Article
Chemistry, Multidisciplinary
Wenxiang Wang, Jiyou Jin, Yanrong Wang, Zheng Wei, Yushi Xu, Zhisheng Peng, Hui Liu, Yu Wang, Jiawang You, Julienne Impundu, Qiang Zheng, Yong Jun Li, Lianfeng Sun
Summary: A floating-gate memory based on van der Waals heterostructure is utilized, demonstrating a large storage window ratio (>75.5%), an extremely high on/off ratio (10^7), and an ultrafast electrical writing/erasing speed (40 ns). These enhanced performance characteristics enable excellent multilevel data storage, robust retention, and endurance performance. Stable optical erasing operations can also be achieved by illuminating the device with a laser pulse, showcasing outstanding optoelectronic storage performance (optical erasing speed >2.3 ms). The nonvolatile and high-speed characteristics of these devices hold significant potential for the integration of high-performance nonvolatile memory.
Article
Chemistry, Multidisciplinary
Yushu Wang, Zhesheng Chen, Yan Qu, Mingrui Zhang, Yifeng Ren, Haoying Sun, Yuan Li, Yu Deng, Songlin Li, Yuefeng Nie, Hengyang Xiang, Yaping Wu, Yi Shi, Haibo Zeng, Yufeng Hao
Summary: In a graphene/ZnTe/graphene heterostructure, carriers can be generated in a wide spectrum range and their separation and recombination can be controlled by an electric bias, enabling both photodetection and photoluminescence switching functions.
Article
Nanoscience & Nanotechnology
Yunjeong Hwang, Taehun Kim, Naechul Shin
Summary: The study reveals that the interlayer energy transfer in transition-metal dichalcogenide/graphene vdW heterostructures strongly depends on the interlayer distance, and the h-BN interlayer can modulate exciton energy transfer, affecting the generation of photocurrent.
ACS APPLIED NANO MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Xiangdong Guo, Wei Lyu, Tinghan Chen, Yang Luo, Chenchen Wu, Bei Yang, Zhipei Sun, F. Javier Garcia de Abajo, Xiaoxia Yang, Qing Dai
Summary: 2D monolayers can be vertically stacked in van der Waals heterostructures to support a wide range of confined polaritons. This offers advantages in terms of controlling the constituent layers, stacking sequence, and twist angles. These heterostructures have extended the performance and functions of polaritons, and potential applications include nanophotonic integrated circuits.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Sheraz Ahmad, Khumal Sohail, Letian Chen, Hu Xu, H. U. Din, Zhen Zhou
Summary: Stacking two-dimensional materials through van der Waals forces offers a new approach for high-performance optoelectronic and renewable energy devices. This study investigates vdW heterostructures consisting of GeC, ZnO, and Al2SO monolayers using first-principles computations. The results show that GeC (ZnO)-Al2SO vdWHs are stable type-II semiconductors with indirect (direct) band gaps, which significantly suppress the recombination of charge carriers and make them promising for light detection and harvesting applications. The computational findings pave the way for the design of vdWHs for future optoelectronic and photovoltaic devices.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Nanoscience & Nanotechnology
Hongwu Tang, Fang Luo, Ziru Cui, Yang Xiao, Wei Xu, Zhihong Zhu, Shula Chen, Xiao Wang, Yanping Liu, Jinbin Wang, Gang Peng, Shiqiao Qin, Mengjian Zhu
Summary: Facile control of the wavelength of light emitters is crucial for optoelectronics and photonics applications. In this study, by utilizing the Joule heating effect, the refractive index of silicon-based waveguides can be modulated for reconfigurable nanophotonic circuits. The authors demonstrate electrically controlled wavelength-tunable photoluminescence from vertical van der Waals heterostructures combined by graphene and 2D-TMDCs. The electric control of the PL wavelength and the bandgap reduction of TMDCs are reversible and can be achieved by applying a moderate electric field to the graphene substrate.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Yuchuan Pan, Xiaochi Liu, Junqiang Yang, Won Jong Yoo, Jian Sun
Summary: Two-dimensional transition-metal dichalcogenide (TMDC) based semiconducting van der Waals (vdW) heterostructures have unique and tunable properties, and controlling carrier type and band alignment is crucial for desired performances. In this study, carrier type and band alignment in a vertical MoTe2/MoS2 heterojunction are controlled via thickness engineering and surface charge transfer doping, leading to the realization of multifunctional diodes that are universal and applicable to emerging nanoelectronics based on 2D materials.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Physics, Condensed Matter
Xueping Li, Peize Yuan, Mengjie He, Lin Li, Juan Du, Wenqi Xiong, Congxin Xia, Liangzhi Kou
Summary: This review summarizes the recent theoretical studies on the electronic and optical properties of two-dimensional semiconducting vdWHs. It discusses the characteristics of different band alignments, optoelectronic modulations from external fields, and promising applications in solar cells, tunneling field-effect transistors, and photodetectors. The review also presents further perspectives and possible research problems of vdWHs.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Chemistry, Multidisciplinary
Ruslan M. Meftakhutdinov, Renat T. Sibatov
Summary: This study focuses on novel representative 2D materials of the Janus type family X-M-ZN(2). The stability and properties of these materials, which are hybrids of a transition metal dichalcogenide and a material from the MoSi2N4 family, were investigated. It was concluded that these materials are stable and have favorable mechanical, electronic, and optical characteristics. In addition, possible van der Waals heterostructures with graphene were also explored, demonstrating their potential for shielding external electric fields.
