Intermediate valence in single crystals of (Lu1−xY bx)3Rh4Ge13 (0 ≤ x ≤ 1)

Binod, K.; Morosan, Emilia

doi:10.1063/1.4913742

Cited by 10 publications

(5 citation statements)

References 42 publications

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“…This also agrees with the result deduced for the valence band. The presented Yb 4d spectrum can also be compared with the results for Yb metal [56] and other Yb compounds [22,57,58]. This comparison confirms the nature of the spectrum similar to the trivalent state of Yb with a smaller divalent contribution.…”

Section: Core Level Spectra Yb 4d Fe 2p and Al 2psupporting

confidence: 68%

“…For mixed-valence compound YbInCu 4 [22], it has been observed that the intensity of the 4d 5/2 divalent peak around 182 eV strongly decreases with decreasing temperature, which was associated with an increase in valence. Whereas for the mixed-valence alloy (Lu 1−x Yb x ) 3 Rh 4 Ge 13 [58] it has been shown that the peak associated with the Yb 3+ state located around 185 eV increases significantly with increasing Yb concentration.…”

Section: Core Level Spectra Yb 4d Fe 2p and Al 2pmentioning

confidence: 99%

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Electronic structure of YbFe$_4$Al$_8$ antiferromagnet: A combined X-ray photoelectron spectroscopy and first-principles study

Marciniak¹,

Chełkowska²,

Bajorek³

et al. 2021

Preprint

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Depending on their chemical composition, Yb compounds often exhibit different valence states.Here we investigate the valence state of YbFe 4 Al 8 using X-ray photoelectron spectroscopy (XPS) and first-principles calculations. The XPS valence band of YbFe 4 Al 8 consists of two contributions coming from divalent (Yb 2+ ) and trivalent (Yb 3+ ) configurations. The determined value of the valence at room temperature is 2.81. Divalent and trivalent contributions are also observed for core-level Yb 4d XPS spectra. We study several collinear antiferromagnetic models of YbFe 4 Al 8 from the first-principles and for comparison we also consider LuFe 4 Al 8 with a fully filled 4f shell. We predict that only Fe sublattices of YbFe 4 Al 8 carry significant magnetic moments and that the most stable magnetic configuration is AFM-C with antiparallel columns of magnetic moments. We also present a Mullliken electronic population analysis describing charge transfer both within and between atoms. In addition, we also study the effect of intra-atomic Coulomb U repulsion term applied for 4f orbitals on Yb valence and Fe magnetic moments.

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Section: Core Level Spectra Yb 4d Fe 2p and Al 2psupporting

confidence: 68%

Section: Core Level Spectra Yb 4d Fe 2p and Al 2pmentioning

confidence: 99%

Electronic structure of YbFe$_4$Al$_8$ antiferromagnet: A combined X-ray photoelectron spectroscopy and first-principles study

Marciniak¹,

Chełkowska²,

Bajorek³

et al. 2021

Preprint

View full text Add to dashboard Cite

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“…There are a few examples of compositions with different structures, such as tetragonal Yb 3 Pt 4 Ge 13 3 , monoclinic Y 3 Pt 4 Ge 13 4 and U 3 Ir 4 Ge 13 , which has a noncentrosymmetric rhombohedral structure 5 . The R 3 T 4 M 13 compounds have attracted considerable interest since they display a wide range of physical properties, such as superconductivity, 1,4,[6][7][8][9][10][11][12][13][14] magnetism, 5,[15][16][17][18] mixed valence behavior, 14,[19][20][21] structural phase transitions and quantum criticality. 22,23 Particular attention has been paid to the stannides R 3 T 4 Sn 13 .…”

Section: Introductionmentioning

confidence: 99%

Nodeless superconductivity and the peak effect in the quasiskutterudites Lu3Os4Ge13 and Y3Ru<

et al. 2017

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We report an investigation of the superconducting states of Lu 3 Os 4 Ge 13 and Y 3 Ru 4 Ge 13 single crystals by measurements of the electrical resistivity, ac susceptibility and London penetration depth. The analysis of the penetration depth and the derived superfluid density indicates the presence of nodeless superconductivity and suggest that there are multiple superconducting gaps in both materials. Furthermore, ac susceptibility measurements of both compounds display the peak effect in the low temperature region of the H − T phase diagram. This anomalous increase of the critical current with field gives an indication of a change of the arrangement of flux lines in the mixed state, as found in some of the isostructural stannide materials.

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“…The LaRuSn 3 -type structure has the space group Pm 3n, which is very similar to Yb 3 Rh 4 Sn 13 [50][51][52]. Compounds in the Yb 3 Rh 4 Sn 13 -type structure have been reported to exhibit interesting properties such as superconductivity, heavyfermion behavior, complex magnetism, low-carrier density, and valence fluctuating behavior [50,[163][164][165][166][167]. A small number of RTX 3 compounds crystallize in the LaRuSn 3 -type structure; however, a wide range of magnetic properties is reported, such as long-range magnetic order, paramagnetism, valence fluctuations, and spin glass-like behavior.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Review on crystal structures and magnetic properties of RTX ₃ materials

Binod¹,

O'Rourke²,

Roy³

2022

J. Phys.: Condens. Matter

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The structural and compositional diversity of the RTX 3 family of materials offers various magnetic and thermodynamic properties such as complex magnetic structure, vibronic bound states, heavy-fermions, valence fluctuations, metamagnetism, spin glass behavior, quantum criticality, and unconventional superconductivity. Here we present an overview of the crystal structures, crystal growth and magnetic properties of RTX 3 compounds as well as a discussion of the relevant physics. The magnetic properties of several compounds of the RTX 3 family still remain unexplored. The compounds with a complex magnetic structure could potentially host exotic topological phases. This review article may help in the exploration of exotic magnetic properties such as the vibron state and topological spin textures.

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Intermediate valence in single crystals of (Lu_1−xY b_x)₃Rh₄Ge₁₃ (0 ≤ x ≤ 1)

Cited by 10 publications

References 42 publications

Electronic structure of YbFe$_4$Al$_8$ antiferromagnet: A combined X-ray photoelectron spectroscopy and first-principles study

Electronic structure of YbFe$_4$Al$_8$ antiferromagnet: A combined X-ray photoelectron spectroscopy and first-principles study

Nodeless superconductivity and the peak effect in the quasiskutterudites Lu3Os4Ge13 and Y3Ru<

Review on crystal structures and magnetic properties of RTX ₃ materials

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Intermediate valence in single crystals of (Lu1−xY bx)3Rh4Ge13 (0 ≤ x ≤ 1)

Cited by 10 publications

References 42 publications

Electronic structure of YbFe$_4$Al$_8$ antiferromagnet: A combined X-ray photoelectron spectroscopy and first-principles study

Electronic structure of YbFe$_4$Al$_8$ antiferromagnet: A combined X-ray photoelectron spectroscopy and first-principles study

Nodeless superconductivity and the peak effect in the quasiskutterudites Lu3Os4Ge13 and Y3Ru<

Review on crystal structures and magnetic properties of RTX 3 materials

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Product

Resources

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Intermediate valence in single crystals of (Lu_1−xY b_x)₃Rh₄Ge₁₃ (0 ≤ x ≤ 1)

Review on crystal structures and magnetic properties of RTX ₃ materials