The Experts below are selected from a list of 185337 Experts worldwide ranked by ideXlab platform
S Feliu - One of the best experts on this subject based on the ideXlab platform.
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modelling of the steel Concrete interface to obtain information on reinforcement bar corrosion
Journal of Applied Electrochemistry, 2005Co-Authors: V Feliu, Jose Gonzalez, S FeliuAbstract:The selection of an equivalent circuit that faithfully models the steel–Concrete interface response to the application of electrical signals is a fundamental aspect of the electrochemical determination of reinforcement corrosion rate. Experimental evidence is provided in favour of using a modified Randles circuit in which the corroding interface is characterised by a parallel combination of a constant phase element and a charge transfer resistance in series with a Warburg element. An advantage of having an appropriate model of the steel–Concrete System is the possibility of carrying out studies of quality of the information that is extracted from the experimental data. A sensitivity-algorithm is applied with the object of identification of the conditions in which the System’s response is dominated by certain parameters or combinations of them.
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equivalent circuit for modelling the steel Concrete interface i experimental evidence and theoretical predictions
Corrosion Science, 1998Co-Authors: V Feliu, Jose Gonzalez, C Andrade, S FeliuAbstract:This paper experimentally confirms the participation of diffusion in the response of reinforced Concrete specimens to the different electrical signals applied. Therefore, in the modelling of the steel-Concrete System, it seems necessary to incorporate elements representing the diffusion together with the effects of the corrosion reaction and the non-ideal capacitative behaviour at the interface. A knowledge of the interaction between all these phenomena is indispensable for interpreting the response of the System to the application of DC and AC signals, and for the correct estimation of the corrosion rate of reinforcements. An examination is made of which equivalent circuit might be most suitable for modelling the System.
V Feliu - One of the best experts on this subject based on the ideXlab platform.
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modelling of the steel Concrete interface to obtain information on reinforcement bar corrosion
Journal of Applied Electrochemistry, 2005Co-Authors: V Feliu, Jose Gonzalez, S FeliuAbstract:The selection of an equivalent circuit that faithfully models the steel–Concrete interface response to the application of electrical signals is a fundamental aspect of the electrochemical determination of reinforcement corrosion rate. Experimental evidence is provided in favour of using a modified Randles circuit in which the corroding interface is characterised by a parallel combination of a constant phase element and a charge transfer resistance in series with a Warburg element. An advantage of having an appropriate model of the steel–Concrete System is the possibility of carrying out studies of quality of the information that is extracted from the experimental data. A sensitivity-algorithm is applied with the object of identification of the conditions in which the System’s response is dominated by certain parameters or combinations of them.
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equivalent circuit for modelling the steel Concrete interface i experimental evidence and theoretical predictions
Corrosion Science, 1998Co-Authors: V Feliu, Jose Gonzalez, C Andrade, S FeliuAbstract:This paper experimentally confirms the participation of diffusion in the response of reinforced Concrete specimens to the different electrical signals applied. Therefore, in the modelling of the steel-Concrete System, it seems necessary to incorporate elements representing the diffusion together with the effects of the corrosion reaction and the non-ideal capacitative behaviour at the interface. A knowledge of the interaction between all these phenomena is indispensable for interpreting the response of the System to the application of DC and AC signals, and for the correct estimation of the corrosion rate of reinforcements. An examination is made of which equivalent circuit might be most suitable for modelling the System.
Gogoi Papori - One of the best experts on this subject based on the ideXlab platform.