Article
Nanoscience & Nanotechnology
Huihan Li, Xiaolu Xiong, Fei Hui, Dongliang Yang, Jinbao Jiang, Wanxiang Feng, Junfeng Han, Junxi Duan, Zhongrui Wang, Linfeng Sun
Summary: This article summarizes the optimized dry transfer methods for the fabrication of high-quality 2D material heterostructures with optimized interfaces. The dry transfer techniques, featuring clean and sharp interfaces, have been demonstrated to eliminate contamination and other issues encountered in wet transfer processes. These transfer techniques not only contribute to new physical phenomena but also enable novel optoelectronic applications.
Review
Chemistry, Physical
Sk Md Obaidulla, Antonio Supina, Sherif Kamal, Yahya Khan, Marko Kralj
Summary: This review provides an overview of the current understanding and mechanisms of interlayer exciton emission and modulation in two-dimensional transition metal dichalcogenides (2D-TMDs) and organic hybrid heterostructures. It covers various device demonstrations, synthesis techniques, and challenges encountered in TMDO heterostructures. The review also discusses the recent advancements in optoelectronic synaptic devices based on 2D-TMDOs and organic materials.
NANOSCALE HORIZONS
(2023)
Review
Chemistry, Multidisciplinary
Hui-Lei Hou, Cosimo Anichini, Paolo Samori, Alejandro Criado, Maurizio Prato
Summary: In the past 15 years, 2D materials have revolutionized materials science and become powerful components for high-performance chemical sensors. By forming van der Waals heterostructures (VDWHs), the individual drawbacks of 2D materials can be overcome, leading to superior sensitivities, selectivity, and stability. This review discusses the latest developments in chemical sensors based on VDWHs of 2D materials, including sensing mechanisms and future directions with potential impact in environmental sciences and biomedical applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Lixin Liu, Tianyou Zhai
Summary: The article reviews the latest research activities on wafer-scale vdWHs and their applications, outlining preparation strategies and applications to showcase their potential in electronic, optoelectronic, and flexible devices fields.
Review
Chemistry, Multidisciplinary
Xiaomin Xu, Ziru Lou, Simin Cheng, Philip C. Y. Chow, Norbert Koch, Hui-Ming Cheng
Summary: Van der Waals organic/inorganic heterostructures in the 2D limit show extensive structural tunability and have great potential in advancing the development of artificial solids with tailored functionalities. Recent breakthroughs in various types of 2D organic materials have enriched the design possibilities, making them applicable in advanced devices for transistors, optoelectronics, neuromorphic, and other multifunctional applications.
Article
Chemistry, Multidisciplinary
Jenny Hu, Leo Yu, Xueqi Chen, Wanhee Lee, C. Mathew Mate, Tony F. Heinz
Summary: This study investigates the transfer of strain in vertically stacked van-der-Waals heterostructures and finds that high strain transfer efficiency is observed in aligned heterostructures with small twist angles.
