Article
Chemistry, Physical
Preeti Bhumla, Deepika Gill, Sajjan Sheoran, Saswata Bhattacharya
Summary: Spin-orbit coupling plays a key role in several intriguing quantum phenomena, including the Rashba-Dresselhaus effect. By studying the lead halide perovskite CsPbF3, researchers have discovered potential applications in spintronics, with tunable Rashba spin splitting and reversible spin textures observed. The findings suggest promising opportunities for perovskite-based spintronic devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Multidisciplinary Sciences
Evan Lafalce, Eric Amerling, Zhi-Gang Yu, Peter C. Sercel, Luisa Whittaker-Brooks, Z. Valy Vardeny
Summary: The authors investigate the inversion symmetry breaking and Rashba effect in hybrid organic-inorganic lead-halide perovskites using two-photon absorption spectroscopy. The results show the presence of Rashba splitting in these materials and the inversion symmetry breaking is induced by ionic impurities. This finding is of great significance for understanding the spintronics and optoelectronics properties of these materials.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jingyi Tian, Giorgio Adamo, Hailong Liu, Maciej Klein, Song Han, Hong Liu, Cesare Soci
Summary: The Rashba effect, which refers to the splitting of electron spin-polarized bands in a crystal, has been utilized in spin-orbitronic devices and optical systems. In optics, it manifests as the splitting of optical states with opposite chirality. Previous realizations relied on passive devices, while this study demonstrates an active device based on the optical Rashba effect.
ADVANCED MATERIALS
(2022)
Article
Physics, Multidisciplinary
Tomonari Mizoguchi, Yoshihito Kuno, Yasuhiro Hatsugai
Summary: The study proposes a method to read out the topological properties of a quantum quadrupole insulator through quench dynamics, introducing a new quantity to determine the topological character. Using an efficient numerical method, the research demonstrates that this new quantity can effectively indicate the topological properties in both noninteracting and interacting cases, and exhibits robustness against disorders.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Takumi Funato, Mamoru Matsuo
Summary: In this study, we have identified a new mechanism for generating spin currents and helicity currents in Rashba systems by dynamically distorting the lattice with surface acoustic waves. These findings provide an alternative functionality of conventional Rashba systems in the field of spintronics.
Article
Multidisciplinary Sciences
J. Y. Liu, J. Yu, J. L. Ning, H. M. Yi, L. Miao, L. J. Min, Y. F. Zhao, W. Ning, K. A. Lopez, Y. L. Zhu, T. Pillsbury, Y. B. Zhang, Y. Wang, J. Hu, H. B. Cao, B. C. Chakoumakos, F. Balakirev, F. Weickert, M. Jaime, Y. Lai, Kun Yang, J. W. Sun, N. Alem, V Gopalan, C. Z. Chang, N. Samarth, C. X. Liu, R. D. McDonald, Z. Q. Mao
Summary: This study reveals the phenomenon of spin-valley locking and stacked quantum Hall effect in BaMnSb2, providing a rare platform for exploring coupled spin and valley physics.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Xu Yang, Xiao-Mei Li, Yang Li, Yan Li, Rui Sun, Jia-Nan Liu, Xuedong Bai, Na Li, Zong-Kai Xie, Lei Su, Zi-Zhao Gong, Xiang-Qun Zhang, Wei He, Zhaohua Cheng
Summary: In a 5.0 nm thick GeTe film, the Ferroelectric Rashba semiconductor's Rashba parameter alpha(R) is found to maintain a large value of 2.12 eV angstrom. The behavior of alpha(R) with thickness can be described by scaling laws, suggesting a 3D thickness limit for the bulk Rashba effect. Additionally, the thickness of the material is shown to affect the Berry curvature, altering the polarization and consequently influencing alpha(R).
