, which has 0, 1, or 2 topological edge states depending on the ratio of the hopping parameters and the parity of the chain length.…
Tunable skyrmion-skyrmion binding on the surface of a topological insulator
Kunal L. Tiwari, J. Lavoie, T. Pereg-Barnea +1
We show that skyrmions on the surface of a magnetic topological insulator may experience an attractive interaction that leads to the formation of a skyrmion-skyrmion bound state. T…
Hole-Spin-Echo Envelope Modulations
Pericles Philippopoulos, Stefano Chesi, Joe Salfi +2
Hole spins in semiconductor quantum dots or bound to acceptor impurities show promise as potential qubits, partly because of their weak and anisotropic hyperfine couplings to proxi…
Quantitative Measurements of Giant and Quantized Microwave Faraday Rotation
Vishnunarayanan Suresh, Edouard Pinsolle, Christian Lupien +6
We report {\it quantitative} microwave Faraday rotation measurements conducted with a high-mobility two-dimensional electron gas (2DEG) in a GaAs/AlGaAs semiconductor heterostructu…