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Expeditious computation of nonlinear optical properties of arbitrary order with native electronic interactions in the time domain
Emilia Ridolfi, Paolo E. Trevisanutto, Vitor M. Pereira
We adapted a recently proposed framework to characterize the optical response of interacting electrons in solids in order to expedite its computation without compromise in accuracy…
Purely rotational symmetry-protected topological crystalline insulator -Bi4Br4
Chuang-Han Hsu, Xiaoting Zhou, Qiong Ma +7
Recent theoretical advances have proposed a new class of topological crystalline insulator (TCI) phases protected by rotational symmetries. Distinct from topological insulators (TI…
Nonlinear magnetotransport shaped by Fermi surface topology and convexity in WTe2
Pan He, Chuang-Han Hsu, Shuyuan Shi +7
The nature of Fermi surface defines the physical properties of conductors and many physical phenomena can be traced to its shape. Although the recent discovery of a current-depende…
Measuring valley polarization in two-dimensional materials with second-harmonic spectroscopy
Yi Wei Ho, Henrique Guimarães Rosa, Ivan Verzhbitskiy +6
A population imbalance at different valleys of an electronic system lowers its effective rotational symmetry. We introduce a technique to measure such imbalance - a valley polariza…