Article
Materials Science, Multidisciplinary
Delong Li, Jianbin Tan, Hengze Qu, Yang Li, Youning Gong, Shengli Zhang, Hu Mao, Qiaoliang Bao, Yupeng Zhang, Guo Ping Wang
Summary: Twisted-angle-induced unusual electrical and optical properties in van der Waals homostructures have attracted significant attention and show potential for optoelectronic applications. In this study, broad-band photoresponse is demonstrated in twisted lead iodide homostructures, overcoming the band-gap limitation of semiconductors. The fabricated photodetectors exhibit ultralow dark current, fast response, and high responsivity from ultraviolet to near-infrared range. This work presents a simple strategy for realizing broadband photodetectors and highlights the potential of twisted two-dimensional structures for next-generation optoelectronic applications.
Article
Multidisciplinary Sciences
Igor A. Golovchanskiy, Nikolay N. Abramov, Vasily S. Stolyarov, Martin Weides, Valery V. Ryazanov, Alexander A. Golubov, Alexey Ustinov, Mikhail Yu Kupriyanov
Summary: Combining superconducting, insulating, and ferromagnetic layers can realize on-chip hybrid magnonic systems with unprecedentedly strong coupling parameters, breaking the restriction of weak coupling strength between elemental particles and offering new opportunities in microwave superconducting spintronics for quantum technologies.
Article
Optics
John McCarthy, Diarmuid Osullivan, Maryam Shayesteh, Mohamad Dernaika, Frank H. Peters, Bryan Kelleher
Summary: A tunable comb source is created by gain switching a three-sectioned photonic integrated circuit. The circuit consists of two mutually coupled lasers connected by a passive waveguide. Frequency combs are generated by gain switching the Fabry-Perot laser, resulting in line spacings ranging from 3.5 to 8 GHz. Despite the lack of on-chip optical isolation, the combs remain stable due to the short delay times inherent to on-chip integration, as revealed by numerical simulations using a delay-differential model.
Article
Physics, Multidisciplinary
Chun-Xiao Liu, Guanzhong Wang, Tom Dvir, Michael Wimmer
Summary: Semiconductor quantum dots have emerged as a promising platform for solid-state quantum simulation. However, the implementation of superconducting coupling between quantum dots mediated by Cooper pairs has been limited by tunability and suppression issues. In this study, the authors propose a method to achieve tunable effective couplings between quantum dots using Andreev bound states in a semiconductor-superconductor nanowire. They demonstrate that the properties of the Andreev bound states can be easily controlled to individually manipulate the coupling mediated by Cooper pairs and single electrons, while mitigating the problem of coupling suppression. The authors also suggest an experimental approach to extract the coupling strengths from resonant current in a three-terminal junction. This proposal opens up new possibilities for future experiments in the field.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Applied
Martin Nurizzo, Baptiste Jadot, Pierre-Andre Mortemousque, Vivien Thiney, Emmanuel Chanrion, Matthieu Dartiailh, Arne Ludwig, Andreas D. Wieck, Christopher Bauerle, Matias Urdampilleta, Tristan Meunier
Summary: Recent demonstrations using electron spins stored in quantum dot array as qubits show promise for developing a scalable quantum computing platform. By partitioning the system with inter-dot tunnel barriers, the precise control of the quantum dot parameters can be simplified and protection against unwanted charge displacement can be achieved.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Simon Woska, Pascal Rietz, Osman Karayel, Heinz Kalt
Summary: Photonic molecules with tunable coupling strength are demonstrated on a liquid crystal elastomer substrate, allowing for various applications and highly controllable intensity transfer. The tunability of the coupling strength is evident from observed mode splittings in single-fiber transmission spectra and is consistent with coupled-mode theory. Additionally, the photonic molecules can be utilized as add-drop filters with a highly controllable intensity transfer.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Nanoscience & Nanotechnology
Adina Ripin, Ruoming Peng, Xiaowei Zhang, Srivatsa Chakravarthi, Minhao He, Xiaodong Xu, Kai-Mei Fu, Ting Cao, Mo Li
Summary: Quantum emitters with strong and tunable coupling to breathing-mode phonons are observed in bilayer WSe2. The emission of each single photon heralds the creation of a phonon Fock state in the atomic-scale excitonic-optomechanical system. Engineering the coupling between fundamental quantum excitations is at the heart of quantum science and technologies.
