Unconventional spin freezing and fluctuations in the frustrated antiferromagnet NiGa2S4 (2008)
MacLaughlin, D. E., Nambu, Y., Nakatsuji, S., Heffner, R. H., Shu, Lei, Bernal, O. O., ...
Muon spin rotation (muSR) experiments reveal unconventional spin freezing and dynamics in the two-dimensional (2D) triangular lattice antiferromagnet NiGa2S4. Long-lived disordered Ni-spin freezing...
High Field ESR in the Two-Dimensional Triangular Lattice Antiferromagnet NiGa2S4 (2008)
Yamaguchi, H., Kimura, S., Hagiwara, M., Nambu, Y., Nakatsuji, S., Maeno, Y., ...
In this Letter, we report the results of ESR measurements in high magnetic fields up to about 53 T on single crystals of NiGa2S4 to clarify the spin dynamics in more detail. We have found that the...
Takeya, H., Ishida, K., Kitagawa, K., Ihara, Y., Onuma, K., Maeno, Y., ...
We have performed $^{69,71}$Ga nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) and muon spin rotation/resonance on the quasi two-dimensional antiferromagnet (AFM)...
Takubo, K., Mizokawa, T., Nambu, Y., Onuma, K., Tonomura, H., ...
We have studied the electronic structure of the Ni triangular lattice in NiGa$_2$S$_4$ using photoemission spectroscopy and subsequent model calculations. The cluster-model analysis of the Ni 2$p$...
Simulation of Acoustic Black Hole in a Laval Nozzle (2006)
Furuhashi, H., Nambu, Y., Saida, H.
A numerical simulation of fluid flows in a Laval nozzle is performed to observe formations of acoustic black holes and the classical counterpart to Hawking radiation under a realistic setting of the...
Nambu, Y., Usami, K., Tsuda, Y., Matsumoto, K., Nakamura, K.
We report the generation of polarization-entangled photons by femtosecond-pulse-pumped spontaneous parametric down-conversion in a cascade of two type-I crystals. Highly entangled pulsed states were...
Restoration of Entanglement by Spectral Filters (2001)
Usami, K., Nambu, Y., Ishizaka, S., Hiroshima, T., Tsuda, Y., Matsumoto, K., ...
We experimentally demonstrate that entanglement of bi-photon polarization state can be restored by spectral filters. This restoration procedure can be viewed as a new class of quantum eraser, which...
Quantum Key Distribution using Two Coherent States of Light and their Superposition (1999)
Nambu, Y., Tomita, A., Chiba-Kohno, Y., Nakamura, K.
Quantum mechanical complementarity ensures the security of the key-distribution scheme reported by Brassard and Bennet in 1984 (BB84), but does not prohibit use of multi-photons as a signal carrier....
Cosmological perturbation with two scalar fields in reheating after inflation (1997)
We investigate the cosmological perturbation of two-scalar field model during the reheating phase after inflation. Using the exact solution of the perturbation in long-wavelength limit, which is...
Lack of cell surface Fas/APO-1 expression in pulmonary adenocarcinomas.
Nambu, Y, Hughes, S J, Rehemtulla, A, Hamstra, D, Orringer, M B, Beer, D G
The Fas receptor and ligand initiate an apoptotic pathway. Alterations in this pathway within tumor cells can result in escape from apoptosis and immune surveillance. We evaluated Fas protein...
Lack of cell surface Fas/APO-1 expression in pulmonary adenocarcinomas.
Nambu, Y, Hughes, S J, Rehemtulla, A, Hamstra, D, Orringer, M B, Beer, D G
The Fas receptor and ligand initiate an apoptotic pathway. Alterations in this pathway within tumor cells can result in escape from apoptosis and immune surveillance. We evaluated Fas protein...