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Diffusion currents are theoretically examined in two-dimensional Dirac materials, such as those of the transition metal dichalcogenides (TMD) family. The transversal effects are analogues of the valley Hall (VHE) and photogalvanic (PGE)…

介观与纳米尺度物理 · 物理学 2023-03-01 A. V. Snegirev , V. M. Kovalev , M. V. Entin

Memory or transistor devices based on electron's spin rather than its charge degree of freedom offer certain distinct advantages and comprise a cornerstone of spintronics. Recent years have witnessed the emergence of a new field,…

介观与纳米尺度物理 · 物理学 2021-09-13 Md. S. Hossain , M. K. Ma , K. A. Villegas Rosales , Y. J. Chung , L. N. Pfeiffer , K. W. West , K. W. Baldwin , M. Shayegan

Breaking space-time symmetries in two-dimensional crystals (2D) can dramatically influence their macroscopic electronic properties. Monolayer transition-metal dichalcogenides (TMDs) are prime examples where the intrinsically broken crystal…

介观与纳米尺度物理 · 物理学 2015-09-04 Edbert J. Sie , James W. McIver , Yi-Hsien Lee , Liang Fu , Jing Kong , Nuh Gedik

Monolayer transition-metal dichalcogenides (TMDCs) have recently emerged as possible candidates for valleytronic applications, as the spin and valley pseudospin are directly coupled and stabilized by a large spin splitting. In these…

Valleytronics is a rising topic to explore the emergent degree of freedom for charge carriers in energy band edges and has attracted a great interest due to many intriguing quantum phenomena and potential application in information…

Valleytronics is rapidly emerging as an exciting area of basic and applied research. In two dimensional systems, valley polarisation can dramatically modify physical properties through electron-electron interactions as demonstrated by such…

We study the effect of a perpendicular magnetic field on the electronic structure and charge transport of a monolayer MoS$_2$ nanoribbon at zero temperature. We particularly explore the induced valley Zeeman effect through the coupling…

介观与纳米尺度物理 · 物理学 2015-03-03 Habib Rostami , Reza Asgari

Selective control over the emission pattern of valley-polarized excitons in monolayer transition metal dichalcogenides is crucial for developing novel valleytronic, quantum information, and optoelectronic devices. While significant progress…

The dependence of the excitonic photoluminescence (PL) spectrum of monolayer transition metal dichalcogenides (TMDs) on the tilt angle of an applied magnetic field is studied. Starting from a four-band Hamiltonian we construct a theory…

介观与纳米尺度物理 · 物理学 2018-02-23 M. Van der Donck , M. Zarenia , F. M. Peeters

We provide a precise microscopic definition of the recently observed "Inverse Edelstein Effect" (IEE), in which a non-equilibrium spin accumulation in the plane of a two-dimensional (interfacial) electron gas drives an electric current…

介观与纳米尺度物理 · 物理学 2014-03-11 Ka Shen , G. Vignale , R. Raimondi

Monolayer transition metal dichalcogenides, known for exhibiting strong excitonic resonances, constitute a very interesting and versatile platform for investigation of light-matter interactions. In this work we report on a strong coupling…

介观与纳米尺度物理 · 物理学 2019-05-20 M. Król , K. Lekenta , R. Mirek , K. Łempicka , D. Stephan , K. Nogajewski , M. R. Molas , A. Babiński , M. Potemski , J. Szczytko , B. Piętka

Altermagnetism exhibits advantages over both ferromagnetic and antiferromagnetic counterparts by enabling spin splitting within antiferromagnetic materials. Currently, it is established that valley polarization in altermagnetism remains…

材料科学 · 物理学 2024-10-24 Chen Chen , Xiaoyang He , Qizhen Xiong , Chuye Quan , Haojie Hou , Shilei Ji , Jianping Yang , Xing'ao Li

Strong spin-orbit coupling and inversion symmetry breaking in transition metal dichalcogenide monolayers yield the intriguing effects of valley-dependent optical selection rules. As such, it is possible to substantially polarize valley…

Magnetic field is a powerful tool for the manipulation of material's electronic and optical properties. In the domain of transition metal dichalcogenide monolayers, it allows one to unveil the spin, valley, and orbital properties of…

介观与纳米尺度物理 · 物理学 2024-06-10 A. Kudlis , I. A. Aleksandrov , K. Varga , I. A. Shelykh , V. Shahnazaryan

We study both the intrinsic and extrinsic spin Hall effect in spin-valley coupled monolayers of transition metal dichalcogenides. We find that whereas the skew-scattering contribution is suppressed by the large band gap, the side-jump…

介观与纳米尺度物理 · 物理学 2013-09-20 Wen-Yu Shan , Hai-Zhou Lu , Di Xiao

Valleytronics targets the exploitation of the additional degrees of freedom in materials where the energy of the carriers may assume several equal minimum values (valleys) at non-equivalent points of the reciprocal space. In single layers…

Transition metal dichalcogenides provide a platform for exploring spin-valley physics, offering a promising approach to electric-field-driven spin control for low-power spintronic and quantum devices. Here, we demonstrate…

介观与纳米尺度物理 · 物理学 2026-05-26 Min-Gue Kim , Min-Sik Kim , Kenji Watanabe , Takashi Taniguchi , Ju-Jin Kim , Myung-Ho Bae

Based on a Dirac-like Hamiltonian and coherent scattering formalism, we study spin-valley transport and Goos-H\"{a}nchen like (GHL) effect of transmitted and reflected electrons in a gated monolayer WS$_2$. Our results show that the lateral…

介观与纳米尺度物理 · 物理学 2017-02-10 Hassan Ghadiri , Alireza Saffarzadeh

Coulomb interaction between electrons lies at the heart of magnetism in solids. In contrast to conventional two-dimensional (2D) systems, electrons in monolayer transition metal dichalcogenides (TMDs) possess coupled spin and valley degrees…

介观与纳米尺度物理 · 物理学 2018-02-14 Zefang Wang , Kin Fai Mak , Jie Shan

We consider theoretically staggered honeycomb lattices for photons which can be viewed as photonic analogs of transitional metal dichalcogenides (TMD) monolayers. We propose a simple realization of a photonic Quantum Valley Hall effect…

介观与纳米尺度物理 · 物理学 2017-07-05 O. Bleu , D. D. Solnyshkov , G. Malpuech