Article
Multidisciplinary Sciences
Guoqing Wang, Changhao Li, Hao Tang, Boning Li, Francesca Madonini, Faisal F. Alsallom, Won Kyu Calvin Sun, Pai Peng, Federica Villa, Ju Li, Paola Cappellaro
Summary: Solid-state defects are attractive platforms for quantum sensing and simulation, but changes in density usually result in changes in spin. This study successfully controls the spin concentration while keeping fixed decoherence effects by exploiting charge transport, and characterizes the charge redistribution process using a wide-field imaging system.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Mateusz T. Madzik, Arne Laucht, Fay E. Hudson, Alexander M. Jakob, Brett C. Johnson, David N. Jamieson, Kohei M. Itoh, Andrew S. Dzurak, Andrea Morello
Summary: Researchers demonstrate conditional, coherent control of electron spin qubits in exchange-coupled pairs of P-31 donors implanted in silicon, achieving a local two-qubit controlled-rotation gate with high precision through spectroscopic measurement of the coupling strength.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
Pavlo Omelchenko, Eric Arturo Montoya, Erol Girt, Bret Heinrich
Summary: The study explores asymmetric transport of pure-spin currents across an interface of dissimilar nonmagnetic materials Au/Pt. Experimental results demonstrate that transmission of pure-spin current from Au into Pt is twice as efficient as from Pt into Au. The findings are interpreted by extending conventional spin-pumping, spin-diffusion theory to include boundary conditions of reflected and transmitted spin current at the Au/Pt interface that are proportional to the established spin chemical potentials on either side of the interface.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Yutaka Itoh
Summary: In this study, the Cu-63 and (65)Cu nuclear spin-lattice relaxation rate measurements of cuprous oxide Cu2O were reported using zero field Cu nuclear quadrupole resonance. From the isotopic measurements, the finite magnetic relaxation rate W-63(M) and a predominant nuclear quadrupole relaxation rate W-63(Q) were successfully estimated, and their temperature dependence was investigated.
Article
Chemistry, Analytical
Lu Wang, Zejing Guo, Qing Lan, Wenqing Song, Zhipeng Zhong, Kunlin Yang, Tuoyu Zhao, Hai Huang, Cheng Zhang, Wu Shi
Summary: In this study, a controllable carrier doping effect was achieved in graphene and MoS2 FETs through electron-beam doping, enhancing carrier modulation capabilities in 2D materials and showing great potential for development.
Article
Multidisciplinary Sciences
K. L. Hudson, A. Srinivasan, O. Goulko, J. Adam, Q. Wang, L. A. Yeoh, O. Klochan, I Farrer, D. A. Ritchie, A. Ludwig, A. D. Wieck, J. von Delft, A. R. Hamilton
Summary: This study investigates a series of low disorder p-type GaAs quantum point contacts, exploring a new signature for detecting spin gaps that is insensitive to disorder. By examining the linear and non-linear response to the orientation of the applied magnetic field, the authors successfully extract a spin-orbit gap of approximately 500 microelectron volts.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Xihan Chen, Haipeng Lu, Kang Wang, Yaxin Zhai, Vladimir Lunin, Peter C. Sercel, Matthew C. Beard
Summary: Metal-halide perovskite semiconductors show potential for opto-spintronic applications by manipulating charge and spin degrees of freedom to reduce power consumption and achieve faster switching times. Tuning excitation density and exciton binding energy can lead to long spin lifetimes in these systems, with different mechanisms dominating at low and high excitation densities.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Manish Kumar Mohanta, Abir De Sarkar
Summary: A graphene-based van der Waals heterostructure, including a HfN2 monolayer stacked over graphene, has been studied using density functional theory. The heterostructure shows the potential for high tunability in electrical contacts and doping carrier concentration under external perturbation such as strain and electric field control.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Prashurya Pritam Mudoi, Anup Choudhury, Yanling Li, Rodrigue Lescouezec, Rajendiran Marimuthu, Nayanmoni Gogoi
Summary: The self-assembly of a cyanido-bridged square-shaped {Fe2Co2} tetranuclear complex was achieved, and the potential for inducing an intramolecular electron transfer coupled spin transition in the complex through protonation was explored. Measurements and studies confirmed that a reversible intramolecular electron transfer coupled spin transition can be triggered in the complex upon addition of acid or base.
