Article
Multidisciplinary Sciences
Haoxin Zhou, Ludwig Holleis, Yu Saito, Liam Cohen, William Huynh, Caitlin L. Patterson, Fangyuan Yang, Takashi Taniguchi, Kenji Watanabe, Andrea F. Young
Summary: Spin-polarized superconductivity is observed in Bernal bilayer graphene under a large applied perpendicular electric field. Electrostatic gate tuning leads to transitions between electronic phases with different polarizations in the spin space. A transition to a superconducting state is observed at a finite magnetic field, and the critical temperature is consistent with a spin-triplet order parameter.
Article
Multidisciplinary Sciences
Jiaqi Cai, Dmitry Ovchinnikov, Zaiyao Fei, Minhao He, Tiancheng Song, Zhong Lin, Chong Wang, David Cobden, Jiun-Haw Chu, Yong-Tao Cui, Cui-Zu Chang, Di Xiao, Jiaqiang Yan, Xiaodong Xu
Summary: The authors realize a canted-antiferromagnetic Chern insulator in atomically-thin MnBi2Te4 with electrical control of chiral-edge state transport.
NATURE COMMUNICATIONS
(2022)
Article
Physics, Multidisciplinary
Hailong Fu, Ke Huang, Kenji Watanabe, Takashi Taniguchi, Jun Zhu
Summary: In this work, a new experimental method was demonstrated to successfully detect gapless, linearly dispersed spin wave excitations in bilayer graphene, providing direct evidence for a predicted antiferromagnetic order. The spin wave mode propagates at a high velocity and maintains phase coherence over a significant distance, consistent with hydrodynamic theory. These findings lay the groundwork for exploring spin superfluidity and potentially engineering magnonic devices in high-quality materials.
Article
Astronomy & Astrophysics
Hao Liu, Yuan-He Zou, Yan-Rui Liu, Shao-Zhou Jiang
Summary: The relativistic chiral Lagrangians for doubly charmed baryons of spin-1/2 and spin-3/2 are constructed up to the order O(p(4)). There are a total of 19, 74, and 452 independent terms in the two-flavor case and 25, 112, and 864 independent terms in the three-flavor case from O(p(2)) to O(p(4)). The chiral Lagrangians in the heavy diquark limit are also obtained.
Article
Quantum Science & Technology
Tingting Zhai, Matteo Mazzola, Demetrio Macias, Rafael Salas-Montiel
Summary: Integrated single photon sources are crucial for quantum computing, simulation, communication, and photonic neural networks. Recently, researchers have developed topology-optimized couplers to enhance the coupling of orthogonal dipoles, improving the coupling efficiency and electromagnetic local density of states (LDOS).
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Multidisciplinary Sciences
Shubhankar Das, A. Ross, X. X. Ma, S. Becker, C. Schmitt, F. van Duijn, E. F. Galindez-Ruales, F. Fuhrmann, M-A Syskaki, U. Ebels, V Baltz, A-L Barra, H. Y. Chen, G. Jakob, S. X. Cao, J. Sinova, O. Gomonay, R. Lebrun, M. Klaui
Summary: The research shows that there is a mechanism for long-distance spin transport in the antiferromagnetic orthoferrite YFeO3, with a magnon decay length exceeding hundreds of nanometers and low magnetic damping. The strong anisotropy in magnon decay lengths is attributed to the role of magnon group velocity in the transport of spin-waves.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Alberto Anadon, Adrian Gudin, Ruben Guerrero, Iciar Arnay, Alejandra Guedeja-Marron, Pilar Jimenez-Cavero, Jose Manuel Diez Toledano, Fernando Ajejas, Maria Varela, Sebastien Petit-Watelot, Irene Lucas, Luis Morellon, Pedro Antonio Algarabel, Manuel Ricardo Ibarra, Rodolfo Miranda, Julio Camarero, Juan Carlos Rojas-Sanchez, Paolo Perna
Summary: The study shows that a graphene monolayer between Co and a heavy metal (HM) can effectively preserve the spin current injected into the HM from the bottom Co layer, as revealed by thermo-spin measurements. The presence of the graphene monolayer leads to a reduction in the sum of spin Seebeck and interfacial contributions, independent of the spin Hall angle sign of the HM used.
