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- The University of TokyoJP178 papers
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6 papers · 2 filters
Phonon, Two-Magnon and Electronic Raman Scattering of Fe1+yTe1-xSex
K. Okazaki, S. Sugai, S. Niitaka +1
We have measured Raman scattering spectra of single-crystalline FeTe0.6Se0.4 (T_c ~ 14.5 K) and its parent compound Fe1.074Te at various temperatures. In the parent compound Fe1.07…
Using Superconducting Qubit Circuits to Engineer Exotic Lattice Systems
Dimitris I. Tsomokos, Sahel Ashhab, Franco Nori
We propose an architecture based on superconducting qubits and resonators for the implementation of a variety of exotic lattice systems, such as spin and Hubbard models in higher o…
Correlated flux noise and decoherence in two inductively coupled flux qubits
Fumiki Yoshihara, Yasunobu Nakamura, Jaw-Shen Tsai
We have studied decoherence in a system where two Josephson-junction flux qubits share a part of their superconducting loops and are inductively coupled. By tuning the flux bias co…
Structural Features of Layered Iron Pnictide Oxides (Fe2As2)(Sr4M2O6)
H. Ogino, S. Sato, Y. Matsumura +6
Structural features of newly found perovskite-based iron pnictide oxide system have been systematically studied. Compared to REFePnO system, perovskite-based system tend to have lo…
Tunneling between Two Helical Superconductors via Majorana Edge Channels
Yasuhiro Asano, Yukio Tanaka, Naoto Nagaosa
We discuss electric transport through a point contact which bridges Majorana fermion modes appearing at edges of two helical superconductors. The contents focus on effects of inter…
Quantum impurity spin in Majorana edge fermions
Ryuichi Shindou, Akira Furusaki, Naoto Nagaosa
We show that Majorana edge modes of two-dimensional spin-triplet topological superconductors have Ising-like spin density whose direction is determined by the d-vector characterizi…