Local suppression of the hidden-order phase by impurities in URu<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Si<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Pezzoli, M.; Graf, Matthias J.; Haule, Kristjan; Kotliar, Gabriel; Balatsky, Alexander V.

doi:10.1103/physrevb.83.235106

Cited by 12 publications

(8 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 12 also compares the H − T phase diagram for U(Ru 0.96 Rh 0.04 ) 2 Si 2 with that of undoped URu 2 Si 2 . Recently a theoretical description of the suppression of HO by Rh impurities was presented by Pezzoli et al (2011). They studied the local competition of HO-Ψ with LMAFm where disorder is the driving force of the two competing effects.…”

Section: High Magnetic Fields and Rh-dopingmentioning

confidence: 99%

Colloquium: Hidden order, superconductivity, and magnetism: The unsolved case ofURu2Si2

2011

View full text Add to dashboard Cite

This Colloquium reviews the 25 year quest for understanding the continuous (2 nd ) order, meanfield-like phase transition occurring at 17.5 K in URu 2 Si 2 . Since ca. ten years the term hidden order (HO) has been coined and utilized to describe the unknown ordered state, whose origin cannot be disclosed by conventional solid-state probes, such as x-rays, neutrons, or muons. HO is able to support superconductivity at lower temperatures (Tc ≈ 1.5 K) and when magnetism is developed with increasing pressure both the HO and the superconductivity are destroyed. Other ways of probing the HO are via Rh-doping and very large magnetic fields. During the last few years a variety of advanced techniques have been tested to probe the HO state and their attempts will be summarized. A digest of recent theoretical developments is also included. It is the objective of this survey to shed additional light on the HO state and its associated phases in other materials. VII. Present State of HO 12Acknowledgments 16 References 17Figures 21 I. HISTORICAL BACKGROUNDUranium is a most intriguing element, not only in itself but also as a basis for forming a variety of compounds and alloys with unconventional or puzzling physics properties (for recent reviews, see Sechovský and Havela (1998), Santini et al. (1999), Stewart (2006)). Natural or depleted uranium, i.e. containing 99.5 percent 238 U has a * Electronic address: mydosh@physics.leidenuniv.nl † Electronic address: peter.oppeneer@physics.uu.se mild alpha radioactivity of 25 kBq/g, which allows Ubased samples to be fabricated and studied in university laboratories with a minimum of safety precautions. Following initial discoveries of unexpected superconductivity and heavy-fermion behavior in uranium-based compounds as UBe 13 (Ott et al., 1983) and UPt 3 (Stewart et al., 1984) it has become popular to synthesize uranium compounds and to cool these in search for exotic ground states. Over the past 50 or so years many conducting and insulating systems were synthesized, analyzed and structurally characterized (Sechovský and Havela, 1998;Stewart, 2001Stewart, , 2006. The usual classification of the metallic samples at low temperature is superconducting and/or magnetic or with some of the modern compounds designated as "exotic" (Pfleiderer, 2009).Why are uranium-based materials so interesting? The observed variety of unusual behaviors derive directly from the U open 5f shell. Several defining electronic structure quantities of the U f electrons are all on the same energy scale: the exchange interaction, 5f bandwidth, the spin-orbit interaction, and intra-atomic f − f Coulomb interaction. As a consequence, i) elemental uranium displays intermediate behavior between the transition metals and the rare-earths in their characteristic bandwidths, yet it generates the largest spin-orbit coupling. ii) U lies directly on the border between localized and itinerant (or overlapping) 5f wavefunctions. iii) The WignerSeitz radii R WS of comparative elements places U near the minimum between metallic and...

show abstract

Section: High Magnetic Fields and Rh-dopingmentioning

confidence: 99%

Colloquium: Hidden order, superconductivity, and magnetism: The unsolved case ofURu2Si2