Article
Physics, Multidisciplinary
Ankur Das, Ribhu K. Kaul, Ganpathy Murthy
Summary: Motivated by experiments on graphene in the quantum Hall regime, this study revisits the phase diagram of a single sheet of graphene at charge neutrality and presents the finding of a coexistence region of magnetic and bond orders. This result provides a possible explanation for experimental observations on the quantum Hall effect in graphene.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Thomas Bernat, Julia S. Meyer, Manuel Houzet
Summary: The spin susceptibility is a crucial parameter for characterizing the symmetry of the order parameter in unconventional superconductors. Nonunitary triplet superconductors have gained significant attention in the search for topological superconductivity. In this study, we derive a general formula for the spin susceptibility of nonunitary triplet superconductors within a single-band model of nonmagnetic, centrosymmetric materials with strong spin-orbit coupling. We utilize this formula to critically evaluate experimental claims of nonunitary triplet superconductivity in certain materials.
Article
Chemistry, Multidisciplinary
Pengwei Dou, Jingyan Zhang, Yaqin Guo, Tao Zhu, Jia Luo, Guoping Zhao, He Huang, Guoqiang Yu, Yunchi Zhao, Jie Qi, Xiao Deng, Yuanbo Wang, Jialiang Li, Jianxin Shen, Xinqi Zheng, Yanfei Wu, Hongxin Yang, Baogen Shen, Shouguo Wang
Summary: This study reports on all electric-controlled magnetization switching in antiferromagnetic Co/Ir/Co trilayers with vertical magnetic imbalance. The switching polarity can be reversed by optimizing the Ir thickness. The polarized neutron reflection measurements reveal a canted noncollinear spin configuration in Co/Ir/Co trilayers, resulting from magnetic inhomogeneity. Micromagnetic simulations demonstrate asymmetric domain walls, caused by introduced imbalance magnetism, leading to deterministic magnetization switching in Co/Ir/Co trilayers.
Article
Physics, Multidisciplinary
Jonathan B. Curtis, Nicholas R. Poniatowski, Yonglong Xie, Amir Yacoby, Eugene Demler, Prineha Narang
Summary: A recent experiment demonstrated that proximity-induced Ising spin-orbit coupling can enhance spin-triplet superconductivity in Bernal bilayer graphene. However, the fluctuations of the spin orientation of the triplet order parameter in graphene suppress the superconducting transition to nearly zero temperature due to its perfect spin rotation symmetry. Both Ising spin-orbit coupling and an in-plane magnetic field can eliminate these fluctuations, significantly increasing the transition temperature, as supported by our analysis and consistent with the experiment. Our model also suggests the existence of a phase with quasilong-range ordered spin-singlet charge 4e superconductivity at low anisotropy and magnetic field, while the triplet 2e superconducting order only exhibits short-ranged correlations. Relevant experimental signatures are discussed.
PHYSICAL REVIEW LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Rongrong Xie, Panfeng Cao, Zheyuan Xu, Boyi Xu, Jinyue Fu, Xiaoli Zhu, Xianwei Fu, Sheng-Yi Xie, Ying Jiang, Anlian Pan
Summary: This study reports a significant out-of-plane spin polarization in the two-dimensional Dion-Jacobson (DJ) perovskite, which is the physical origin of the large Rashba spin splitting observed. The generation of this unconventional spin component indicates the significant influence of the in-plane asymmetric crystal field on the spin-orbit interactions. These results suggest that the studied system may serve as a type of spin source material to explore the attractive out-of-plane spin polarization.
