Zobrazeno 1 - 10
of 485
pro vyhledávání: '"Onari, S."'
Autor:
Butler, C. J., Kohsaka, Y., Yamakawa, Y., Bahramy, M. S., Onari, S., Kontani, H., Hanaguri, T., Shamoto, S.
In BaNiS2 a Dirac nodal-line band structure exists within a two-dimensional Ni square lattice system, in which significant electronic correlation effects are anticipated. Using scanning tunneling microscopy, we discover signs of correlated-electron b
Externí odkaz:
http://arxiv.org/abs/2207.11920
Autor:
Shimojima, T., Motoyui, Y., Taniuchi, T., Bareille, C., Onari, S., Kontani, H., Nakajima, M., Kasahara, S., Shibauchi, T., Matsuda, Y., Shin, S.
Publikováno v:
Science 373, 1122 (2021)
Nematicity is ubiquitous in electronic phases of high transition temperature superconductors, particularly in iron-based superconductors (IBSCs). Order parameter that characterizes the nematic phase has been investigated in momentum space, but its re
Externí odkaz:
http://arxiv.org/abs/2108.06122
Publikováno v:
Phys. Rev. B 88, 041106(R) (2013)
To understand the recently established unique magnetic and superconducting phase diagram of LaFeAsO$_{1-x}$H$_x$, we analyze the realistic multiorbital tight-binding model for $x=0 \sim 0.4$ beyond the rigid band approximation. Both the spin and orbi
Externí odkaz:
http://arxiv.org/abs/1304.3933
Autor:
Yoshida, T., Ideta, S., Shimojima, T., Malaeb, W., Shinada, K., Suzuki, H., Nishi, I., Fujimori, A., Ishizaka, K., Shin, S., Nakashima, Y., Anzai, H., Arita, M., Ino, A., Namatame, H., Taniguchi, M., Kumigashira, H., Ono, K., Kasahara, S., Shibauchi, T., Terashima, T., Matsuda, Y., Nakajima, M., Uchida, S., Tomioka, Y., Ito, T., Kihou, K., Lee, C. H., Iyo, A., Eisaki, H., Ikeda, H., Arita, R., Saito, T., Onari, S., Kontani, H.
Publikováno v:
Sci. Rep. 4, 7292 (2014)
In the iron pnictide superconductors, two distinct unconventional mechanisms of superconductivity have been put forth: One is mediated by spin fluctuations leading to the s+- state with sign change of superconducting gap between the hole and electron
Externí odkaz:
http://arxiv.org/abs/1301.4818
Publikováno v:
J. Phys. Soc. Jpn. 82, 014702 (2013)
In order to study the pairing symmetry in non-centrosymmetric superconductors, we solve the linearized Eliashberg's equation on the two-dimensional extended Hubbard model in the presence of the Rashba-type spin-orbit coupling (RSOC) within the random
Externí odkaz:
http://arxiv.org/abs/1208.2190
Publikováno v:
Solid State Communications, 152 (2012) 718
The main features in iron-based superconductors would be (i) the orthorhombic transition accompanied by remarkable softening of shear modulus, (ii) high-Tc superconductivity close to the orthorhombic phase, and (iii) nematic transition in the tetrago
Externí odkaz:
http://arxiv.org/abs/1203.4602
Publikováno v:
Phys. Rev. B 75, 235430 (2007)
The electron-phonon matrix element for edge states of carbon nanotubes and graphene at zigzag edges is calculated for obtaining renormalized energy dispersion of the edge states. Self-energy correction by electron-phonon interaction contributes to th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703318
Publikováno v:
J. Phys. Soc. Jpn. 76, 033702 (2007)
We present a new mechanism of carbon nanotube superconductivity that originates from edge states which are specific to graphene. Using on-site and boundary deformation potentials which do not cause bulk superconductivity, we obtain an appreciable tra
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611452
Superconductivity in repulsive electron systems having three-dimensional disconnected Fermi surfaces
Publikováno v:
Phys. Rev. B 68, 024525 (2003)
The idea of raising Tc in the spin-fluctuation mediated superconductivity on disconnected Fermi surfaces with the gap function changing sign across but not within the Fermi pockets, proposed by Kuroki and Arita for two dimensions (2D), is here extend
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303124
Optical conductivity spectra of single crystals of Ca_1-xSr_xVO_3 have been studied to elucidate how the electronic behavior depends on the strength of the electron correlation without changing the nominal number of electrons per vanadium atom. The e
Externí odkaz:
http://arxiv.org/abs/cond-mat/9801086