Article
Physics, Multidisciplinary
Shinji Kawasaki, Madoka Ito, Dai Kamijima, Chengtian Lin, Guo-qing Zheng
Summary: This study discovered a magnetic-field-induced charge-density-wave order in copper oxide superconductors using nuclear magnetic resonance, highlighting the importance of charge in high-temperature superconductivity. The results show that the CDW order replaces the antiferromagnetic order before superconductivity appears and disappears before superconductivity is optimized. The onset temperature of CDW scales with the pseudogap temperature, and charge fluctuations dominate the spin-lattice relaxation process.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2021)
Article
Multidisciplinary Sciences
Hoyoung Jang, Sanghoon Song, Takumi Kihara, Yijin Liu, Sang-Jun Lee, Sang-Youn Park, Minseok Kim, Hyeong-Do Kim, Giacomo Coslovich, Suguru Nakata, Yuya Kubota, Ichiro Inoue, Kenji Tamasaku, Makina Yabashi, Heemin Lee, Changyong Song, Hiroyuki Nojiri, Bernhard Keimer, Chi-Chang Kao, Jun-Sik Lee
Summary: Researchers have found that the photoinduced normal state of high-T-c cuprates exhibits similar characteristics to those in equilibrium conditions under magnetic fields, such as the competition between superconductivity and charge density waves.
Article
Materials Science, Multidisciplinary
A. Kataria, J. A. T. Verezhak, O. Prakash, R. K. Kushwaha, A. Thamizhavel, S. Ramakrishnan, M. S. Scheurer, A. D. Hillier, R. P. Singh
Summary: The nature of the superconducting phase of single-crystalline Lu3Os4Ge13 is investigated using muon-spin relaxation and rotation (mu SR) measurements. The results show the presence of static or quasistatic magnetic fields in the superconducting state, breaking time-reversal symmetry, with an exceptionally large internal magnetic-field scale. Transverse-field mu SR measurements in the vortex state indicate a complex gap function with significantly different strengths on different parts of the Fermi surface, suggesting the essential role of electron-electron interactions in stabilizing pairing in the system and demonstrating its unconventional nature.
Article
Physics, Applied
Jun-Yi Ge, Vladimir N. Gladilin, Joris van de Vondel, Victor V. Moshchalkov
Summary: By using low-temperature scanning Hall probe microscope, the critical magnetic fields of superconducting Pb strips were experimentally studied. It was found that the penetration magnetic field follows a power law dependence with strip width, and vortices can only penetrate the strips when the energy barrier at the edges is completely suppressed. Our study provides important implications for designing nanostructured devices with superconducting strips.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Tao Yu, Dante M. Kennes, Angel Rubio, Michael A. Sentef
Summary: Recent measurements of resistivity in magic-angle twisted bilayer graphene near the superconducting transition temperature exhibit twofold anisotropy when changing the direction of an in-plane magnetic field. This was interpreted as evidence for exotic nematic superconductivity. However, experimental findings suggest that in-plane magnetic field can hybridize chiral superconducting order parameters to induce nematicity in the transport response.
PHYSICAL REVIEW LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Dipak Patel, Akiyoshi Matsumoto, Hiroaki Kumakura, Minoru Maeda, Su-Hun Kim, Hao Liang, Yusuke Yamauchi, Seyong Choi, Jung Ho Kim, Md Shahriar A. Hossain
Summary: A superconducting joint architecture is proposed to screen external magnetic fields in MRI magnet applications. By exploiting the diamagnetic property of superconducting MgB2, a novel joint design successfully achieved magnetic field screening effect, while maintaining a constant critical current.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
M. Yokoyama, H. Nishigaki, S. Ogawa, S. Nita, H. Shiokawa, K. Matano, Guo-qing Zheng
Summary: Electronic nematicity is observed in various new materials as a result of rotational symmetry breaking. In this study, we successfully manipulate the nematic director, the d vector, in the spin-triplet superconducting state of CuxBi2Se3 by magnetic fields. The ac susceptibility related to the upper critical field exhibits a twofold symmetry at H = 0.5 T and a sixfold symmetry at H = 1.5 T, which is unprecedented in any superconductor. The d vector is initially locked in a certain direction but becomes unlocked by a threshold field, respecting the trigonal crystal symmetry.
