Generating 77 T using a portable pulse magnet for single-shot quantum beam experiments

Ikeda, Akihiko; Matsuda, Yasuhiro H.; Zhou, Xu-Guang; Peng, Shiyue; Ishii, Yasuaki; Yajima, Takeshi; Kubota, Yuya; Inoue, Ituro; Inubishi, Yuichi; Tono, Kensuke; Yabashi, Makina

doi:10.1063/5.0088134

Cited by 12 publications

(2 citation statements)

References 34 publications

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“…This indicates that the HS-IS duality, which is included in the present model, is an important factor in LaCoO 3 . Further microscopic experiments such as X-ray diffraction 36 and thorough theoretical investigations are mandatory to clarify this point.…”

Section: Discussionmentioning

confidence: 99%

Signature of spin-triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T

et al. 2023

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Bose-Einstein condensation of electron-hole pairs, exciton condensation, has been effortfully investigated since predicted 60 years ago. Irrefutable evidence has still been lacking due to experimental difficulties in verifying the condensation of the charge neutral and non-magnetic spin-singlet excitons. Whilst, condensation of spin-triplet excitons is a promising frontier because spin supercurrent and spin-Seebeck effects will be observable. A canonical cobaltite LaCoO3 under very high magnetic fields is a propitious candidate, yet to be verified. Here, we unveil the exotic phase diagram of LaCoO3 up to 600 T generated using the electromagnetic flux compression method and the state-of-the-art magnetostriction gauge. We found the continuous magnetostriction curves and a bending structure, which suggest the emergence of two distinct spin-triplet exciton condensates. By constructing a phenomenological model, we showed that quantum fluctuations of excitons are crucial for the field-induced successive transitions. The spin-triplet exciton condensation in a cobaltite, which is three-dimensional and thermally equilibrated, opens up a novel venue for spintronics technologies with spin-supercurrent such as a spin Josephson junction.

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Section: Discussionmentioning

confidence: 99%

Signature of spin-triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T

et al. 2023

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“…In the previous work, a simulation model was proposed to analyze the solid-liquid phase transition process of STCs during discharge [31]. The model was validated by comparing the simulation results and the STC experimental data of Portable INtense Kyokugenjiba system [32]. In addition, the STC shock dynamics model and the transient circuit model considering conductor melting were investigated in previous studies [33,34].…”

Section: Introductionmentioning

confidence: 99%

Modelling of the conductor vaporization process for single-turn coil

Ge,

Pan,

Liu

et al. 2024

Phys. Scr.

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Single-turn coil (STC) is a destructive pulsed magnet aiming at 100–300 T ultra high magnetic field. A conductor vaporization model is proposed for STCs. Using this model, the vaporization characteristics at different inner diameters and discharge currents are investigated. The results show that vaporization always starts from the inner surface of the conductor, but only from the interior of the conductor at higher current and smaller inner diameter. Moreover, the vaporization causes the electrical conductivity to decrease, leading the area with the highest current density to advance to the interior of the conductor. By comparison, the vaporization start time decreases as the current increases and the inner diameter decreases, and the vaporization start time at different diameters tends to coincide as current increases. The model in this study is validated by checking the consistency of the magnetic flux density at the central axis of STCs of the simulation results and the experimental data.

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Nonlinear X-Ray Spectroscopy

Kubota,

Tamasaku

2023

Springer Series in Optical Sciences

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Generating 77 T using a portable pulse magnet for single-shot quantum beam experiments

Cited by 12 publications

References 34 publications

Signature of spin-triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T

Signature of spin-triplet exciton condensations in LaCoO3 at ultrahigh magnetic fields up to 600 T

Modelling of the conductor vaporization process for single-turn coil

Nonlinear X-Ray Spectroscopy

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