Results 91 to 100 of about 855,885 (336)

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Near-field radiative thermal transport: From theory to experiment

AIP Advances, 2015
Radiative thermal transport via the fluctuating electromagnetic near-field has recently attracted increasing attention due to its fundamental importance and its impact on a range of applications from data storage to thermal management and energy ...
Bai Song, Anthony Fiorino, Edgar Meyhofer, Pramod Reddy   +3 more
doaj   +1 more source

Scalar and fermionic Unruh Otto engines

Journal of High Energy Physics, 2018
We investigate the behaviour of quantum heat engines, in which a qubit is put through the quantum equivalent of the Otto cycle and the heat reservoirs are due to the Unruh effect.
Finnian Gray, Robert B. Mann
doaj   +1 more source

Euclidean thermal spinor Green's function in the spacetime of a straight cosmic string

, 1995
Within the framework of the quantum field theory at finite temperature on a conical space, we determine the Euclidean thermal spinor Green's function for a massless spinor field.
B Linet, Davies P C W, De Sousa Gerbert P, Guimarães M E X, Guimarães M E X, Linet B, Smith A G, Vilenkin A   +7 more
core   +1 more source

Support of dS/CFT correspondence from perturbations of three dimensional spacetime [PDF]

, 2002
We discuss the relation between bulk de Sitter three-dimensional spacetime and the corresponding conformal field theory at the boundary, in the framework of the exact quasinormal mode spectrum.
A. Lima-Santos, Abdalla, Aharony, Banados, Batchelot, Bin Wang, Birmingham, Birmingham, Brady, Brady, Brown, Cardoso, Carlip, Chan, Chan, Choptuik, Elcio Abdalla, Gundlach, Horowitz, Horowitz, Klemm, Kokkotas, Maldacena, Park, Price, Price, Strominger, W.G. Qiu, Wang, Wang, Wang, Zhu   +31 more
core   +2 more sources

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

Advanced 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, Yao Zhang, Xiaowei Sheng, Xiuxian Yang, Gang Zhang, Junfeng Gao, Xiaotian Wang   +6 more
wiley   +1 more source

The Unruh quantum Otto engine

Journal of High Energy Physics, 2018
We introduce a quantum heat engine performing an Otto cycle by using the thermal properties of the quantum vacuum. Since Hawking and Unruh, it has been established that the vacuum space, either near a black hole or for an accelerated observer, behaves as
Enrique Arias, Thiago R. de Oliveira, M. S. Sarandy   +2 more
doaj   +1 more source

Finite temperature negativity Hamiltonians of the massless Dirac fermion

Journal of High Energy Physics, 2023
The negativity Hamiltonian, defined as the logarithm of a partially transposed density matrix, provides an operatorial characterisation of mixed-state entanglement.
Federico Rottoli, Sara Murciano, Pasquale Calabrese   +2 more
doaj   +1 more source

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

Advanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang, Mingzi Sun, Feng Lang, Zhijun Cai, Xitao Hu, Yao Gao, Chao Lin, Xueqiang Zhang, Bolong Huang, Quan Li   +9 more
wiley   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source