K. Watanabe

Publications15
h-index6
Citations177
Highly Influential Citations9
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A Comprehensive Search for Gamma-Ray Lines in the First Year of Data from the INTEGRAL Spectrometer
We have carried out an extensive search for gamma-ray lines in the first year of public data from the spectrometer (SPI) on the INTEGRAL mission. INTEGRAL has spent a large fraction of its observing… Expand
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Electronic Compressibility of Magic-Angle Graphene Superlattices.
We report the first electronic compressibility measurements of magic-angle twisted bilayer graphene. The evolution of the compressibility with carrier density offers insights into the… Expand
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Constraints on Association of Single-Pulse Gamma-Ray Bursts and Supernovae
We explore the hypothesis, similar to one recently suggested by Bloom and colleagues, that some nearby supernovae are associated with smooth, single-pulse gamma-ray bursts, possibly having no… Expand
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(E)-3,4,5-Trimethoxy-N′-[(4-oxo-4H-chromen-3-yl)methylidene]benzohydrazide
TLDR
In the title chromone-tethered benzohydrazide derivative, C20H18N2O6, the atoms of the E-3-(hydrazonomethyl)-4H-chromen-4-one segment are essentially coplanar, the largest deviation being 0.065 (6) Å. Expand
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Symmetry breaking in twisted double bilayer graphene
The flat bands that appear in some twisted van der Waals heterostructures provide a setting in which strong interactions between electrons lead to a variety of correlated phases 1 – 20 . In… Expand
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(E)-4-Methyl-N′-[(4-oxo-4H-chromen-3-yl)methylidene]benzohydrazide
TLDR
In the title chromone-tethered benzohydrazide derivative, C18H14N2O3, the 4H-chromen-4-one and the –CH=N–NH–CO– units are each essentially planar, with the largest deviations from thei planes being 0.052 (2) and 0.003  (2) Å, respectively. Expand
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(E)-4-Methoxy-N′-[(6-methyl-4-oxo-4H-chromen-3-yl)methylidene]benzohydrazide monohydrate
TLDR
In the title hydrate, C19H16N2O4·H2O, the 4H-chromen-4-one segment is slightly twisted, with a dihedral angle between the two six-membered rings of 3.30 (5)°. Expand
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(E)-3,4,5-Trimethoxy-N′-[(6-methoxy-4-oxo-4H-chromen-3-yl)methylidene]benzohydrazide monohydrate
TLDR
In the title chromone-tethered benzohydrazide derivative, C21H20N2O7·H2O, the atoms of the 4H-chromen-4-one segment are essentially coplanar (r.m.s. deviation = 0.0073 Å) with the largest deviation from the mean plane being found for the benzene C atom. Expand
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Universal instability of dust ion-sound waves and dust-acoustic waves
It is shown that the dust ion-sound waves (DISW) and the dust-acoustic waves (DAW) are universally unstable for wave numbers less than some critical wave number. The basic dusty plasma state is… Expand
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Scaling magnetic tunnel junction down to single-digit nanometers—Challenges and prospects
TLDR
We review the scaling of magnetic tunnel junction (MTJ) technology, from in-plane anisotropy MTJs to perpendicular interfacial- or shape-anisotropic MTJs. Expand
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