Role of Shift Vector in High-Harmonic Generation from Noncentrosymmetric Topological Insulators under Strong Laser Fields

Chen, Qian; Yu, Chao; Jiang, Shicheng; Zhang, Tan; Gao, Jun; Shi, Shang; Pi, Hanqi; Weng, Hongming; Lu, Ruifeng

doi:10.1103/physrevx.12.021030

Cited by 40 publications

(11 citation statements)

References 70 publications

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“…Fundamentally, the BPV process serves as an efficient tool for detecting the electronic topology . Extensive studies on the BPV effect in time-reversal ( scriptT ) invariant systems have been conducted, including their shift current, − injection current, nonlinear Hall current generations, etc . They are rooted in various geometric phases of the electronic wave functions, namely, shift vector, Berry connection, and Berry curvature dipole, respectively.…”

Section: Geometric and Electronic Properties Of Msfesmentioning

confidence: 99%

Tailoring Bulk Photovoltaic Effects in Magnetic Sliding Ferroelectric Materials

2022

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The bulk photovoltaic effect that is intimately associated with crystalline symmetry has been extensively studied in various nonmagnetic materials, especially ferroelectrics with a switchable electric polarization. In order to further engineer the symmetry, one could resort to spin-polarized systems possessing an extra magnetic degree of freedom. Here, we investigate the bulk photovoltaic effect in two-dimensional magnetic sliding ferroelectric (MSFE) systems, illustrated in VSe2, FeCl2, and CrI3 bilayers. The transition metal elements in these systems exhibit intrinsic spin polarization, and the stacking mismatch between the two layers produce a finite out-of-plane electric dipole.Through symmetry analyses and first-principles calculations, we show that photoinduced in-plane bulk photovoltaic current can be effectively tuned by their magnetic order and the out-of-plane dipole moment. The underlying mechanism is elucidated from the quantum metric dipole distribution in the reciprocal space. The ease of the fabrication and manipulation of MSFEs guarantee practical optoelectronic applications.

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Section: Geometric and Electronic Properties Of Msfesmentioning

confidence: 99%

Tailoring Bulk Photovoltaic Effects in Magnetic Sliding Ferroelectric Materials

2022

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“…The dynamic photoinduced charge transfer of G–C was quantified by examining its charge density difference (CDD). 39–42 Fig. 4 and Movie S1 (ESI†) illustrate the CDD real-time calculations of G–C.…”

Section: Resultsmentioning

confidence: 99%

“…The dynamic photoinduced charge transfer of G-C was quantified by examining its charge density difference (CDD). [39][40][41][42] Fig. 4 and Movie S1 (ESI †) illustrate the CDD real-time calculations of G-C. Purple represents photoinduced holes, corresponding to a decreasing region of CDD.…”

Section: Charge Density Differencementioning

confidence: 99%

The dynamical temporal behaviors of guanine–cytosine coherent charge transfer

Zhu

Zhou

Wan

et al. 2023

Phys. Chem. Chem. Phys.

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“…For instance, the second harmonic generation (SHG) has been applied to probe the electronic, magnetic and crystallographic structures of materials [1][2][3][4][5][6][7][8]. The high-harmonic generation (HHG) recently has been intensively studied to reveal the electron dynamics [9], band structures [10] and topological phase transitions [11]. Among various nonlinear optical processes, the bulk photovoltaic effect (BPVE) in noncentrosymmetric materials converting light into a DC current has gained numerous interests [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Magnetic bulk photovoltaic effect as a probe of magnetic structures of $EuSn_2As_2$

Pi¹,

Zhang²,

Weng³

2023

Preprint

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The bulk photovoltaic effect (BPVE) is a second-order optical process in noncentrosymmetric materials that converts the light into DC currents. BPVE is classified into shift current and injection current according to the generation mechanisms, whose dependence on the polarization of light is sensitive to the spatial and time-reversal symmetry of materials. In this work, we present a comprehensive study on the BPVE response of EuSn2As2 with different magnetic structures through symmetry analysis and first-principles calculation. We demonstrate that the interlayer antiferromagnetic (AFM) EuSn2As2 of even-layer breaks the inversion symmetry and has the second-order optical responses. Moreover, the bilayer AFM EuSn2As2 not only displays distinct BPVE responses when magnetic moments align in different directions, but also shows symmetry-related responses in two phases which have mutually perpendicular in-plane magnetic moments. Due to the dependence of BPVE responses on the polarization of light and magnetic symmetry, these magnetic structures can be distinguished by the circular polarized light with well-designed experiments. Our work demonstrates the feasibility of the BPVE response as a tool to probe the magnetic structure.

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Role of Shift Vector in High-Harmonic Generation from Noncentrosymmetric Topological Insulators under Strong Laser Fields

Cited by 40 publications

References 70 publications

Tailoring Bulk Photovoltaic Effects in Magnetic Sliding Ferroelectric Materials

Tailoring Bulk Photovoltaic Effects in Magnetic Sliding Ferroelectric Materials

The dynamical temporal behaviors of guanine–cytosine coherent charge transfer

Magnetic bulk photovoltaic effect as a probe of magnetic structures of $EuSn_2As_2$

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