Electrical transport properties of semimetallic Gd<i>X</i>single crystals (<i>X</i>=P, As, Sb, and Bi)

Li, D. X.; Haga, Yoshinori; Shida, H.; Suzuki, Takashi; Kwon, Young Sam

doi:10.1103/physrevb.54.10483

Cited by 74 publications

(49 citation statements)

References 25 publications

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“…For GdBi, XMR is observed as shown in Fig. 6(d), reaching values of 17 125% (previous reports of GdSb have reported similar values of 2300% [45]). Whereas for CeSb multiband fitting is complicated by the various fieldinduced transitions, GdBi remains in an antiferromagnetic state (T N = 28 K) up to B = 31 T. In this case multiband fitting indicates a significant enhancement of mobility below T N and nearly compensated state at the lowest T (see the Supplemental Material [26]).…”

Section: (C)supporting

confidence: 69%

Extreme magnetoresistance in magnetic rare-earth monopnictides

Ye¹,

Suzuki²,

Wicker³

et al. 2018

Phys. Rev. B

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The acute sensitivity of the electrical resistance of certain systems to magnetic fields known as extreme magnetoresistance (XMR) has recently been explored in a new materials context with topological semimetals. Exemplified by WTe 2 and rare-earth monopnictide La(Sb,Bi), these systems tend to be nonmagnetic, nearly compensated semimetals and represent a platform for large magnetoresistance driven by intrinsic electronic structure. Here we explore electronic transport in magnetic members of the latter family of semimetals and find that XMR is strongly modulated by magnetic order. In particular, CeSb exhibits XMR in excess of 1.6 × 10 6 % at fields of 9 T whereas the magnetoresistance itself is nonmonotonic across the various magnetic phases and shows a transition from negative magnetoresistance to XMR with fields above magnetic ordering temperature T N . The magnitude of the XMR is larger than in other rare-earth monopnictides including the nonmagnetic members and follows a nonsaturating power law to fields above 30 T. We show that the overall response can be understood as the modulation of conductivity by the Ce orbital state and for intermediate temperatures can be characterized by an effective medium model. Comparison to the orbitally quenched compound GdBi supports the correlation of XMR with the onset of magnetic ordering and compensation and highlights the unique combination of orbital inversion and type-I magnetic ordering in CeSb in determining its large response. These findings suggest a paradigm for magneto-orbital control of XMR and are relevant to the understanding of rare-earth-based correlated topological materials.DOI: 10.1103/PhysRevB.97.081108 Magnetoresistance (MR), i.e., the change in electrical resistance induced by application of a magnetic field, is a well-studied phenomenon in condensed-matter physics with relevance for magnetic sensing technologies and other novel electronic devices. Despite its long history, it continues to drive a rich field of study with new microscopic mechanisms and their material realizations being reported. Examples range from the classical orbital MR in metals induced by the Lorentz force [1] to linear MR in Dirac materials accompanied by quantum Landau-level formation [2]. Magnetic materials in particular host diverse MR behavior including giant magnetoresistance in magnetic multilayers [3] and colossal magnetoresistance (CMR) in oxides [4,5]. The magnitude and controllability of such effects have enabled their significant technological impact.Towards the realization of MR capable of modifying electrical resistance on the order of the magnitude level, two strategies have seen particular success. First, materials designed on the verge of a magnetically active metal-insulator transition offer the possibility of magnetic-field control between phases capable of driving a large MR response (changes of ∼10 5 % have been reported) [5]. Alternatively, in nonmagnetic compounds it is known that the combination of carrier compensation and high mobility can lead to nonsatura...