INORGANIC CHEMISTRY
(2021)
Article
Polymer Science
Ivan Poljak, Pasko Zupanovic, Frano Barbir
Summary: In Nafion processes, it has been shown that valence electrons instead of protons are the charge carriers in ex situ processes, with valence electron concentration decreasing with water uptake. Additionally, the concentration of valence electrons in ex situ measurements is four orders of magnitude higher than proton concentration in in situ measurements.
Article
Chemistry, Multidisciplinary
Yonatan Dubi
Summary: In this study, a theoretical model for the CISS effect in bio-molecular junctions is proposed, which explains the origin of the CISS effect and allows for quantitative analysis of experimental data. This is of great significance for a deeper understanding in the field of molecular electronics and nano-scale transport.
Article
Physics, Multidisciplinary
Ke Zhang, Shixuan Zhao, Zhanyang Hao, Shiv Kumar, Eike F. Schwier, Yingjie Zhang, Hongyi Sun, Yuan Wang, Yujie Hao, Xiaoming Ma, Cai Liu, Le Wang, Xiaoxiao Wang, Koji Miyamoto, Taichi Okuda, Chang Liu, Jiawei Mei, Kenya Shimada, Chaoyu Chen, Qihang Liu
Summary: Research has discovered distinct spin-momentum-layer locking phenomena in centrosymmetric crystals, with spin highly polarized along the Brillouin zone boundary and almost vanishing near the zone center. This sheds new light on the design metrics for future spintronic materials.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
S. Kollarics, F. Simon, A. Bojtor, K. Koltai, G. Klujber, M. Szieberth, B. G. Markus, D. Beke, K. Kamaras, A. Gali, D. Amirari, R. Berry, S. Boucher, D. Gavryushkin, G. Jeschke, J. P. Cleveland, S. Takahashi, P. Szirmai, L. Forro, E. Emmanouilidou, R. Singh, K. Holczer
Summary: High concentration of negatively charged nitrogen-vacancy (NV-) centers was successfully created in diamond single crystals containing approximately 100 ppm nitrogen using electron and neutron irradiation and subsequent thermal annealing. The formation process and properties of NV- centers were observed, with about 25% of vacancies forming NVs during the annealing process, and high precision measurement of hyperfine and quadrupole coupling constants was achieved using EPR techniques.
Article
Chemistry, Multidisciplinary
Shaobo Cheng, Xing Li, Changsong Xu, Yu Liu, Marco Beleggia, Lijun Wu, Wenbin Wang, Cedomir Petrovic, Laurent Bellaiche, Jing Tao, Yimei Zhu
Summary: The LuFe2O4 compound displays strong charge-spin coupling, with two different charge orderings exhibiting distinct magnetic properties. This study highlights the coexistence and competitive nature of orderings in quantum materials.
Article
Chemistry, Physical
Neeraj Bangruwa, Mayra Suryansh, Mayra Peralta, Rafael Gutierrez, Gianaurelio Cuniberti, Debabrata Mishra
Summary: In this study, we investigate the sequence-dependent chiral-induced spin selectivity (CISS) in double-stranded DNA. By using time-correlated single-photon counting and electrochemical impedance spectroscopy, we find that the average lifetime of photo-excited electrons is influenced by the CISS effect generated by the DNA molecule. The observed experimental trends are supported by simulations using a tight binding method.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Physics, Applied
Shinya Kawamura, Ayato Wakamatsu, Shin-ichi Kuroda, Taishi Takenobu, Hisaaki Tanaka
JAPANESE JOURNAL OF APPLIED PHYSICS
(2018)
Article
Chemistry, Multidisciplinary
Mohammad Rasel Mian, Hiroaki Iguchi, Shinya Takaishi, Hideaki Murasugi, Tatsuya Miyamoto, Hiroshi Okamoto, Hisaaki Tanaka, Shin-ichi Kuroda, Brian K. Breedlove, Masahiro Yamashita
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2017)
Article
Multidisciplinary Sciences
Hisaaki Tanaka, Kaito Kanahashi, Naoya Takekoshi, Hiroaki Mada, Hiroshi Ito, Yukihiro Shimoi, Hiromichi Ohta, Taishi Takenobu
Article
Chemistry, Multidisciplinary
Hisaaki Tanaka, Shinya Kawamura, Prashant Sonar, Yukihiro Shimoi, Thu Trang Do, Taishi Takenobu
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Physics, Applied
Shin-ichi Kuroda, Hisaaki Tanaka, Yukihiro Shimoi, Kazuo Takimiya
APPLIED PHYSICS EXPRESS
(2020)
Article
Nanoscience & Nanotechnology
Qian Liu, Kaito Kanahashi, Keiichiro Matsuki, Sergei Manzhos, Krishna Feron, Steven E. Bottle, Kazuhiro Tanaka, Tomonori Nanseki, Taishi Takenobu, Hisaaki Tanaka, Prashant Sonar
ADVANCED ELECTRONIC MATERIALS
(2020)
Article
Physics, Multidisciplinary
Hiroshi Ito, Hiroaki Mada, Katsuya Watanabe, Hisaaki Tanaka, Taishi Takenobu
Summary: The study clarifies the roles of crystalline domains and boundaries in doped semicrystalline polymer films, revealing variations of weak localization and variable range hopping with doping levels.