Article
Physics, Applied
Nerea Ontoso, C. K. Safeer, Franz Herling, Josep Ingla-Aynes, Haozhe Yang, Zhendong Chi, Beatriz Martin-Garcia, Inigo Robredo, Maia G. Vergniory, Fernando de Juan, M. Reyes Calvo, Luis E. Hueso, Felix Casanova
Summary: This study investigates spin-charge interconversion (SCI) in a graphene-based lateral spin valve combined with low-symmetry MoTe2. The researchers observe three different SCI components, one orthogonal and two nonorthogonal, providing valuable insights into SCI processes in low-symmetry materials. The large SCI signals obtained at room temperature, along with the versatility of the 3D-current configuration, offer feasibility and flexibility for designing the next generation of spin-based devices.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Multidisciplinary
Mattias Matthiesen, Jorrit R. Hortensius, Samuel Manas-Valero, Itzik Kapon, Dumitru Dumcenco, Enrico Giannini, Makars Siskin, Boris A. Ivanov, Herre S. J. van der Zant, Eugenio Coronado, Alexey B. Kuzmenko, Dmytro Afanasiev, Andrea D. Caviglia
Summary: The research focuses on investigating optical methods for generating coherent magnons in antiferromagnetic insulators. It is found that orbital transitions are key targets for magnetic control in insulators with zero orbital angular momentum.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Jan N. Kirchhof, Yuefeng Yu, Denis Yagodkin, Nele Stetzuhn, Daniel B. de Araujo, Kostas Kanellopulos, Samuel Manas-Valero, Eugenio Coronado, Herre van der Zant, Stephanie Reich, Silvan Schmid, Kirill Bolotin
Summary: Nanomechanical spectroscopy (NMS) is a new approach to determine optical absorption spectra of nanoscale materials via mechanical measurements. It directly measures absorption by measuring changes in the resonance frequency of a membrane resonator. In this study, a protocol for NMS of 2D materials is developed, which improves sensitivity and simplifies the experiment. The use of low-stress silicon nitride membranes as the substrate reduces noise-equivalent power.
Article
Chemistry, Multidisciplinary
Francisco Marques-Moros, Carla Boix-Constant, Samuel Manas-Valero, Josep Canet-Ferrer, Eugenio Coronado
Summary: We conducted a comprehensive optical characterization of the van der Waals semiconductor metamagnet CrSBr using temperature- and magnetic-field-dependent photoluminescence. We observed a characteristic peak that disappeared when switching the ferromagnetic layers and exhibited a different temperature dependence from excitonic peaks. This peak's contribution to photoluminescence was enhanced around 30-40 K, coinciding with the hidden order magnetic transition temperature. Our findings reveal the connection between optical and magnetic properties through the ionization of magnetic donor vacancies and demonstrate the potential of designing 2D heterostructures with magnetic and excitonic properties.
Article
Chemistry, Multidisciplinary
Maurits J. A. Houmes, Samuel Manas-Valero, Alvaro Bermejillo-Seco, Eugenio Coronado, Peter G. Steeneken, Herre S. J. van der Zant
Summary: This article investigates the structural anisotropy of CrPS4 and its relationship with magnetic phase transitions and discovers different mechanical response behavior compared to previously studied van der Waals magnets. The results demonstrate the potential of CrPS4 in the field of low-dimensional magnetism and show the potential of mechanical resonators in studying structural modifications in 2D materials and van der Waals heterostructures.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Ramon Torres-Cavanillas, Miguel Gavara-Edo, Eugenio Coronado
Summary: The field of spin-crossover complexes is transitioning from studying the spin transition phenomenon to its application in molecular electronics. Processing spin-crossover materials as nanoparticles is a convenient way to maintain the bistability and reduce size. This paper reviews the recent advances in the chemical design of these nanoparticles and their integration into electronic devices, while also focusing on integrating them with 2D materials to improve device endurance and spin state detection.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yishay Zur, Avia Noah, Carla Boix-Constant, Samuel Manas-Valero, Nofar Fridman, Ricardo Rama-Eiroa, Martin E. Huber, Elton J. G. Santos, Eugenio Coronado, Yonathan Anahory
Summary: This work demonstrates direct magnetic imaging of CrSBr flakes using nano-SQUID-on-tip (SOT) microscopy. It is found that the ferromagnetic order and the antiferromagnetic coupling are preserved down to the monolayer. Additionally, spin reorientation and the formation of Neel magnetic domain walls are observed even in the single-layer limit. This highlights the remarkable stability of CrSBr in the 2D limit.
