Article
Chemistry, Multidisciplinary
Chenlu He, Yan Li
Summary: This article reviews the historical research on circularly polarized light (CPL)-induced absolute asymmetric synthesis, including chiral organic molecules, helical polymers, supramolecular assemblies, and noble metal nanostructures. However, based on these results, it is concluded that the chiral photon-matter interaction is very weak, resulting in a very small enantiomeric excess for the product. Therefore, the recently emerged superchiral field technology, which can enhance the dissymmetry of the optical field and near-field, is highlighted.
CHINESE CHEMICAL LETTERS
(2023)
Review
Polymer Science
Jun Su Kang, Namhee Kim, Taehyung Kim, Myungeun Seo, Byeong-Su Kim
Summary: This review discusses the introduction of asymmetry into a supramolecular system via external chiral stimuli and the mechanisms of photon-to-matter chirality transfer at the supramolecular level. It also covers asymmetric photochemical reactions and the creation of a chiral bias upon CPL irradiation.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Minkyung Kim, Dasol Lee
Summary: In this study, the interface-independent and strengthened spin Hall effect of light was achieved by using a single-layered dielectric metasurface. Numerical simulation results confirmed that the anisotropic geometry of the metasurface induced phase-reversed reflection for one linear polarization and phase-preserved reflection for the other, thereby strongly strengthening the reflection of the spin-Hall-shifted beam. Our work will pave a route toward the precise displacement of the beam at the nanoscale without perturbing its polarization state.
Article
Physics, Multidisciplinary
S. H. Guan, Y. Yang, Z. Jin, T. T. Liu, Y. Liu, M. H. Qin
Summary: The study investigates the dynamics of skyrmions in antiferromagnets driven by circularly polarized spin waves and proposes a method to suppress Hall motion. It is found that using two circularly polarized spin waves with opposite chirality allows skyrmions to move straightly and the speed depends on the parameters of the spin waves and system. Two depinning behaviors related to defect strengths are observed, indicating the potential for precise modulation of skyrmion dynamics in memory device design.
FRONTIERS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Yong Li, Yanjun Liu, Dan Luo
Summary: This study demonstrates a photo-responsive liquid crystal elastomer (LCE) actuator driven by circularly polarized light. The actuator is composed of a cholesteric liquid crystal (CLC) film capable of reflecting and transmitting circularly polarized light, and a photothermal agent doped LCE film in a bilayer structure. An electrically controlled optical system with fast switching ability of circularly polarized light's handedness was developed to investigate the bending property of the proposed actuator under different periodic voltage schemes.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
A. Friedlan, M. M. Dignam
Summary: This paper presents a detailed theoretical study of valley polarization in biased bilayer graphene, showing that nearly perfect valley polarization can be achieved with the proper choices of external bias and pulse frequency. Valley polarization originates from a ring of states surrounding each rather than from the Dirac points, and intervalley scattering and thermal populations can greatly reduce valley polarization. This work provides insight into the origin of valley polarization in bilayer graphene and will help experimentalists studying valley polarization in the laboratory.
Article
Optics
Minkyung Kim, Dasol Lee, Junsuk Rho
Summary: This study proves that the spin Hall effect of light is independent of incident polarization and symmetrical in shift when the two linear polarization states have the same Fresnel coefficients. Under unpolarized incidence, the reflected beam is split into two circularly polarized components that undergo the same amount of splitting in opposite directions.