Article
Engineering, Electrical & Electronic
Subrata Karmakar, Deepak S. Gavali, Chetan D. Mistari, Ranjit Thapa, M. A. More, Dhrubananda Behera, Ariful Haque
Summary: Orthorhombic nanostructured NdNiO3 was prepared using the sol-gel auto-combustion method. The study found that NdNiO3 undergoes a magnetic phase transition near 176K and a metal to insulator phase transition around 178K. The material also exhibits low turn-on field and high field emission current density, making it a promising field emitter. Additionally, the current-voltage characteristics of NdNiO3/p-Si heterostructures were explored.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Dmitry Yu Aleshin, Rosa Diego, Leoni A. Barrios, Yulia Nelyubina, Guillem Aromi, Valentin V. Novikov
Summary: The study successfully observed the dynamics of two rare spin states, opening up new possibilities for information storage and processing.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Physics, Multidisciplinary
I Boventer, H. T. Simensen, A. Anane, M. Klaui, A. Brataas, R. Lebrun
Summary: The study demonstrates that spin pumping signals induced by the resonance of canted antiferromagnets with Dzyaloshinskii-Moriya interaction can generate easily observable inverse spin-Hall voltages. Using a bilayer of hematite/heavy metal as a model system, the research shows that antiferromagnetic resonance and associated inverse spin-Hall voltages can be measured at room temperature. Direct information about the mode handedness can be obtained by comparing different materials.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Applied
Yasemin O. Ciftci, Subhendra D. Mahanti
JOURNAL OF APPLIED PHYSICS
(2016)
Article
Physics, Multidisciplinary
M. Zhu, J. Peng, T. Zou, K. Prokes, S. D. Mahanti, T. Hong, Z. Q. Mao, G. Q. Liu, X. Ke
PHYSICAL REVIEW LETTERS
(2016)
Article
Physics, Applied
Nagendra S. Chauhan, Bhasker Gahtori, Bathula Sivaiah, Subhendra D. Mahanti, Ajay Dhar, Amrita Bhattacharya
APPLIED PHYSICS LETTERS
(2018)
Article
Physics, Condensed Matter
Kingshuk Majumdar, Subhendra D. Mahanti
JOURNAL OF PHYSICS-CONDENSED MATTER
(2018)
Article
Materials Science, Multidisciplinary
Kingshuk Majumdar, Subhendra D. Mahanti
MATERIALS RESEARCH EXPRESS
(2019)
Article
Nanoscience & Nanotechnology
Nagendra S. Chauhan, Sivaiah Bathula, Bhasker Gahtori, Subhendra D. Mahanti, Amrita Bhattacharya, Avinash Vishwakarma, Ruchi Bhardwaj, Vidya Nand Singh, Ajay Dhar
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Materials Science, Multidisciplinary
Aisha Khatun, Payel Aich, Alexander Schoekel, Soumyakanta Panda, N. Mohapatra, Ashis Kumar Nandy, Subhendra D. Mahanti, D. Topwal
Summary: The effect of A-site cationic ordering on the structural, transport, and magnetic properties of NdBaMn2O6 perovskite manganite was investigated. Samples with different degrees of A-site ordering were synthesized and studied. X-ray diffraction data revealed that the crystallographic phase transitions depended on the degree of ordering of the A-site cations. The electrical resistivity, magnetic properties, and magnetoresistance were also found to be influenced by the degree of ordering. The disordered system showed enhanced ferromagnetic correlations and a larger magnetoresistance at low temperature compared to the ordered counterpart.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Physics, Condensed Matter
Michael Gottschalk, Mal-Soon Lee, Eric Goodwin, Camille Mikolas, Thomas Chasapis, Duck Young Chung, Mercouri G. Kanatzidis, Subhendra D. Mahanti, Stuart Tessmer
Summary: Using scanning tunneling spectroscopy, the effects of nitrogen gas exposure on the electronic density of states of Bi2Se3 were investigated. Nitrogen gas molecules were observed to physisorb near Se vacancies, resulting in a saturation of the exposure effect after approximately 50 min. Density functional theory calculations and molecular dynamics simulations support the dissociative adsorption of N2 molecules and their strong binding to Se vacancies, which modifies the position of the Fermi energy relative to the Dirac point.
SOLID STATE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Pronoy Nandi, Chandan Giri, Diptikanta Swain, U. Manju, Subhendra D. Mahanti, Dinesh Topwal
ACS APPLIED ENERGY MATERIALS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
Dat T. Do, Subhendra D. Mahanti
ADVANCED MATERIALS
(2018)
Proceedings Paper
Nanoscience & Nanotechnology
Subhendra D. Mahanti, Khang Hoang
INTERNATIONAL SYMPOSIUM ON CLUSTERS AND NANOMATERIALS
(2017)
Article
Physics, Multidisciplinary
S. S. Sarangi, P. V. Satyam, S. K. Nayak, S. D. Mahanti
INDIAN JOURNAL OF PHYSICS
(2017)
Article
Materials Science, Multidisciplinary
Sudipta Mahana, Bipul Rakshit, Raktima Basu, Sandip Dhara, Boby Joseph, U. Manju, Subhendra D. Mahanti, D. Topwal
Article
Nanoscience & Nanotechnology
Khang Hoang, Subhendra D. Mahanti
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2016)
Article
Materials Science, Multidisciplinary
David C. Miller, Subhendra D. Mahanti, Phillip M. Duxbury