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Section: (C)supporting

confidence: 69%

Extreme magnetoresistance in magnetic rare-earth monopnictides

Ye¹,

Suzuki²,

Wicker³

et al. 2018

Phys. Rev. B

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“…The anomaly around 16 K is attributed to a possible impurity phase of GdP (see Table I). 20 Another anomaly, which was not observed in resistivity and magnetization, is visible around 6 K under magnetic fields, the origin of which is unclear. Applying magnetic fields, the sharp anomaly due to the AFM transition shifted to lower temperatures and was quickly suppressed, disappearing at 7 T. This is consistent with the results of resistivity measurements under magnetic fields.…”

mentioning

confidence: 99%

Magnetic Properties of Filled Skutterudite Phosphides with Heavy Lanthanides Synthesized under High Pressure

et al. 2008

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Filled skutterudite phosphides with heavy lanthanides LnT 4P12 (Ln=Gd, Tb, Dy, T =Fe, Ru, Os) were prepared at high temperatures and high pressures. The magnetic properties of these compounds were studied in detail through electrical resistivity ρ(T), magnetic susceptibility, magnetization, specific heat, and thermoelectric power S(T) measurements. The filled skutterudite DyRu4P12 was synthesized for the first time. DyRu4P12 shows an antiferromagnetic transition at TN =15 K. The dramatic increase at TN observed in ρ(T) and S(T) suggest the formation of a superzone gap due to Fermi surface nesting. All the compounds undergo a ferromagnetic or antiferromagnetic transition at low temperatures except TbOs4P12. TbOs4P12 is found to be paramagnetic down to 2 K. The magnetic ordered states of filled skutterudite phosphides containing heavy lanthanides are discussed.

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“…Experimentally, the GdP (As, Sb, Bi) pnictides are found to be metallic [58]. For GdN, as noted previously, the experimental temperature-dependent resistivity of the GdN fi lm [126] shows a picture (fi gure 8) that differs from other GdX compounds (fi gure 9, [58]). The high-temperature behavior of the resistivity of GdN is more like that of a semiconductor, apparently different from other Gd monopnictides.…”

Section: Gd Monopnictidesmentioning

confidence: 61%

“…Among all the rare-earth monopnictides, the Gd monopnictides have been and continue to be studied extensively, nonetheless, there still remains intense controversy regarding their electronic structure and transport properties [31,36,43,58,70,88,93,103,122,126]. This is especially true for GdN.…”

Section: Gd Monopnictidesmentioning

confidence: 97%

“…Xiao and Chien found that GdN fi lms are insulating [56]. Li et al reported the growth of large single crystals of GdX (X = P, As, Sb, Bi) in 1996 and found them all to be well-compensated semimetals that order antiferromagnetically [57,58]. The photoemission studies of Yamada et al showed that the occupied 4f states in GdP lie around 8.4 eV below E F , and shift down from GdP to GdBi [59].…”

Section: Early Experiments and Theoretical Studiesmentioning

confidence: 99%

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Electronic, Magnetic and Transport Properties of Rare‐Earth Monopnictides

Duan¹,

Sabirianov²,

Mei³

et al. 2007

ChemInform

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The electronic structures and magnetic properties of many rare-earth monopnictides are reviewed in this article. Possible candidate materials for spintronics devices from the rare-earth monopnictide family, i.e. high polarization (nominally half-metallic) ferromagnets and antiferromagnets, are identifi ed. We attempt to provide a unifi ed picture of the electronic properties of these strongly correlated systems. The relative merits of several ab initio theoretical methods, useful in the study of the rare-earth monopnictides, are discussed. We present our current understanding of the possible half-metallicity, semiconductor-metal transitions, and magnetic orderings in the rare-earth monopnictides. Finally, we propose some potential strategies to improve the magnetic and electronic properties of these candidate materials for spintronics devices.

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Electrical transport properties of semimetallic GdXsingle crystals (X=P, As, Sb, and Bi)

Cited by 74 publications

References 25 publications

Extreme magnetoresistance in magnetic rare-earth monopnictides

Extreme magnetoresistance in magnetic rare-earth monopnictides

Magnetic Properties of Filled Skutterudite Phosphides with Heavy Lanthanides Synthesized under High Pressure

Electronic, Magnetic and Transport Properties of Rare‐Earth Monopnictides

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