LASER & PHOTONICS REVIEWS
(2021)
Article
Nanoscience & Nanotechnology
Lu-Lu Chang, Qing-Ping Wu, Yu-Zeng Li, Ruo-Long Zhang, Mei-Rong Liu, Wan-Ying Li, Fei-Fei Liu, Xian-Bo Xiao, Zheng-Fang Liu
Summary: This study proposed a scheme to induce valley polarized current in a graphene junction using circularly polarized light and carrier mass. The results showed that pure valley-polarized current can be achieved in the presence of both circularly polarized light and carrier mass. However, if only one of the two modulations is present, valley polarization cannot be generated.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2021)
Article
Chemistry, Multidisciplinary
Anemar Bruno Kanj, Jochen Buerck, Nina Vankova, Chun Li, Dragos Mutruc, Abhinav Chandresh, Stefan Hecht, Thomas Heine, Lars Heinke
Summary: The study introduces a nanoporous solid material that induces chirality and enantioselective enrichment through circularly polarized light. Based on a crystalline metal-organic framework, the material utilizes photoswitchable fluorinated azobenzenes to induce chirality through trans-to-cis photoisomerization. Experimental results demonstrate that CPL causes chiral photoresolution, resulting in an optically active material.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Kuen Wai Tang, Bob Minyu Wang, Henry Clark Travaglini, Dong Yu
Summary: This study rigorously simulated the helicity-dependent photocurrent under local helical photoexcitation using a finite element method, revealing that the electromotive force induced by ISHE is inversely proportional to the doping level of the material. Near the metal contact, the helicity-dependent photocurrent may either increase or decrease due to the competing mechanisms of fast carrier recombination and spin relaxation at the contact point.
Article
Materials Science, Multidisciplinary
Hongdan Wang, Yang Liu, Lingling Wang, Bikshapathi Raktani, Taehun Yang, Kim My Tran, Yongguang Luo, Jianmin Yu, Haksung Lee, Hyoyoung Lee
Summary: Using a new supramolecular organogel, helical nanoribbons with high helicity degree can be generated by irradiating with right- or left-circularly polarized light. The helical direction of the nanoribbons can be controlled by the direction of the circularly polarized light. This concept has potential applications in biology, pharmacology, and chiral optics.
ACS MATERIALS LETTERS
(2022)
Article
Multidisciplinary Sciences
Inho Song, Jaeyong Ahn, Hyungju Ahn, Sang Hyuk Lee, Jianguo Mei, Nicholas A. Kotov, Joon Hak Oh
Summary: In this study, a simple and powerful method was used to fabricate chiroptical flexible layers through supramolecular helical ordering of conjugated polymer chains. The multiscale chirality and optical activity of these layers can be varied across a broad spectral range by chiral templating. After template removal, chromophores remain in one-dimensional helical nanofibrils, producing a homogeneous chiroptical layer with drastically enhanced polarization-dependent absorbance, enabling well-resolved detection and visualization of the spin angular momentum (SAM) of photons. This study provides a scalable path towards on-chip detection of the spin degree of freedom of photons necessary for encoded quantum information processing and high-resolution polarization imaging.
Article
Chemistry, Multidisciplinary
Zhaoming Zhang, Takunori Harada, Adriana Pietropaolo, Yuting Wang, Yue Wang, Xiao Hu, Xuehan He, Hui Chen, Zhiyi Song, Masayoshi Bando, Tamaki Nakano
Summary: Circularly polarized light irradiation induced preferred-handed propeller conformation in three amorphous molecules with trigonal symmetry, leading to efficient blue circularly polarized luminescence in the molecules with induced chirality. Chirality was amplified in both chirality induction and luminescence processes due to intermolecular interactions through pi-stacking.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Chang-Chun Fan, Xiang-Bin Han, Bei-Dou Liang, Chao Shi, Le-Ping Miao, Chao-Yang Chai, Cheng-Dong Liu, Qiong Ye, Wen Zhang
Summary: A pair of 2D chiral perovskite ferroelectrics with enhanced CPL detection performance have been reported in this study, achieved through the chirality-transfer-induced chiral&polar ferroelectric phase.
ADVANCED MATERIALS
(2022)
Article
Optics
Jiho Hong, Jorik Van De Groep, Nayeun Lee, Soo Jin Kim, Philippe Lalanne, Pieter G. Kik, Mark L. Brongersma
Summary: Modern sensing and imaging applications require accurate measurements of light wave properties such as intensity, wavelength, directionality, and polarization. This study demonstrates the use of engineered optical resonances in nanostructures to achieve selective detection of circularly polarized light. By patterning a thin silicon layer into a dislocated nanowire-array, it is possible to detect circularly polarized light with high efficiency. The presence of periodic dislocations enables selective excitation of nonlocal, guided-mode resonances for one handedness of light.
