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Surface density of states and topological edge states in non-centrosymmetric superconductors
Surface density of states topological edge states non-centrosymmetric superconductors
2010/11/19
We study Andreev bound state (ABS) and surface density of state (SDOS) of non-centrosymmetric
superconductor where spin-singlet d-wave pairing mixes with spin-triplet p (or f)-wave one by spinorbit c...
Density of states of a graphene in the presence of strong point defects
graphene strong point defects
2010/11/19
The density of states near zero energy in a graphene due to strong point defects with random
positions are computed. Instead of focusing on density of states directly, we analyze eigenfunctions of in...
Search for pressure induced superconductivity in CeFeAsO and CeFePO iron pnictides
pressure induced superconductivity CeFeAsO CeFePO iron pnictides
2010/11/18
The CeFeAsO and CeFePO iron pnictide compounds were studied via electrical transport measurements under high-pressure. In CeFeAsO polycrystals, the magnetic phases involving the Fe
and Ce ions coexis...
Topological phases and flat surface bands in superconductors without inversion symmetry
Topological phases flat surface bands superconductors without inversion symmetry
2010/11/18
We examine different topological phases in three-dimensional non-centrosymmetric superconductors with time-reversal symmetry by using three different types of topological invariants. Due to the bulk b...
Self consistent charge-current in a mesoscopic region attached to superconductor leads
Self consistent charge-current mesoscopic region superconductor leads
2010/11/18
We investigate the behavior of a electric potential profile inside a mesoscopic region attached to a pair of superconducting leads. It turns out that I−V characteristic curves are strongly modif...
Enhancing the superconducting transition temperature of BaSi2 by structural tuning
superconducting transition temperature of BaSi2
2010/11/18
We present a joint experimental and theoretical study of the superconducting phase of the lay-
ered binary silicide BaSi2. Compared with the layered AlB2 structure of graphite or diboride-like superc...
Optical investigations of the chemical pressurized EuFe2(As1-xPx)2: an s-wave superconductor with strong interband interaction
Optical investigations s-wave superconductor interband interaction
2010/11/18
Superconducting EuFe2(As0.82P0.18)2 single crystals are investigated by infrared spectroscopy in a wide frequency range. Below Tc = 28 K a superconducting gap forms at 20 = 9.5 meV = 3.8kBTc causing ...
Momentum-Resolved Ultrafast Electron Dynamics in Superconducting Bi2Sr2CaCu2O8+delta
Momentum-Resolved Ultrafast Electron Dynamics Bi2Sr2CaCu2O8+delta
2010/11/18
The non-equilibrium state of the high-Tc superconductor Bi2Sr2CaCu2O8+ and its ultrafast dynamics have been investigated by femtosecond time- and angle-resolved photoemission spectroscopy well below ...
Theory of the microwave induced zero resistance states in two-dimensional electron systems
the microwave induced zero resistance states two-dimensional electron systems
2010/11/18
The phenomena of the microwave induced zero resistance states (MIZRS) and the microwave
induced resistance oscillations (MIRO) were discovered in the ultraclean two-dimensional electron systems in 20...
Junction-Dependent Spectroscopic Signatures of Larkin-Ovchinnikov Superconductors from Hybridized Midgap States
Junction-Dependent Spectroscopic Signatures Hybridized Midgap States
2010/11/18
We have developed a discrete-lattice approach to calculate the conductance spectra between a
normal-metal and an s-wave Larkin-Ovchinnikov (LO) superconductor, with the junction interface
oriented a...
Counting Majorana zero modes in superconductors
Counting Majorana zero modes superconductors
2010/11/18
A counting formula for computing the number of (Majorana) zero modes bound to topological
point defects is evaluated in a gradient expansion for systems with charge-conjugation symmetry.This semi-cla...
Influence of electron-hole drag on conductivity of neutral and gated graphene
Influence of electron-hole drag gated graphene
2010/11/18
Conductivity of monolayer and two-layer graphene is considered with due regard for mutual drag of band elec-trons and holes. Search of contribution of the drag in conductivity shows that this effect c...
Graphene, a single atomic layer of graphite, first isolated in 2004 [2], has made a quantum leap in the exploration of the physics of two-dimensional electron systems [3, 4]. Since the initial report ...
Edge stability, reconstruction, zero-energy states and magnetism in triangular graphene quantum dots with zigzag edges
Edge stability magnetism zigzag edges
2010/11/17
We present the results of ab-initio density functional theory based calculations of the stability and reconstruction of zigzag edges in triangular graphene quantum dots. We show that, while the recons...
Electronic States and Superconducting Transition Temperature based on the Tomonaga-Luttinger liquid in Pr$_{2}$Ba$_{4}$Cu$_{7}$O$_{15-\delta}$
Pr2Ba4Cu7O15− first-principles calculations CuO double chain superconductivity
2010/11/17
An NQR experiment revealed superconductivity of Pr2Ba4Cu7O15− (Pr247) to be realized
on CuO double chain layers and suggests possibility of novel one-dimensional(1D) superconduc-
tivity. To c...
