Pressure-induced superconductivity in ferromagnet UIr without inversion symmetry

Kobayashi, Tatsuo; Fukushima, Satoshi; Hidaka, Hisao; Kotegawa, Hisashi; Akazawa, Teruhiko; Yamamoto, Etsuji; Haga, Yoshinori; Settai, Rikio; Ōnuki, Yoshichika

doi:10.1016/j.physb.2006.01.126

Cited by 36 publications

(34 citation statements)

References 12 publications

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“…Examples include some heavy fermion superconductors [24][25][26][27][28][29][30][31][32] , Ruthenatelayered cuprates [33][34][35][36][37][38] , Eu(Fe 1−y Co y ) 2 (As 1−x P x ) 2 39-44 , and CeFe(As 1−y P y )(O 1−x F x ) [45][46][47][48] . Layered superconductors are typically composed of alternating superconducting and blocking layers 1,2,49,50 .…”

Section: 267mentioning

confidence: 99%

Coexistence of ferromagnetism and superconductivity inCeO0.3F0.7BiS2

et al. 2014

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Bulk magnetization, transport and neutron scattering measurements were performed to investigate the electronic and magnetic properties of a polycrystalline sample of the newly discovered ferromagnetic superconductor, CeO0.3F0.7BiS2. Ferromagnetism develops below TF M = 6.54(8) K and superconductivity is found to coexist with the ferromagnetic state below TSC ∼ 4.5 K. Inelastic neutron scattering measurements reveal a very weakly dispersive magnetic excitation at 1.8 meV that can be explained by an Ising-like spin Hamiltonian. Under application of an external magnetic field, the direction of the magnetic moment changes from the c-axis to the ab-plane and the 1.8 meV excitation splits into two modes. A possible mechanism for the unusual magnetism and its relation to superconductivity is discussed.

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Section: 267mentioning

confidence: 99%

Coexistence of ferromagnetism and superconductivity inCeO0.3F0.7BiS2

et al. 2014

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“…Superconductivity with a maximum temperature T c ∼ 0.14 K appears in a very narrow dome localized around P C3 [208]. The superconductivity has been observed by zero electrical resistance and by a drop in the ac magnetic susceptibility [226,228]; however, thermodynamic signatures of the superconducting transition (via, e.g., ac calorimetry) have not, to our knowledge, been reported. An interesting feature of UIr is that the crystal structure is non-centrosymmetric.…”

Section: Ferromagnetic Superconductorsmentioning

confidence: 90%

Non-Fermi Liquid Regimes and Superconductivity in the Low Temperature Phase Diagrams of Strongly Correlated d- and f-Electron Materials

et al. 2010

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Standard models for simple metals and insulators often fail for systems based on elements with unstable d-or f -electron shells, where strong electronic correlations can generate new and unexpected states of matter. Such a scenario can often be induced when a magnetic phase transition is tuned to absolute zero temperature by an external control parameter such as chemical composition, pressure or magnetic field. At the resulting quantum critical point (QCP), emergent phenomena, such as unconventional superconductivity and novel magnetic phases are frequently observed. The temperature and energy dependences of the physical properties are also found to deviate from expectations for a simple Fermi liquid. This "non-Fermi-liquid" (NFL) behavior is commonly manifested as weak power laws and logarithmic divergences in the physical properties at low temperatures and is often found in a V-shaped region near a QCP, which has become the "classic" QCP phase diagram. However, there is also a growing number of materials where the NFL behavior either occurs far away from the QCP, within an ordered phase, or may not be associated with any putative QCP. Thus, after nearly 20 years of research, it remains unknown whether NFL physics is universal, or if a multitude of unique subclasses exist. In this article, we review research that has primarily been carried out in our laboratory on systems that exhibit NFL behavior that does not conform to the "classic" QCP scenario.

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“…The coexistence of superconductivity and ferromagnetism as a result of collective behavior of f -band electrons has been found experimentally for some Uranium-based intermetallic compounds as, UGe 2 [2][3][4][5], URhGe [6][7][8], UCoGe [9,10], and UIr [11,12]. At low temperature (T ∼ 1K ) all these compounds exhibit thermodynamically stable phase of coexistence of spin-triplet superconductivity and itinerant ( f -band) electron ferromagnetism (in short, FS phase).…”

Section: Introductionmentioning

confidence: 94%

“…(11) and (12). The upper sign describes the domain (labelled bellow again by FS), where m > 0, sinθ = −1, whereas the lower sign describes the conjunct domain FS * ,w h e r em < 0a n ds i n θ = 1 (for details, see, Ref.…”

Section: Stable Phasesmentioning

confidence: 99%

“…Like in UGe 2 , the FS phase in UIr [12] is embedded in the high-pressure/low-temperature part of the ferromagnetic phase domain near the critical pressure P c which means that UIr is certainly a U-type compound. In UGe 2 there is one metamagnetic phase transition between two ferromagnetic phases (FM1 and FM2), in UIr there are three ferromagnetic phases and the FS phase is located in the low-T/high-P domain of the third of them -the phase FM3.…”

Section: Other Compoundsmentioning

confidence: 99%

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