Article
Physics, Applied
Evgeny Sedov, Mikhail Glazov, Alexey Kavokin
Summary: In this paper, we propose a method for exciting polariton Tamm states with a controllable nontrivial topology. By applying an external magnetic field on the interface of specific point group photonic crystals, the dispersion of Tamm polaritons can be made asymmetric. The phenomenology of Tamm polariton currents resembles that of a Z(2) topological insulator and the proposed structure can act as an optical spin splitter controlled by the magnetic field magnitude.
PHYSICAL REVIEW APPLIED
(2022)
Article
Materials Science, Multidisciplinary
M. M. Glazov
Summary: This study develops a theory of the valley and spin Hall effects and the resulting accumulation of the valley and spin polarization. It investigates the electron transport in both the ballistic and hydrodynamic regimes, taking into account the effects of anomalous velocity, side-jump, and skew scattering. The polarization magnitude and spatial distribution strongly depend on the transport regime, with significantly larger polarization in the hydrodynamic regime and notable valley and spin polarization near the channel edges due to side-jump and skew scattering mechanisms.
Article
Chemistry, Multidisciplinary
Vasilii V. Belykh, Mikhail L. Skorikov, Evgeniya V. Kulebyakina, Elena V. Kolobkova, Maria S. Kuznetsova, Mikhail M. Glazov, Dmitri R. Yakovlev
Summary: Lead halide perovskite nanocrystals in a glass matrix show excellent optical properties and stability, making them a promising platform for optoelectronic applications. By studying the electron spin properties of these nanocrystals, we uncover their potential for spintronics.
Article
Multidisciplinary Sciences
Robin Huber, Max-Niklas Steffen, Martin Drienovsky, Andreas Sandner, Kenji Watanabe, Takashi Taniguchi, Daniela Pfannkuche, Dieter Weiss, Jonathan Eroms
Summary: In this study, band conductivity oscillations in a graphene superlattice were experimentally observed. These oscillations are governed by the internal structure of the Hofstadter butterfly (Brown-Zak oscillations) and a commensurability relation between the electron cyclotron radius and the superlattice period (Weiss oscillations). A complete description of the oscillations in two-dimensional superlattices was obtained, showing a detailed match between theory and experiment.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
E. Kirstein, D. R. Yakovlev, M. M. Glazov, E. A. Zhukov, D. Kudlacik, I. Kalitukha, V. F. Sapega, G. S. Dimitriev, M. A. Semina, M. O. Nestoklon, E. L. Ivchenko, N. E. Kopteva, D. N. Dirin, O. Nazarenko, M. Kovalenko, A. Baumann, J. Hoecker, V Dyakonov, M. Bayer
Summary: This study presents experimental data for the values and anisotropies of the electron and hole Lande factors in lead halide perovskite materials, and shows their universal dependence on the band gap energy.
NATURE COMMUNICATIONS
(2022)
Biographical-Item
Physics, Applied
Alexel Kalaboukhov, Oleg V. Snigirev, Andrey L. Pankratov, Dag Winkler, Tord Claeson, Konstantin K. Likharev, Sergey Kubatkin
JOURNAL OF LOW TEMPERATURE PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Koloman Wagner, Zakhar A. Iakovlev, Jonas D. Ziegler, Marzia Cuccu, Takashi Taniguchi, Kenji Watanabe, Mikhail M. Glazov, Alexey Chernikov
Summary: This study demonstrates the diffusion of excitons in a monolayer semiconductor with a continuously tunable Fermi sea of free charge carriers. The light emission from tightly bound exciton states in electrically gated WSe2 monolayer is detected using microscopy. The measurements reveal a nonmonotonic dependence of the exciton diffusion coefficient on the charge carrier density.