2011

View full text Add to dashboard Cite

show abstract

“…) , [33] where k characterizes the pinning strength (encoding the number of pinning sites and the energy cost of overcoming a single pinning site), α is a constant describing the coupling between octupolar domains, and the sign ± applies respectively for increasing and decreasing magnetic fields. The experimentally relevant octupole moment is then given by mexp = mir + c(m − mir) .…”

Section: Hysteretic Behaviour Of Octupolar Orderingmentioning

confidence: 99%

“…Studying the mysterious ordering patterns of higher order multipoles is also often rendered challenging since they typically coexist with conventional dipolar moments. Examples of such symmetry breaking which are of great interest include spin-nematic order (24) in spin S ≥ 1 quantum magnets, quadrupolar charge order in transition metal oxides, and higher multipolar order in f -electron heavy fermion materials (25) such as URu2Si2 (26)(27)(28)(29)(30)(31)(32)(33)(34)(35) and UBe13 (36)(37)(38). The quest to probe such orders has led to novel experimental techniques, e.g., elastoresistivity (39)(40)(41) to elucidate the quadrupolar order associated with orbital nematicity in the iron pnictides.…”

mentioning

confidence: 99%

Unveiling Hidden Orders: Magnetostriction as a Probe of Multipolar-Ordered States

Patri,

Sakai,

Lee

et al. 2019

Preprint

View full text Add to dashboard Cite

“…For instance, in the single-impurity limit, so-called multipolar Kondo interactions lead to the development of both multi-channel as well as exotic non-Fermi liquid states, where both the conduction electron spin and orbital degrees of freedom become intertwined under scattering events with the moment [42][43][44][45]. In the generalized lattice setting, this Kondo effect competes with RKKY interactions between the moments leading to a rich phase diagram of exotic phenomena including hidden multipolar-ordered phases [46][47][48][49][50][50][51][52][53], emergent non-Fermi liquids [54][55][56], and unconventional superconductivity [57][58][59][60][61] in the neighbourhood of a putative quantum critical point [62,63]. In ferro-quadrupolar PrTi 2 Al 20 , for example, thermodynamic and transport measurements indicate the existence of a broad superconducting dome coexisting with ferro-quadrupolar ordering under hydrostatic pressure [64].…”

Section: Introductionmentioning

confidence: 99%

Unconventional Superconductivity arising from Multipolar Kondo Interactions

Patri

Kim

2022

SciPost Phys.

View full text Add to dashboard Cite

The nature of unconventional superconductivity is intimately linked to the microscopic nature of the pairing interactions. In this work, motivated by cubic heavy fermion compounds with embedded multipolar moments, we theoretically investigate superconducting instabilities instigated by multipolar Kondo interactions. Employing multipolar fluctuations (mediated by RKKY interaction) coupled to conduction electrons via two-channel Kondo and novel multipolar Kondo interactions, we uncover a variety of superconducting states characterized by higher-angular momentum Cooper pairs, J=0,1,2,3. We demonstrate that both odd and even parity pairing functions are possible, regardless of the total angular momentum of the Cooper pairs, which can be traced back to the atypical nature of the multipolar Kondo interaction that intertwines conduction electron spin and orbital degrees of freedom. We determine that different (point-group) irrep classified pairing functions may coexist with each other, with some of them characterized by gapped and point node structures in their corresponding quasiparticle spectra. This work lays the foundation for discovery and classification of superconducting states in rare-earth metallic compounds with multipolar local moments.

show abstract

Local suppression of the hidden-order phase by impurities in URu2Si2

Cited by 12 publications

References 30 publications

Colloquium: Hidden order, superconductivity, and magnetism: The unsolved case ofURu2Si2

Colloquium: Hidden order, superconductivity, and magnetism: The unsolved case ofURu2Si2

Unveiling Hidden Orders: Magnetostriction as a Probe of Multipolar-Ordered States

Unconventional Superconductivity arising from Multipolar Kondo Interactions

Contact Info

Product

Resources

About