Magnetic and transport properties of single-grain<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>R</mml:mi><mml:mo>−</mml:mo><mml:mi mathvariant="normal">M</mml:mi><mml:mi mathvariant="normal">g</mml:mi><mml:mo>−</mml:mo><mml:mi mathvariant="normal">Z</mml:mi><mml:mi mathvariant="normal">n</mml:mi></mml:math>icosahedral quasicrystals [<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>R</mml:mi><mml:mo>=</mml:mo><mml:mi mathvariant="normal">Y

Fisher, I. R.; Cheon, K. O.; Panchula, Alex; Canfield, Paul C.; Черников, М. А.; Ott, H. R.; Dennis, K. W.

doi:10.1103/physrevb.59.308

Cited by 116 publications

(98 citation statements)

References 26 publications

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“…7,8 In Zn-Mg-R and CdMg-R, dc-and ac-susceptibility measurements demonstrate canonical spin-glass behavior. 9,10 Neutron diffraction measurements clearly show the presence of short-range magnetic correlations (diffuse scattering) with overall icosahedral symmetry at low temperature that has been interpreted in terms of strong correlations between moments on individual clusters. 8 Correlations between moments on adjacent spin clusters appear to be absent.…”

mentioning

confidence: 99%

Antiferromagnetic order in the quasicrystal approximant Cd6Tb studied by x-ray resonant magnetic scattering

et al. 2012

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We have used x-ray resonant magnetic scattering at the Tb L2 edge to elucidate the nature of magnetic ordering in Cd6Tb, a 1/1 approximant closely related to the R-Mg-Cd (R = rare earth) icosahedral alloys. Below TN ≈ 24 K, the ordered moments associated with the icosahedral clusters at the corner and body-center of the pseudo-cubic unit cell are antiferromagnetically correlated and long-range magnetic order is realized.

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confidence: 99%

Antiferromagnetic order in the quasicrystal approximant Cd6Tb studied by x-ray resonant magnetic scattering

et al. 2012

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“…[11][12][13][14][15][16][17] Most magnetic quasicrystals studied to date are ternary compounds, such as i-R-Mg-Zn, 9,18,19 i-R-Mg-Cd, 9,20 and i-R-Ag-In 21,22 (R = rare earth), where chemical disorder in the local environment of the magnetic R-ion is a complicating factor.…”

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confidence: 99%

Atomic structure of the i-R-Cd quasicrystals and consequences for magnetism

et al. 2016

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“…Some examples of single grain QCs presenting macroscopically pentagonal faceting, or perfect bulk icosahedral aspect has been obtained by Fisher et al [1,2]. Electronic transport properties studied in QCs show quite different behavior in comparison to the crystalline counterpart.…”

Section: Introductionmentioning

confidence: 99%

“…High purity single grain QC specimens obtained in different laboratories [1][2][3][4] have shown many of the intrinsic electronic properties related to electronic transport, thermal, and pseudogap characteristics [5][6][7][8][9][10]. Some examples of single grain QCs presenting macroscopically pentagonal faceting, or perfect bulk icosahedral aspect has been obtained by Fisher et al [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…In crystalline intermetallic alloys, the electronic states are extended at both sides of the Fermi energy. Experimental measurements performed on pure and single domain QC structures, show that the ratio between electrical resistances from low to high temperature increases with purity and perfection of the QC [1][2][3][4]7]. Additionally, related to the pseudogap feature, it is important to mention that this characteristic at the Fermi level exist for both crystalline and quasicrystalline alloys, involving a Hume-Rothery stabilization mechanism, it is one of the reasons of the high thermodynamic stability for icosahedral QCs and also in crystalline intermetallic alloys.…”

Section: Introductionmentioning

confidence: 99%

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Point contact tunneling spectroscopy of the density of states in Tb–Mg–Zn quasicrystals

Escudero

Morales

2016

Journal of Non-Crystalline Solids

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According to theoretical predictions the quasicrystalline (QC) electronic density of states (DOS) must have a rich and fine spiky structure which actually has resulted elusive. The problem with its absence may be related to poor structural characteristics of the studied specimens, and/or to the non-existence of this spike characteristic. Recent calculations have shown that the fine structure indeed exists, but only for two dimensional approximants phases. The aim of the present study is to show our recent experimental studies with point contacts tunnel junction spectroscopy performed in samples of very high quality. The studies were performed in icosahedral QC alloys with composition Tb 9 Mg 35 Zn 56 . We found the presence of a pseudogap feature at the Fermi level, small as compared to the pseudogap of other icosahedral materials. This study made in different spots on the QC shows quite different spectroscopic features, where the observed DOS was a fine non-spiky structure, distinct to theoretical predictions. In some regions of the specimens the spectroscopic features could be related to Kondo characteristics due to Tb magnetic atoms acting as impurities. Additionally, we observed that the spectroscopic features vanished under magnetic field.

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Magnetic and transport properties of single-grainR−Mg−Znicosahedral quasicrystals [R=Y

Cited by 116 publications

References 26 publications

Antiferromagnetic order in the quasicrystal approximant Cd6Tb studied by x-ray resonant magnetic scattering

Antiferromagnetic order in the quasicrystal approximant Cd6Tb studied by x-ray resonant magnetic scattering

Atomic structure of the i-R-Cd quasicrystals and consequences for magnetism

Point contact tunneling spectroscopy of the density of states in Tb–Mg–Zn quasicrystals

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