Results 41 to 50 of about 651,102 (346)

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

open access: yesAdvanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian   +6 more
wiley   +1 more source

The Formalistic Reading of Nasta'līq and Tash'ir Elements in Book Illustration of Timurid to Qajar Periods [PDF]

open access: yesنگره, 2018
Nasta'līq and Tash'ir are two companion elements in Iranian book illustration. The two art forms have been shaped almost at the same historic era. Therefore, they have been frequently used together. Accordingly, addressing this issue in the present study
فائزه نوروزی   +2 more
doaj   +1 more source

The Improved Bounce Solution of SU(2)-Higgs Model

open access: yes, 1993
We further develop the reduced action formalism of the SU(2)-Higgs model originally given by Aoyama et.al.. Our new ansatz for the sphaleron solution makes it possible to apply this formalism to all range of the Higgs self coupling constant. Based on the
Kobayashi, Yuji
core   +2 more sources

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu   +3 more
wiley   +1 more source

Canonical formalism for simplicial gravity

open access: yes, 2011
We summarise a recently introduced general canonical formulation of discrete systems which is fully equivalent to the covariant formalism. This framework can handle varying phase space dimensions and is applied to simplicial gravity in particular.Comment:
  +6 more
core   +4 more sources

Inquiring and Critique of Allen Wood's Ideas on the Problem of Formalism in Kant's Ethics from Robert Pippin Point of View [PDF]

open access: yesحکمت و فلسفه, 2019
In this essay, we are trying to inquire and critique Allen Wood's ideas about the problem of formalism in Kantian Ethics. Wood is one of Kant's interpreters who has been dealing with the formalism problem for so many years.
Seyedeh Massoumeh Mousavi   +1 more
doaj   +1 more source

On Pure Spinor Superfield Formalism

open access: yes, 2007
We show that a certain superfield formalism can be used to find an off-shell supersymmetric description for some supersymmetric field theories where conventional superfield formalism does not work.
A. Bilal   +25 more
core   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Y-formalism and $b$ ghost in the Non-minimal Pure Spinor Formalism of Superstrings

open access: yes, 2007
We present the Y-formalism for the non-minimal pure spinor quantization of superstrings. In the framework of this formalism we compute, at the quantum level, the explicit form of the compound operators involved in the construction of the $b$ ghost, their
Adam   +39 more
core   +1 more source

Unveiling Phonon Contributions to Thermal Conductivity and the Applicability of the Wiedemann—Franz Law in Ruthenium and Tungsten Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Thermal transport in Ru and W thin films is studied using steady‐state thermoreflectance, ultrafast pump–probe spectroscopy, infrared‐visible spectroscopy, and computations. Significant Lorenz number deviations reveal strong phonon contributions, reaching 45% in Ru and 62% in W.
Md. Rafiqul Islam   +14 more
wiley   +1 more source

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