Article
Chemistry, Physical
Wafa Ali Soomro, Youguang Guo, Haiyan Lu, Jianxun Jin, Boyang Shen, Jianguo Zhu
Summary: High-temperature superconductor (HTS) bulks have shown great potential for industrial and commercial applications due to their ability to trap larger magnetic fields compared to conventional permanent magnets. Previous research on the electromagnetic properties of HTS focused solely on the AC magnetic fields and the associated AC loss. This paper provides a comprehensive examination of the AC loss measurement under various conditions, comparing the results to the finite element-based H-formulation. The findings offer insights into material characterization that will be valuable for the design of future large-scale HTS applications.
Article
Physics, Applied
Laura Gozzelino, Michela Fracasso, Mykola Solovyov, Fedor Gomory, Andrea Napolitano, Roberto Gerbaldo, Gianluca Ghigo, Francesco Laviano, Daniele Torsello, Mihai A. Grigoroscuta, Gheorghe Aldica, Mihail Burdusel, Petre Badica
Summary: The addition of a ferromagnetic layer can significantly enhance the shielding ability of superconducting screens, especially in the transverse field direction. This method can increase the shielding factor by up to 8 times, reaching values of 10(2) or higher in the inner half of the shield. Similarly, in the axial field direction, the addition of ferromagnetic material can slightly decrease the shielding performance, but can widen the range of applied fields where high shielding factors occur near the close extremity of the shield.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Physics, Applied
Jose Alberto Nava Aquino, Rogerio de Sousa
Summary: Recent experiments have shown that the application of an external magnetic field in the range of 10-100 G can transform noise into a Lorentzian peak at ? = 0. A model based on independent impurity spin flips with coexisting cross and direct mechanisms of spin relaxation is proposed to explain these experiments. The model suggests that the application of an external magnetic field can reduce flux noise in qubits.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
A. Roitman, A. Shaulov, Y. Yeshurun
Summary: Coplanar microwave resonators made of NbN and YBa2Cu3O7-delta show similar behavior under the influence of magnetic field, with notable difference between zero-field-cooled (ZFC) and field-cooled (FC) measurements. This difference is attributed to the presence of screening currents in ZFC but not in FC measurements.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Civil
Mengxiao Song, Danfeng Zhou, Peichang Yu, Yukai Zhao, Yichuan Wang, Yiqiu Tan, Jie Li
Summary: This paper derives an analytical calculation model for electromagnetic forces in SC EDS system and verifies it using experimental data. The results of the experiment confirm the effectiveness of the proposed calculation model.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Instruments & Instrumentation
T. Braine, G. Rybka, A. A. Baker, J. Brodsky, G. Carosi, N. Du, N. Woollett, S. Knirck, M. Jones
Summary: This paper presents a surface impedance measurement of a bulk metal niobium-titanium superconducting radio frequency (SRF) cavity in a magnetic field. A novel method is used to separate the surface resistance contributions of the cavity end caps and walls. The results show that the primary degradation of the quality factor in a high magnetic field comes from the perpendicular surfaces (cavity end caps), while the parallel surface resistances (walls) remain relatively constant. This has implications for applications requiring high-Q cavities in strong magnetic fields.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Engineering, Electrical & Electronic
Y. Tsui, D. A. Moseley, A. R. Dennis, Y. -H. Shi, M. R. Beck, V. Cientanni, D. A. Cardwell, J. H. Durrell, Mark D. Ainslie
Summary: One potential application of magnetized RE-Ba-Cu-O bulk superconductors is as a high-field alternative to conventional permanent magnets in desktop NMR and MRI systems. Pulsed field magnetization (PFM) is a promising method, but the trapped fields obtained by PFM are lower than those obtained using quasi-static methods. In this study, a multi-pulse, stepwise cooling (MPSC) method was used to achieve a higher trapped field in a Gd-Ba-Cu-O ring sample.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Computer Science, Information Systems
Mohammad Yazdani-Asrami, Wenjuan Song, Min Zhang, Weijia Yuan, Xiaoze Pei
Summary: This study investigated the effect of different phase angles and amplitudes of magnetic field harmonics on the magnetization loss of high temperature superconducting coated conductors (CCs), finding that the phase angle of the field harmonic has a significant impact on the magnetization loss.
