81 citations · 324 across the 9 of their papers we have counts for
9 papers
51V-NMR study on the S=1/2 square lattice antiferromagnet K2V3O8
H. Takeda, H. Yasuoka, M. Yoshida +4
Static and dynamic properties of the quasi-two-dimensional antiferromagnet KVO have been investigated by V-NMR experiments on nonmagnetic V sites. Above t…
Field-enhanced quantum fuctuation in S=1/2 frustrated square lattice
H. Yamaguchi, Y. Sasaki, T. Okubo +9
We present a new model compound with the S = 1/2 frustrated square lattice composed of the charge-transfer salt (o-MePy-V)PF6. Ab initio calculations indicate the formation of an S…
Classical Spin Nematic Transition in LiGaInCrO
R. Wawrzyńczak, Y. Tanaka, M. Yoshida +6
We present the results of a combined Li NMR and diffraction study on LiGaInCrO, a member of LiGaInCrO "breathing" pyrochlore fam…
Gate-voltage induced trions in suspended carbon nanotubes
M. Yoshida, A. Popert, Y. K. Kato
We observe trion emission from suspended carbon nanotubes where carriers are introduced electrostatically using field-effect transistor structures. The trion peak emerges below the…
Exciton diffusion, end quenching, and exciton-exciton annihilation in individual air-suspended carbon nanotubes
A. Ishii, M. Yoshida, Y. K. Kato
Luminescence properties of carbon nanotubes are strongly affected by exciton diffusion, which plays an important role in various nonradiative decay processes. Here we perform photo…
Stark effect of excitons in individual air-suspended carbon nanotubes
M. Yoshida, Y. Kumamoto, A. Ishii +2
We investigate electric-field induced redshifts of photoluminescence from individual single-walled carbon nanotubes. The shifts scale quadratically with field, while measurements w…
Giant circular dichroism in individual carbon nanotubes induced by extrinsic chirality
A. Yokoyama, M. Yoshida, A. Ishii +1
Circular dichroism is widely used for characterizing organic and biological materials, but measurements at a single molecule level are challenging because differences in absorption…
Spontaneous exciton dissociation in carbon nanotubes
Y. Kumamoto, M. Yoshida, A. Ishii +3
Simultaneous photoluminescence and photocurrent measurements on individual single-walled carbon nanotubes reveal spontaneous dissociation of excitons into free electron-hole pairs.…
Heterogeneous spin state in the field-induced phase of volborthite as seen via 51V nuclear magnetic resonance
M. Yoshida, M. Takigawa, H. Yoshida +2
We report results of 51V NMR in the field-induced phase of volborthite Cu3V2O7(OH)dot2H2O, a spin-1/2 antiferromagnet on a distorted kagome lattice. In magnetic fields above 4.5 T,…