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8 papers
Spontaneous Transition to a Correlated Phase of Skyrmions Observed in Real Space
John N. Moore, Hikaru Iwata, Junichiro Hayakawa +4
We conduct photoluminescence microscopy that is sensitive to both electron and nuclear spin polarization to investigate the changes that occur in the magnetic ordering in the vicin…
Transmission and reflection of charge density waves in a quantum Hall edge controlled by a metal gate
Masahiro Matsuura, Takaaki Mano, Takeshi Noda +3
Quantum energy teleportation (QET) is a proposed protocol related to the quantum vacuum. The edge channels in a quantum Hall system is well suited for the experimental verification…
Hyperfine-controlled domain-wall motion observed in real space and time
John N. Moore, Junichiro Hayakawa, Takaaki Mano +2
We perform real-space imaging of propagating magnetic domains in the fractional quantum Hall system using spin-sensitive photoluminescence microscopy. The propagation is continuous…
Non-equilibrium fractional quantum Hall states visualized by optically detected MRI
John N. Moore, Junichiro Hayakawa, Takaaki Mano +2
Using photoluminescence microscopy enhanced by MRI, we visualize in real space both electron and nuclear polarization occurring in non-equilibrium FQH liquids. We observe stripe-li…
Effect of disorder outside the CuO planes on of copper oxide superconductors
K. Fujita, T. Noda, K. M. Kojima +2
The effect of disorder on the superconducting transition temperature of cuprate superconductors is examined. Disorder is introduced into the cation sites in the plane adjac…
Intersubband absorption linewidth in GaAs quantum wells due to scattering by interface roughness, phonons, alloy disorder, and impurities
Takeya Unuma, Masahiro Yoshita, Takeshi Noda +2
We calculate the intersubband absorption linewidth in quantum wells (QWs) due to scattering by interface roughness, LO phonons, LA phonons, alloy disorder, and ionized impurities,…
Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
A. Lanzara, P. V. Bogdanov, X. J. Zhou +12
Coupling between electrons and phonons (lattice vibrations) drives the formation of the electron pairs responsible for conventional superconductivity. The lack of direct evidence f…
Anisotropic effect of field on the orthorhombic-to-tetragonal transition in the striped cuprate (La,Nd)_{2-x}Sr_xCuO_4
Z. A. Xu, N. P. Ong, T. Noda +2
The Nd-doped cuprate La_{2-y-x}Nd_ySr_xCuO_4 displays a first-order phase transition at T_d (= 74 K for x=0.10, y = 0.60) to a low-temperature tetragonal (LTT) phase. A magnetic fi…