Zobrazeno 1 - 10
of 142
pro vyhledávání: '"Ota, Yukihiro"'
We solve the Bogoliubov-de Gennes equations self-consistently for d-wave superconductors with [110] surfaces. We find spontaneous breaking of time-reversal symmetry (TRS) caused by the spontaneous occurrence of a complex order parameter with an exten
Externí odkaz:
http://arxiv.org/abs/1709.06638
We explore the ground states in population-imbalanced attractive 1-D fermionic optical lattice filling $p$ orbitals over the lowest $s$ one by using the density-matrix-renormalization-group (DMRG) method. The DMRG calculations find the occurrence of
Externí odkaz:
http://arxiv.org/abs/1611.06422
Publikováno v:
Phys. Rev. B 96, 060503 (2017)
We solve the Bogoliubov-de Gennes equations self-consistently for the $d$-wave order parameter in nanoscale $d$-wave systems with [110] surfaces and show that spontaneous time-reversal symmetry (TRS) breaking occurs at low temperatures due to a spont
Externí odkaz:
http://arxiv.org/abs/1610.05501
Autor:
Nagai, Yuki, Ota, Yukihiro
Publikováno v:
Phys. Rev. B 94, 134516 (2016)
We study the temperature dependence of nuclear magnetic relaxation (NMR) rates to detect a sign of topological superconductivity in doped topological insulators, such as $M$($=$Cu,Nb,Sr)$_{x}$Bi$_{2}$Se$_{3}$ and Sn$_{1-x}$In$_{x}$Te. The Hebel-Slich
Externí odkaz:
http://arxiv.org/abs/1605.08164
Publikováno v:
Phys. Rev. B 93, 220505 (2016)
We show that a critical temperature Tc for spin-singlet two-dimensional superconductivity is enhanced by a cooperation between the Zeeman magnetic field and the Rashba spin-orbit coupling, where a superconductivity becomes topologically non-trivial b
Externí odkaz:
http://arxiv.org/abs/1602.06087
We developed an interface program between a program suite for an automated search of chemical reaction pathways, GRRM, and a program package of semiempirical methods, MOPAC. A two-step structural search is proposed as an application of this interface
Externí odkaz:
http://arxiv.org/abs/1602.03174
Publikováno v:
Physica C 518 (2015) 5-9
We construct a low-energy effective theory of topological $s$-wave pairing superconductors, focusing on the mean-field model of superconductor $\mbox{Cu}_{x}\mbox{Bi}_{2}\mbox{Se}_{3}$. Our approach is second-order perturbation with respect to the in
Externí odkaz:
http://arxiv.org/abs/1510.06910
Publikováno v:
Phys. Rev. B 92, 180502(R) (2015)
We reveal that three-dimensional multi-orbital topological superconductivity can be identified by a bulk measurement, i.e., the temperature dependence of nuclear magnetic relaxation (NMR) rates. Below a critical temperature $T_{\rm c}$, the NMR rate
Externí odkaz:
http://arxiv.org/abs/1504.08095
Publikováno v:
J. Phys.: Conf. Ser. 568 022006 (2014)
Low-temperature characters of superconducting devices yield definite probes for different superconducting phenomena. We study the macroscopic quantum tunneling (MQT) in a Josephson junction, composed of a single-gap superconductor and a two-gap super
Externí odkaz:
http://arxiv.org/abs/1412.5276
We study the quasiparticle spectrum of 2D topological $s$-wave superconductors with the Zeeman magnetic field and the Rashba spin-orbit coupling in the presence of spatial inhomogeneity. Solving the real-space Bogoliubov-de Gennes equations, we focus
Externí odkaz:
http://arxiv.org/abs/1407.1125