Article
Multidisciplinary Sciences
E. Kirstein, N. E. Kopteva, D. R. Yakovlev, E. A. Zhukov, E. V. Kolobkova, M. S. Kuznetsova, V. V. Belykh, I. A. Yugova, M. M. Glazov, M. Bayer, A. Greilich
Summary: The spin dynamics and interaction of confined electrons or holes in perovskite nanocrystals are investigated using time resolved optical spectroscopy. Spin mode locking effect and nuclear focusing are observed in CsPb(Cl0.56Br0.44)(3) lead halide perovskite nanocrystals embedded in a glass matrix. The measured spin coherence time and spin dephasing time are 13 ns and a nanosecond respectively, and the developed theoretical model agrees well with the experimental data.
NATURE COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Z. A. Iakovlev, M. M. Glazov
Summary: The fine structure of attractive Fermi polarons in van der Waals heterostructures based on monolayer TMDs in the presence of elastic strain is studied theoretically. The strain-induced fine structure splitting in neutral excitons is absent in charged excitons (trions). The fine structure splitting of the attractive Fermi polaron is proportional to both the excitonic splitting and the Fermi energy.
Article
Nanoscience & Nanotechnology
Naveen Shetty, Hans He, Richa Mitra, Johanna Huhtasaari, Konstantina Iordanidou, Julia Wiktor, Sergey Kubatkin, Saroj P. Dash, Rositsa Yakimova, Lunjie Zeng, Eva Olsson, Samuel Lara-Avila
Summary: We introduce a reliable and scalable method for fabricating electrical contacts to two-dimensional materials using a tri-layer resist system. This method produces high-quality contacts in devices based on epitaxial graphene on silicon carbide and enables field-effect transistor behavior in transition metal dichalcogenide molybdenum disulfide. The demonstrated fabrication route offers flexibility in contact metallization and is crucial for practical devices and studying emerging materials' electrical properties.
ACS APPLIED NANO MATERIALS
(2023)
Article
Instruments & Instrumentation
Naveen Shetty, Tobias Bergsten, Gunnar Eklund, Samuel Lara Avila, Sergey Kubatkin, Karin Cedergren, Hans He
Summary: In this work, a simple and stable long-term storage technique for epitaxial graphene quantum Hall resistance standards is developed and tested, using readily available materials as the storage environment. The technique shows high stability and can remove barriers for the widespread use of these standards in practical metrology.
Editorial Material
Nanoscience & Nanotechnology
Mikhail M. Glazov
NATURE NANOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Marina A. Semina, Javid Mamedov, Mikhail M. Glazov
Summary: We theoretically study neutral and charged excitons, also known as trions, in transition metal dichalcogenides monolayers. We focus on the situation where one of the electrons occupies an excited, high-lying, conduction band characterized by a negative effective mass. We develop the theory for high-lying excitons and trions with negative effective mass and investigate the role of non-parabolicity in the formation of bound states. We also propose simple and accurate trial wavefunctions for calculating the binding energies and compare the results with numerical calculations.
OXFORD OPEN MATERIALS SCIENCE
(2023)
Article
Physics, Applied
G. Kourmoulakis, A. Michail, I. Paradisanos, X. Marie, M. M. Glazov, B. Jorissen, L. Covaci, E. Stratakis, K. Papagelis, J. Parthenios, G. Kioseoglou
Summary: In this study, we investigate the impact of biaxial tensile strain on the optical properties of WS2 monolayers using micro-photoluminescence and Raman experiments. Our findings reveal a significant shift in the neutral exciton emission energy, as well as a decrease in circular polarization degree under the applied strain. Through experimental analysis, we separate the effect of strain-induced energy detuning and evaluate the pure effect of biaxial strain. Our analysis suggests that the suppression of circular polarization degree under biaxial strain is influenced by an interplay of energy and polarization relaxation channels, as well as changes in the exciton oscillator strength affecting the long-range exchange interaction.
APPLIED PHYSICS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
L. E. Golub, M. M. Glazov
Summary: We theoretically demonstrate that electromagnetic waves propagating in the transparency region of a noncentrosymmetric medium can generate a direct current. The Raman scattering of light by free carriers in the system is responsible for this effect.