NATURE NANOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
S. Chakrabortty, Ram Kumar, N. Mohapatra
Summary: We investigated the superconducting properties of the compound LaRu3Si2 on a kagome-honeycomb lattice by doping with heavier elements Rh and Ir. The doping resulted in a gradual suppression of superconducting transition temperature, although the observed superconductivity remained moderately coupled. The upper critical field showed a nonmonotonous variation with doping concentration, and the superconducting gap parameter was enhanced with doping concentration. We also observed a nonzero residual electronic specific heat coefficient for all compositions, indicating multiband superconductivity.
Article
Chemistry, Multidisciplinary
Jingang Li, Kan Yao, Yun Huang, Jie Fang, Pavana Siddhartha Kollipara, Donglei Emma Fan, Yuebing Zheng
Summary: In this work, chemically synthesized transition metal dichalcogenide (TMDC) nanowires are used as dielectric nanoresonators to support both excitonic and Mie resonances. Strong light-matter couplings and tunable exciton polaritons are demonstrated in individual nanowires. The TMDC nanoresonators, with highly tunable optical properties, have potential applications in tunable optical nanodevices.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Lang Pei, Zhenggang Luo, Xusheng Wang, Zhanfeng Ma, Yuhang Nie, Jiasong Zhong, Ding Yang, Sateesh Bandaru, Bao-Lian Su
Summary: In this study, a novel S-scheme heterojunction photocatalyst was synthesized for efficient CO2-to-syngas conversion. The photocatalyst showed remarkable activity and selectivity in the conversion of CO2 to syngas, even without the use of sacrifice reagents or additional cocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Hongchao Xie, Shengwei Jiang, Daniel A. Rhodes, James C. Hone, Jie Shan, Kin Fai Mak
Summary: The research reported the observation of exciton-optomechanical coupling in a suspended monolayer MoSe2 mechanical resonator, showing optical damping and antidamping of mechanical vibrations, as well as the optical spring effect. The exciton-optomechanical coupling strength is gate-tunable and may have applications in nanoelectromechanical systems (NEMS) and exciton-optomechanics.
Article
Nanoscience & Nanotechnology
Jinzhen Huang, Huangzhong Yu
Summary: The addition of small-molecule biomaterial GHK-Cu in binary PBDB-T:ITIC system increases ITIC crystallinity and promotes the formation of continuous single-phase domains of PBDB-T and ITIC, optimizing charge transmission in PSCs. GHK-Cu also enhances energy transfer efficiency and enhances the absorption spectrum, leading to improved PCE in ternary devices. The incorporation of GHK-Cu significantly boosts the PCE of both PBDB-T:ITIC and PM6:Y6 based PSCs.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Multidisciplinary
H. Bai, Y. C. Zhang, Y. J. Zhou, P. Chen, C. H. Wan, L. Han, W. X. Zhu, S. X. Liang, Y. C. Su, X. F. Han, F. Pan, C. Song
Summary: The nonrelativistic altermagnetic spin splitting effect (ASSE) in antiferromagnet RuO2 can generate controllable spin polarized time-reversal-odd spin current. In this study, we demonstrate the spin-to-charge conversion in RuO2 through spin Seebeck effect measurements. The spin Seebeck voltage can be detected even when the injected spin current is polarized along different directions, indicating the successful conversion of x- and z- spin polarizations into charge current.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Physical
Xiaomin Xu, Zhipeng Sun, Xiaohu Wang, Zhirui Gao, Lixiu Guan, Shuo Zhang, Pu Chang, Junguang Tao
Summary: By utilizing PtBr3/WSe2 van der Waals heterostructures, the PtBr3 monolayer demonstrates high ferromagnetic order and can achieve a high Curie temperature, showing promise for significant impact in spintronic devices.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Siyun Qi, Jian Liu, Yangyang Li, Mingwen Zhao
Summary: Researchers have identified the potential of layered metal diboride materials in achieving orientation-dependent conduction polarity through first-principles calculations, with the anisotropic Seebeck coefficients of these materials being efficiently enhanced by applying tensile strain.