Article
Chemistry, Multidisciplinary
Woo Seung Ham, Thi Huynh Ho, Yoichi Shiota, Tatsuya Iino, Fuyuki Ando, Tetsuya Ikebuchi, Yoshinori Kotani, Tetsuya Nakamura, Daisuke Kan, Yuichi Shimakawa, Takahiro Moriyma, Eunji Im, Nyun-Jong Lee, Kyoung-Whan Kim, Soon Cheol Hong, Sonny H. H. Rhim, Teruo Ono, Sanghoon Kim
Summary: Spin current, converted from charge current via spin Hall or Rashba effects, can transfer its angular momentum to local moments in a ferromagnetic layer. A high charge-to-spin conversion efficiency is required for developing future memory or logic devices, and here it is demonstrated in an artificial superlattice without centrosymmetry. The observed field-like torque efficiency in the [Pt/Co/W] superlattice with sub-nm scale thickness is about 0.6 when the W thickness becomes 0.6 nm, which is significantly higher than other metallic heterostructures.
Article
Nanoscience & Nanotechnology
Yu Dong, Ming-Min Yang, Mao Yoshii, Satoshi Matsuoka, Sota Kitamura, Tatsuo Hasegawa, Naoki Ogawa, Takahiro Morimoto, Toshiya Ideue, Yoshihiro Iwasa
Summary: This study reveals the potential of strain engineering in enhancing the bulk photovoltaic effect and demonstrates the polarization-enhanced effect in non-centrosymmetric MoS2 multilayer flakes. The photocurrent significantly increases when an appropriate strain is applied, reaching a level comparable to state-of-the-art materials.
NATURE NANOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Geoffroy Kremer, Julian Maklar, Laurent Nicolai, Christopher W. Nicholson, Changming Yue, Caio Silva, Philipp Werner, J. Hugo Dil, Juraj Krempasky, Gunther Springholz, Ralph Ernstorfer, Jan Minar, Laurenz Rettig, Claude Monney
Summary: α-GeTe(111) is a non-centrosymmetric ferroelectric semiconductor material with a strong spin-orbit interaction and giant Rashba coupling. Its ferroelectric polarization can be controlled by an electric field at room temperature, and research shows that femtosecond light pulses can modulate the Rashba coupling and enhance the lattice distortion on a femtosecond timescale.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Applied
K. Y. Mak, L. L. Tao, Y. Zhou
Summary: In this study, the Rashba effect in 2D ferroelectric LiAlTe2 was explored, revealing a large spin splitting around the bottom of conduction bands driven by spin-orbit coupling. Additionally, the Rashba parameter can be tuned by polarization switching, adding extra functionality to 2D LiAlTe2.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Multidisciplinary
Yao Wang, Zhenzhen Lei, Jinsen Zhang, Xinyong Tao, Chenqiang Hua, Yunhao Lu
Summary: The researchers propose several new phases of tellurium with (anti)ferroelectricity and verify their properties through experiments. This expands the range of elemental ferroelectric materials and sheds new light on their transport phenomena.
CHINESE PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Dibyendu Ghosh, Krishnendu Roy, Soumyajit Maitra, Praveen Kumar
Summary: Among 2D materials, asymmetric Janus structures (MoSSe, WSSe) have exciting properties, and using a magnetic field to control spin manipulation can enhance the efficiency of photo-electrochemical water splitting, while delaminated 2D-MXene (Ti3C2Tx/MoSSe/GaN) can further enhance photocurrent and product formation.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Luis Octavio de Araujo, Fernando P. Sabino, Celso R. C. Rego, Diego Guedes-Sobrinho
Summary: This study quantifies the bulk Rashba splitting and suppression in polymorphs of MA(Pb, Sn, Ge, or Si)I-3 perovskites, showing that SOC and symmetry breaking from metal offcentering octahedral distortion are essential for Rashba splitting. The quasiparticle correction is in outstanding agreement with experimental results, providing energy bandgaps for different perovskite structures.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Michael W. Swift, John L. Lyons, Alexander L. Efros, Peter C. Sercel
Summary: This paper investigates the dispersion of Rashba excitons, their behavior in quasi-2D cylindrical quantum dots, discusses the potential extension of this model to 3D nanocrystals, and establishes criteria for achieving a bright ground exciton state.