COMMUNICATIONS PHYSICS
(2021)
Correction
Chemistry, Multidisciplinary
Hisaaki Tanaka, Shinya Kawamura, Prashant Sonar, Yukihiro Shimoi, Thu Trang Do, Taishi Takenobu
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Physics, Applied
Shun-ichiro Ito, Kaito Kanahashi, Hiromichi Ohta, Hiroshi Ito, Taishi Takenobu, Hisaaki Tanaka
Summary: The intermolecular interaction between a conducting polymer and a dopant molecule plays a crucial role in determining the structure and electronic properties of doped films. By comparing two typical electrochemically doped polythiophenes with different side chain densities, it was found that side chain engineering is essential to optimize the electronic properties of the doped state. Additionally, thermoelectromotive force measurements suggest the weakly bound state of dopant molecules in doped PQT films.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Masanori Wakizaka, Mohammad Rasel Mian, Takefumi Yoshida, Tetsu Sato, Hisaaki Tanaka, Tatsuya Miyamoto, Hiroshi Okamoto, Shinya Takaishi, Hiroaki Iguchi, Masahiro Yamashita
Summary: In this study, a new Ni-based MX-Chain compound with hydroxy groups was synthesized and exhibited an intermediate state between the MH and CDW states. The compound also showed semiconductive characteristics along the chain direction.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Mohammad Rasel Mian, Masanori Wakizaka, Takefumi Yoshida, Hiroaki Iguchi, Shinya Takaishi, Unjila Afrin, Tatsuya Miyamoto, Hiroshi Okamoto, Hisaaki Tanaka, Shin-ichi Kuroda, Brian K. Breedlove, Masahiro Yamashita
Summary: The study synthesized a quasi-one-dimensional Pd(III)-Cl complex with multiple hydrogen bonds, where the Pd ions are in a Pd(III) average valence state, exhibiting high thermal stability and electrical conductivity.
DALTON TRANSACTIONS
(2021)
Article
Physics, Multidisciplinary
Kaito Kanahashi, Yong-Young Noh, Won-Tae Park, Hoichang Yang, Hiromichi Ohta, Hisaaki Tanaka, Taishi Takenobu
PHYSICAL REVIEW RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Mohammad Raset Mian, Unjila Afrin, Hiroaki Iguchi, Shinya Takaishi, Takefumi Yoshida, Tatsuya Miyamoto, Hiroshi Okamoto, Hisaaki Tanaka, Shin-ichi Kuroda, Masahiro Yamashita
Article
Physics, Multidisciplinary
Hisaaki Tanaka, Ayato Wakamatsu, Masahiro Kondo, Shinya Kawamura, Shin-ichi Kuroda, Yukihiro Shimoi, Won-Tae Park, Yong-Young Noh, Taishi Takenobu
COMMUNICATIONS PHYSICS
(2019)
Article
Chemistry, Multidisciplinary
Tomo Sakanoue, Jinpeng Li, Hisaaki Tanaka, Ryota Ito, Shimpei Ono, Shin-ichi Kuroda, Taishi Takenobu
ADVANCED MATERIALS
(2017)