ADVANCED MATERIALS
(2023)
Article
Physics, Applied
Nerea Ontoso, C. K. Safeer, Josep Ingla-Aynes, Franz Herling, Luis E. Hueso, M. Reyes Calvo, Felix Casanova
Summary: Multi-directional spin-to-charge conversion has been demonstrated in low-symmetry materials and interfaces, where spin polarizations can be converted into a charge current in the same direction regardless of their orientations. In this study, we investigate the spin-to-charge conversion in graphene/MoTe2 heterostructures at low temperatures. We observe unconventional charge conversion for out-of-plane spins and the evolution of non-local voltage signals arising from in-plane spin polarizations.
APPLIED PHYSICS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
D. Khusyainov, T. Gareev, V. Radovskaia, K. Sampathkumar, S. Acharya, M. Siskins, S. Manas-Valero, B. A. Ivanov, E. Coronado, Th. Rasing, A. V. Kimel, D. Afanasiev
Summary: Using a time-resolved magneto-optical pump-probe technique, the ultrafast laser-induced dynamics of mutually correlated spins and lattice in CoPS3 were experimentally studied. It was found that the femtosecond laser pulse acted as an ultrafast heater and melted the antiferromagnetic order. The resonant pumping of the T-4(1g) ? T-4(2g) electronic transition in Co2+ ions effectively changed their orbital momentum and generated a coherent B-g phonon mode.
Article
Nanoscience & Nanotechnology
Talieh S. Ghiasi, Michael Borst, Samer Kurdi, Brecht G. Simon, Iacopo Bertelli, Carla Boix-Constant, Samuel Manas-Valero, Herre S. J. van der Zant, Toeno van der Sar
Summary: Magnetic imaging using NV spins in diamonds is a powerful technique for studying sub-micron scale magnetic order. Placing the NV centers at a nanoscale distance from the target material is a challenge for research on 2D magnets. By using a diamond dry-transfer technique, researchers were able to place a diamond micro-membrane in direct contact with a 2D interlayer antiferromagnet and detect the magnetic stray fields generated by the antiferromagnet.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Mario Palacios-Corella, Victor Garcia-Lopez, Joao Carlos Waerenborgh, Bruno J. C. Vieira, Guillermo Minguez Espallargas, Miguel Clemente-Leon, Eugenio Coronado
Summary: A bifunctionalized polyoxometalate containing a redox active hexavanadate moiety and two tridentate 2,6-bis(pyrazol-1-yl)pyridine ligands was synthesized and characterized. Reaction with Fe(ii) or Zn(ii) ions resulted in the formation of crystalline 1D networks with tunable magnetic and redox properties. The structures exhibited spin-crossover behavior, which could be induced by light irradiation, and reversible solvent exchange. Additionally, the hexavanadate unit could be reduced and reoxidized, leading to changes in the spin state of Fe(ii) and creating a multifunctional material that can be controlled by various stimuli.
Article
Chemistry, Multidisciplinary
Enrique Burzuri, Maria Jose Martinez-Perez, Carlos Marti-Gastaldo, Marco Evangelisti, Samuel Manas-Valero, Eugenio Coronado, Jesus I. Martinez, Jose Ramon Galan-Mascaros, Fernando Luis
Summary: In this article, a novel 2D heterometallic oxalate complex is presented as a potential candidate for quantum spin liquid (QSL) material. It exhibits strong antiferromagnetic correlations and the absence of magnetic ordering, making it an appealing QSL candidate.
Article
Multidisciplinary Sciences
Junhyeon Jo, Yuan Peisen, Haozhe Yang, Samuel Manas-Valero, Jose J. Baldovi, Yao Lu, Eugenio Coronado, Felix Casanova, F. Sebastian Bergeret, Marco Gobbi, Luis E. Hueso
Summary: We demonstrate novel devices based on the unique properties of two-dimensional materials, including infinite magnetoresistance and nonreciprocal charge transport, using NbSe2/CrSBr van der Waals superconducting spin valves. We also show the realization of a superconductive spin valve with multiple stable resistance states by integrating different CrSBr crystals in a lateral heterostructure.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Miguel Gavara-Edo, Francisco Javier Valverde-Munoz, M. Carmen Munoz, Safaa Elidrissi Moubtassim, Francisco Marques-Moros, Javier Herrero-Martin, Kateryna Znovjyak, Maksym Seredyuk, Jose Antonio Real, Eugenio Coronado
Summary: Materials based on spin crossover molecules have attracted significant attention in molecular magnetism. This study presents a novel spin crossover material that can form thermally stable thin films while retaining its molecular bistability.
CHEMISTRY OF MATERIALS
(2023)
