Strongly Correlated Electron Systems in Uranium-based Compounds PDF Download
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Author: Noravee Kanchanavatee
Publisher:
ISBN: 9781267413369
Category :
Languages : en
Pages : 94
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Book Description
The properties of UCoGe and URu2Si2 have been investigated by substitution of Ni into the Co site and Fe and Os into the Ru site. Polycrystalline samples of UCo1xNixGe (0
Author: Noravee Kanchanavatee
Publisher:
ISBN: 9781267413369
Category :
Languages : en
Pages : 94
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Book Description
The properties of UCoGe and URu2Si2 have been investigated by substitution of Ni into the Co site and Fe and Os into the Ru site. Polycrystalline samples of UCo1xNixGe (0
Author: Yuen Yiu
Publisher:
ISBN:
Category : Condensed matter
Languages : en
Pages : 153
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Book Description
The world presents many natural and man-made crises and challenges that require scientific solutions. Condensed matter physics is one of the most influential and solution oriented disciplines in science. The field saw a significant rise in popularity especially during the past century as mankind enters the Information Age, when energy and computing related technologies become ubiquitous. This technological progress has been driven by efforts from scientists and engineers, through the synthesis, understanding, and implementation of new materials. Condensed matter physicists strive to solve puzzles at the frontier of material research. In the 21st century we have many advance tools at our disposal to help evaluate and solve these puzzles. For this thesis we focus on the forefront techniques of neutron scattering, along with other experimental methods to explore three frontier problems in condensed matter physics. The first problem is the investigation of phase transitions in Ru/Fe [Ruthenium/Iron] substituted PrFeAsO [Praseodymium Iron Arsenic Oxide]. PrFeAsO belongs to the 1111 family of iron pnictides, in which superconductivity can usually be induced by suppressing the magnetic and structural transitions via carrier doping. We have used neutron powder diffraction to investigate the effect of isoelectronic substitution on these transitions in PrFeAsO. Second is the study of the helimagnetic ordering in Cr [Chromium] doped FeGe [Iron Germanide]. Both CrGe [Chromium Germanide] and FeGe are in the B20 cubic structure, where CrGe exhibits no long range magnetic order down to at least 2 K, FeGe orders helimagnetically at 280 K with a periodicity of 700 Angstroms. We use small angle neutron scattering to study the Cr doping dependence of helimagnetism in FeGe. Finally, we examine the lattice dynamics in rocksalt structure compounds UC [Uranium Carbide] and US [Uranium Sulfide]. A recent inelastic neutron scattering experiment revealed quantum harmonic oscillator behavior of N [Nitrogen] atoms in UN [Uranium Nitride]. We deduce that other uranium rocksalts should also exhibit such behaviors. We use inelastic neutron scattering to extend the study on quantum harmonic oscillations in uranium rock salts.
Author: Serdar Sakarya
Publisher: IOS Press
ISBN: 9781586037192
Category : Science
Languages : en
Pages : 202
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Book Description
Ferromagnetism and superconductivity have long been thought to be mutually exclusive. This book investigates the magnetic correlations of the ferromagnetic superconductors in order to better understand the unusual coexistence of ferromagnetism and superconductivity.
Author: Eric Dietzgen Bauer
Publisher:
ISBN:
Category :
Languages : en
Pages : 288
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Author:
Publisher: Publication Office Japanese Journal of Applied Physics
ISBN:
Category : Antiferromagnetism
Languages : en
Pages : 298
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Author: Robert P. Guertin
Publisher:
ISBN:
Category : Antiferromagnetism
Languages : en
Pages : 722
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Author: Baskaran G
Publisher: World Scientific
ISBN: 9814513318
Category :
Languages : en
Pages : 506
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Author: Ryuji Okazaki
Publisher: Springer Science & Business Media
ISBN: 4431545921
Category : Technology & Engineering
Languages : en
Pages : 114
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Book Description
In this thesis, the author investigates hidden-order phase transition at T0 = 17.5 K in the heavy-fermion URu2Si2. The four-fold rotational symmetry breaking in the hidden order phase, which imposes a strong constraint on the theoretical model, is observed through the magnetic torque measurement. The translationally invariant phase with broken rotational symmetry is interpreted as meaning that the hidden-order phase is an electronic “nematic” phase. The observation of such nematicity in URu2Si2 indicates a ubiquitous nature among the strongly correlated electron systems. The author also studies the superconducting state of URu2Si2 below Tc = 1.4 K, which coexists with the hidden-order phase. A peculiar vortex penetration in the superconducting state is found, which may be related to the rotational symmetry breaking in the hidden-order phase. The author also identifies a vortex lattice melting transition. This transport study provides essential clues to the underlying issue of quasiparticle dynamics as to whether a quasiparticle Bloch state is realized in the periodic vortex lattice.
Author: A. Gonis
Publisher: Springer Science & Business Media
ISBN: 1461547156
Category : Technology & Engineering
Languages : en
Pages : 545
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Book Description
This volume, the proceedings of a 1998 international workshop, provides experimental evidence of the effects of correlation on the physical, chemical, and mechanical properties of materials, as well as the theoretical/computational methodology that has been developed for their study.
Author: Maxim Yu. Kagan
Publisher: Springer Nature
ISBN: 3031554671
Category :
Languages : en
Pages : 385
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Book Description