Article
Chemistry, Physical
Karthik Ramasamy, Ram K. Gupta, Hunter Sims, Soubantika Palchoudhury, Sergei Ivanov, Arunava Gupta
JOURNAL OF MATERIALS CHEMISTRY A
(2015)
Article
Materials Science, Multidisciplinary
Karthik Ramasamy, Hunter Sims, Sahar Keshavarz, Nariman Naghibolashrafi, Arunava Gupta
JOURNAL OF MATERIALS CHEMISTRY C
(2016)
Review
Physics, Multidisciplinary
M. Baumgaertel, K. Ghanem, A. Kiani, E. Koch, E. Pavarini, H. Sims, G. Zhang
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2017)
Article
Chemistry, Multidisciplinary
Bethany M. Hudak, Jiaming Song, Hunter Sims, M. Claudia Troparevsky, Travis S. Humble, Sokrates T. Pantelides, Paul C. Snijders, Andrew R. Lupini
Article
Physics, Applied
B. S. Holinsworth, D. Mazumdar, H. Sims, Q. -C. Sun, M. K. Yurtisigi, S. K. Sarker, A. Gupta, W. H. Butler, J. L. Musfeldt
APPLIED PHYSICS LETTERS
(2013)
Article
Physics, Applied
H. Sims, K. Ramasamy, W. H. Butler, A. Gupta
APPLIED PHYSICS LETTERS
(2013)
Article
Chemistry, Physical
Karthik Ramasamy, Hunter Sims, Ram K. Gupta, Dhananjay Kumar, William H. Butler, Arunava Gupta
CHEMISTRY OF MATERIALS
(2013)
Article
Chemistry, Physical
Karthik Ramasamy, Hunter Sims, William H. Butler, Arunava Gupta
CHEMISTRY OF MATERIALS
(2014)
Article
Chemistry, Multidisciplinary
Karthik Ramasamy, Hunter Sims, William H. Butler, Arunava Gupta
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2014)
Article
Materials Science, Multidisciplinary
H. Sims, W. H. Butler, M. Richter, K. Koepernik, E. Sasioglu, C. Friedrich, S. Bluegel
Article
Materials Science, Multidisciplinary
H. Sims, E. R. Ylvisaker, E. Sasioglu, C. Friedrich, S. Bluegel, W. E. Pickett
Article
Multidisciplinary Sciences
Chee-Tat Toh, Hongji Zhang, Junhao Lin, Alexander S. Mayorov, Yun-Peng Wang, Carlo M. Orofeo, Darim Badur Ferry, Henrik Andersen, Nurbek Kakenov, Zenglong Guo, Irfan Haider Abidi, Hunter Sims, Kazu Suenaga, Sokrates T. Pantelides, Barbaros Ozyilmaz
Article
Materials Science, Multidisciplinary
Hunter Sims, Donovan N. Leonard, Axiel Yael Birenbaum, Zhuozhi Ge, Tom Berlijn, Lian Li, Valentino R. Cooper, Matthew F. Chisholm, Sokrates T. Pantelides
Article
Materials Science, Multidisciplinary
B. S. Holinsworth, H. Sims, J. G. Cherian, D. Mazumdar, N. C. Harms, B. C. L. Chapman, A. Gupta, S. A. McGill, J. L. Musfeldt
Article
Materials Science, Multidisciplinary
Hunter Sims, Eva Pavarini, Erik Koch