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From confined spinons to emergent fermions: Observation of elementary magnetic excitations in a transverse-field Ising chain
'American Physical Society (APS)', 2016Co-Authors: Wang Zhe, Wu Jianda, Xu Shenglong, Yang Wang, Wu Congjun, Bera, Anup Kumar, Islam A. T. M. Nazmul, Lake Bella, Kamenskyi Dmytro, Gogoi PaporiAbstract:We report on spectroscopy study of elementary magnetic excitations in an Ising-like antiferromagnetic chain compound SrCo$_2$V$_2$O$_8$ as a function of temperature and applied transverse magnetic field up to 25 T. An optical as well as an acoustic branch of confined spinons, the elementary excitations at zero field, are identified in the antiferromagnetic phase below the N\'{e}el temperature of 5 K and described by a one-dimensional Schr\"{o}dinger equation. The confinement can be suppressed by an applied transverse field and a quantum disordered phase is induced at 7 T. In this disordered paramagnetic phase, we observe three emergent fermionic excitations with different transverse-field dependencies. The nature of these modes is clarified by studying spin dynamic structure factor of a 1D transverse-field Heisenberg-Ising (XXZ) model using the method of infinite time evolving block decimation. Our work reveals emergent quantum phenomena and provides a Concrete System for testifying theoretical predications of one-dimension quantum spin models.Comment: 8 pages and 6 figure
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From confined spinons to emergent fermions: Observation of elementary magnetic excitations in a transverse-field Ising chain
PHYSICAL REVIEW B, 2016Co-Authors: Wang Zhe, Wu Jianda, Xu Shenglong, Yang Wang, Wu Congjun, Bera, Anup Kumar, Islam A. T. M. Nazmul, Lake Bella, Kamenskyi Dmytro, Gogoi PaporiAbstract:We report on spectroscopy study of elementary magnetic excitations in an Ising-like antiferromagnetic chain compound SrCo2V2O8 as a function of temperature and applied transverse magnetic field up to 25 T. An optical as well as an acoustic branch of confined spinons, the elementary excitations at zero field, are identified in the antiferromagnetic phase below the Neel temperature of 5 K and described by a one-dimensional Schrodinger equation. The confinement can be suppressed by an applied transverse field and a quantum disordered phase is induced at 7 T. In this disordered paramagnetic phase, we observe three emergent fermionic excitations with different transverse-field dependencies. The nature of these modes is clarified by studying spin dynamic structure factor of a 1D transverse-field Heisenberg-Ising (XXZ) model using the method of infinite time evolving block decimation. Our work reveals emergent quantum phenomena and provides a Concrete System for testifying theoretical predications of one-dimension quantum spin models.Deutsche Forschungsgemeinschaft via the Transregional Research Collaboration: From Electronic Correlations to Functionality (Augsburg - Munich - Stuttgart) [TRR 80]; Chinesisch-Deutsches Zentrum fur Wissenschaftsforderung; HFML-RU/FOM; NSF [DMR-1410375]; AFOSR [FA9550-14-1-0168]; University of California Office of the President [CA-15-327861]; National Natural Science Foundation of China [11328403]; CAS/SAFEA International Partnership Program for Creative Research Teams of ChinaSCI(E)ARTICLEzhe.wang@physik.uni-augsburg.de; jdwu@physics.ucsd.edu129
N L Wang - One of the best experts on this subject based on the ideXlab platform.
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from confined spinons to emergent fermions observation of elementary magnetic excitations in a transverse field ising chain
Physical Review B, 2016Co-Authors: Zhe Wang, Wang Yang, A K Bera, A Nazmul T M Islam, B Lake, D Kamenskyi, Papori Gogoi, H Engelkamp, N L WangAbstract:We report on spectroscopy study of elementary magnetic excitations in an Ising-like antiferromagnetic chain compound ${\mathrm{SrCo}}_{2}{\mathrm{V}}_{2}{\mathrm{O}}_{8}$ as a function of temperature and applied transverse magnetic field up to 25 T. An optical as well as an acoustic branch of confined spinons, the elementary excitations at zero field, are identified in the antiferromagnetic phase below the N\'eel temperature of 5 K and described by a one-dimensional Schr\"odinger equation. The confinement can be suppressed by an applied transverse field and a quantum disordered phase is induced at 7 T. In this disordered paramagnetic phase, we observe three emergent fermionic excitations with different transverse-field dependencies. The nature of these modes is clarified by studying spin dynamic structure factor of a 1D transverse-field Heisenberg-Ising $(XXZ)$ model using the method of infinite time evolving block decimation. Our work reveals emergent quantum phenomena and provides a Concrete System for testifying theoretical predications of one-dimension quantum spin models.
B Lake - One of the best experts on this subject based on the ideXlab platform.
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from confined spinons to emergent fermions observation of elementary magnetic excitations in a transverse field ising chain
Physical Review B, 2016Co-Authors: Zhe Wang, Wang Yang, A K Bera, A Nazmul T M Islam, B Lake, D Kamenskyi, Papori Gogoi, H Engelkamp, N L WangAbstract:We report on spectroscopy study of elementary magnetic excitations in an Ising-like antiferromagnetic chain compound ${\mathrm{SrCo}}_{2}{\mathrm{V}}_{2}{\mathrm{O}}_{8}$ as a function of temperature and applied transverse magnetic field up to 25 T. An optical as well as an acoustic branch of confined spinons, the elementary excitations at zero field, are identified in the antiferromagnetic phase below the N\'eel temperature of 5 K and described by a one-dimensional Schr\"odinger equation. The confinement can be suppressed by an applied transverse field and a quantum disordered phase is induced at 7 T. In this disordered paramagnetic phase, we observe three emergent fermionic excitations with different transverse-field dependencies. The nature of these modes is clarified by studying spin dynamic structure factor of a 1D transverse-field Heisenberg-Ising $(XXZ)$ model using the method of infinite time evolving block decimation. Our work reveals emergent quantum phenomena and provides a Concrete System for testifying theoretical predications of one-dimension quantum spin models.