Article
Materials Science, Multidisciplinary
Shinji Kawasaki, Tomosuke Mabuchi, Satoki Maeda, Tomoki Adachi, Tasuku Mizukami, Kazutaka Kudo, Minoru Nohara, Guo-qing Zheng
Article
Physics, Applied
Guo-qing Zheng, K. Matano, S. Kawasaki, Z. Li, G. L. Sun, D. L. Sun, C. T. Lin, G. F. Chen, J. L. Luo, N. L. Wang, Z. A. Ren, Z. X. Zhao
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2010)
Article
Physics, Multidisciplinary
Shinji Kawasaki, Kouta Katayama, Masahide Nishiyama, Hisashi Kotegawa, Tatsuo C. Kobayashi, Hitoshi Sugawara, Daisuke Kikuchi, Hideyuki Sato, Guo-qing Zheng
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2008)
Article
Physics, Condensed Matter
M. Yashima, S. Kawasaki, H. Mukuda, Y. Kitaoka, H. Shishido, R. Settai, Y. Onuki
PHYSICA B-CONDENSED MATTER
(2008)
Article
Materials Science, Multidisciplinary
S. Kawasaki, M. Yashima, Y. Kitaoka, K. Takeda, K. Shimizu, Y. Oishi, M. Takata, T. C. Kobayashi, H. Harima, S. Araki, H. Shishido, R. Settai, Y. Onuki
Article
Materials Science, Multidisciplinary
S. Kawasaki, K. Shimada, G. F. Chen, J. L. Luo, N. L. Wang, Guo-qing Zheng
Article
Materials Science, Multidisciplinary
S. Kawasaki, K. Katayama, H. Sugawara, D. Kikuch, H. Sato, Guo-qing Zheng
Article
Materials Science, Multidisciplinary
K. Tahara, Z. Li, H. X. Yang, J. L. Luo, S. Kawasaki, Guo-qing Zheng
Article
Materials Science, Multidisciplinary
S. Kawasaki, T. Motohashi, K. Shimada, T. Ono, R. Kanno, M. Karppinen, H. Yamauchi, Guo-qing Zheng
Article
Physics, Applied
S. Kawasaki, T. Tabuchi, X. F. Wang, X. H. Chen, Guo-qing Zheng
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2010)
Article
Physics, Multidisciplinary
Shinji Kawasaki, Toshihide Oka, Akira Sorime, Yuji Kogame, Kazuhiro Uemoto, Kazuaki Matano, Jing Guo, Shu Cai, Liling Sun, John L. Sarrao, Joe D. Thompson, Guo-qing Zheng
COMMUNICATIONS PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
A. Harada, S. Kawasaki, H. Mukuda, Y. Kitaoka, A. Thamizhavel, Y. Okuda, R. Settai, Y. Onuki, K. M. Itoh, E. E. Haller, H. Harima
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2007)
Article
Materials Science, Multidisciplinary
M. Yashima, S. Kawasaki, H. Mukuda, Y. Kitaoka, H. Shishido, R. Settai, Y. Onuki
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2007)
Article
Materials Science, Multidisciplinary
S. Kawasaki, T. Sada, T. Miyoshi, H. Kotegawa, H. Mukuda, Y. Kitaoka, T. C. Kobayashi, T. Fukuhara, K. Maezawa, K. M. Itoh, E. E. Haller
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2007)