1,068 research outputs found
The structure of -brane model
Recently, a family of interesting analytical brane solutions were found in
gravity with in Ref. [Phys. Lett. B 729, 127
(2014)]. In these solutions, inner brane structure can be turned on by tuning
the value of the parameter . In this paper, we investigate how the
parameter affects the localization and the quasilocalization of the
tensorial gravitons around these solutions. It is found that, in a range of
, despite the brane has an inner structure, there is no graviton
resonance. However, in some other regions of the parameter space, although the
brane has no internal structure, the effective potential for the graviton KK
modes has a singular structure, and there exists a series of graviton resonant
modes. The contribution of the massive graviton KK modes to the Newton's law of
gravity is discussed shortly.Comment: v2: 10 pages, 8 figures, to be published in EPJ
Exotic Superconducting Properties in Topological Nodal Semimetal PbTaSe
We report the electronic properties of superconductivity in the topological
nodal-line semimetal PbTaSe. Angle-resolved photoemission measurements
accompanied by band calculations confirmed the nodal-line band structure in the
normal state of single crystalline PbTaSe. Resistivity,
magnetic-susceptibility and specific heat measurements have also been performed
on high-quality single crystals. We observed upward features and large
anisotropy in upper critical field () measured in-plane
(H//\textbf{ab}) and out-plane (H//\textbf{c}), respectively. Especially,
measured in H//\textbf{ab} shows sudden upward features rather than a
signal of saturation in ultralow temperatures. The specific heat measurements
under magnetic field reveal a full superconducting gap with no gapless nodes.
These behaviors in this clean noncentrosymmetric superconductor is possibly
related to the underlying exotic physics, providing important clue for
realization of topological superconductivity.Comment: 6 pages, 5 figures,1 table;Accepted for publication on PR
(2′-Amino-4,4′-bi-1,3-thiazol-2-aminium-κ2 N,N′)aqua[citrato(4−)-κ3 O,O′,O′′)chromium(III) dihydrate
In the title compound, [Cr(C6H7N4S2)(C6H4O7)(H2O)]·2H2O, the CrIII atom is in a distorted octahedral environment, coordinated by one water molecule, two N atoms from a protonated diaminobithiazole ligand and three O atoms from a citrate(4−) anion. The complex is zwitterionic, with the H atom from the uncoordinated carboxylate group of the citrate anion transferred to one amino group of the diaminobithiazole ligand. O—H⋯O and N—H⋯O hydrogen bonds link the complexes into layers including the two uncoordinated water molecules
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