Article
Physics, Condensed Matter
Tobias A. de Jong, Johannes Jobst, Hyobin Yoo, Eugene E. Krasovskii, Philip Kim, Sense Jan van der Molen
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2018)
Article
Materials Science, Multidisciplinary
T. A. de Jong, E. E. Krasovskii, C. Ott, R. M. Tromp, S. J. van der Molen, J. Jobst
PHYSICAL REVIEW MATERIALS
(2018)
Article
Physics, Multidisciplinary
D. Geelen, J. Jobst, E. E. Krasovskii, S. J. van der Molen, R. M. Tromp
PHYSICAL REVIEW LETTERS
(2019)
Article
Physics, Multidisciplinary
D. Yu Usachov, I. A. Nechaev, G. Poelchen, M. Guettler, E. E. Krasovskii, S. Schulz, A. Generalov, K. Kliemt, A. Kraiker, C. Krellner, K. Kummer, S. Danzenbaecher, C. Laubschat, A. P. Weber, J. Sanchez-Barriga, E. Chulkov, A. F. Santander-Syro, T. Imai, K. Miyamoto, T. Okuda, D. V. Vyalikh
PHYSICAL REVIEW LETTERS
(2020)
Editorial Material
Physics, Multidisciplinary
E. E. Krasovskii, R. O. Kuzian
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Eugene Krasovskii
Summary: Angle-resolved photoemission from monolayer and bilayer graphene is studied based on an ab initio one-step theory, showing a strong enhancement of emission intensity around scattering resonances. The effect of photoelectron scattering by the underlying substrate on the polarization dependence of the photocurrent is discussed. Experimental observations of the emission intensity are well reproduced within the dipole approximation.
Article
Chemistry, Multidisciplinary
Eugene Krasovskii
Summary: This study investigates the diffraction of photoelectrons emitted from the core 1s and valence band of monolayer and bilayer graphene based on the one-step theory of photoemission. The energy-dependent angular distribution of the photoelectrons is compared to simulated electron reflection patterns of low-energy electron diffraction experiments. The results demonstrate the observable constant energy contours and the well-reproduced experimental shape of photoelectron diffraction, including the scattering resonances and the effect of subsurface layer scattering in bilayer graphene. The study also reveals that photoemission and low-energy electron diffraction patterns provide essentially the same information about the long-range order and can be equally suitable for diffraction analysis.
Article
Materials Science, Multidisciplinary
I. A. Nechaev, E. E. Krasovskii
Summary: This study presents an ab initio relativistic k . p theory on the impact of magnetic exchange fields on the band structure of bulk crystals and thin films of three-dimensional layered topological insulators. It reveals unconventional scenarios and responses to magnetization, depending on the spin and angular momentum of valence and conduction states. By constructing a minimal four-band third-order k . p model, the study analyzes the field-induced band structure and identifies Weyl nodes, showing how different scenarios can affect the topological properties of the modified band structure.
Article
Materials Science, Multidisciplinary
E. E. Krasovskii
Article
Materials Science, Multidisciplinary
I. A. Nechaev, E. E. Krasovskii
Article
Materials Science, Multidisciplinary
R. O. Kuzian, E. E. Krasovskii
Article
Materials Science, Multidisciplinary
I. A. Nechaev, E. E. Krasovskii
Article
Materials Science, Multidisciplinary
J. A. Budagosky, E. E. Krasovskii
Article
Materials Science, Multidisciplinary
Oleg Yu. Vilkov, Eugene E. Krasovskii, Alexander V. Fedorov, Artem G. Rybkin, Alexander M. Shikin, Clemens Laubschat, Jorge Budagosky, Denis V. Vyalikh, Dmitry Yu. Usachov
Article
Materials Science, Multidisciplinary
Susanne Schulz, Ilya A. Nechaev, Monika Guettler, Georg Poelchen, Alexander Generalov, Steffen Danzenbaecher, Alla Chikina, Silvia Seiro, Kristin Kliemt, Alexandra Yu. Vyazovskaya, Timur K. Kim, Pavel Dudin, Evgueni V. Chulkov, Clemens Laubschat, Eugene E. Krasovskii, Christoph Geibel, Cornelius Krellner, Kurt Kummer, Denis V. Vyalikh
NPJ QUANTUM MATERIALS
(2019)
