Enhancement of Tc in BiS2-based superconductors NdO0.7F0.3BiS2 by substitution of Pb for Bi

Demura, Satoshi; Fujisawa, Yuita; Otsuki, Satoshi; Ishio, R.; Takano, Yoshihiko; Sakata, Hideaki

doi:10.1016/j.ssc.2015.09.002

Cited by 13 publications

(5 citation statements)

References 43 publications

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“…This is because the Sb ion was substituted for the Bi ion located in the conduction layers. This increase in resistivity at RT has also been observed in Pb-substituted Ln(O,F)BiS2 (Ln = La, Nd) [15,20], on the other hand Pb substitution induced an enhancement of Tc. Therefore, the effect of substitution on superconductivity does not correlate to the strength of the scattering by the substituted atoms.…”

Section: Resultssupporting

confidence: 64%

“…Although a superconducting transition temperature (T c ) of Ln(O,F)BiS 2 is around 4 K, T c is increased when a lattice strain is introduced. One of the ways to introduce the lattice strain is by partial element substitution with a different ionic radius into Ln, Bi, or S site [10][11][12][13][14][15][16]. The strain introduced by partial element substitution in these crystals is the chemical pressure.…”

Section: Introductionmentioning

confidence: 99%

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Single Crystal Growth and Superconducting Properties of Antimony-Substituted NdO0.7F0.3BiS2

et al. 2017

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Antimony (Sb) substitution of less than 8% was examined on a single crystal of a layered superconductor NdO 0.7 F 0.3 BiS 2 . The superconducting transition temperature of the substituted samples decreased as Sb concentration increased. A lattice constant along the c-axis showed a large decrease compared with that along the a-axis. Since in-plane chemical pressure monotonically decreased as Sb concentration increased, the suppression of the superconductivity is attributed to the decrease in the in-plane chemical pressure.

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Section: Resultssupporting

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Single Crystal Growth and Superconducting Properties of Antimony-Substituted NdO0.7F0.3BiS2

et al. 2017

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“…Using single crystals, scanning tunneling microscopy/spectroscopy (STM/STS) has been performed to analyze the surface structure and the electronic states of BiS 2 -based compounds [58,75,158,200]. Machida et al observed checkerboardstripe electronic states for NdO 0.7 F 0.3 BiS 2 [75].…”

Section: Spectroscopymentioning

confidence: 99%

Material Development and Physical Properties of BiS₂-Based Layered Compounds

Mizuguchi

2019

J. Phys. Soc. Jpn.

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In 2012, we discovered superconductivity in Bi 4 O 4 S 3 and LaO 1-x F x BiS 2 , whose crystal structures are composed of alternate stacks of a BiS 2 -type conduction layer and a blocking layer. Since the discovery, many related superconductors and functional materials have been synthesized. Furthermore, the possibility of unconventional superconductivity has been proposed in recent theoretical and experimental studies. In addition, notable correlations between local structure and physical properties have been revealed in the BiS 2 -based systems. In this review article, we summarize the material development (probably all the compounds) and physical properties of BiS 2 -related materials developed in the last six years. The key parameters for the emergence of bulk superconductivity in the BiS 2 -based compounds are carrier doping to the parent phase (band insulator), pressure-induced structural transition, in-plane chemical pressure, and the suppression of in-plane disorder. We systematically review those parameters and the method of designing new superconductors with BiS 2 layers. In addition, studies of BiS 2 -based compounds as thermoelectric materials are briefly reviewed.Recently, the various functionalities of thermoelectric, photocatalytic, and spintronics materials have been observed (or predicted) for layered chalcogenides related to the BiS 2 -based superconductors. Therefore, for the further development of the layered metal chalcogenide family as high-T c and unconventional superconductors or promising functional materials, understanding the crystal structure and physical properties is crucial.In this review article, we summarize the material development of the BiS 2 -related layered compounds and their physical and chemical properties. First, material information from Refs. 12-219, categorized into properties shown in the paper, is summarized in Table I. On the basis of the table, the essence of the structural variation and the physical properties is described. Furthermore, we try to systematically clarify the physical and chemical parameters essential for the emergence of 18, 19, 89, 90, 91, 92, 94, 103, 105, 108, 109, 110, 154, 170 154, 161, 170, 207 La(O,F)BiS 2 3( AP) 11 (HP) 11.5 (HPA)

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“…However, SbS 2 -based compounds do not show superconductivity [16]. On the other hand, the partial substitution of Ag [17], Cu [18], and Pb [19] for Bi-site all show superconductivity. Especially, Pb substitution enhances the superconducting transition temperature (T c ) [19].…”

Section: Introductionmentioning

confidence: 95%

“…On the other hand, the partial substitution of Ag [17], Cu [18], and Pb [19] for Bi-site all show superconductivity. Especially, Pb substitution enhances the superconducting transition temperature (T c ) [19]. These results indicate that substitution of the other elements for Bi-site may enhance superconducting properties.…”

Section: Introductionmentioning

confidence: 99%

Growth and superconducting properties of Cd-doped La(O,F)BiS2 single crystals

Nagao¹,

Tanaka²,

Watauchi³

et al. 2017

Solid State Communications

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Cd-doped La(O,F)BiS 2 single crystals were grown using a CsCl/KCl flux. The grown crystals have a plate-like shape with ~1-2 mm square size in a well-developed ab-plane. The Cd doping in the crystals was successfully characterized by single crystal X-ray diffraction and electron probe microanalysis techniques. The superconductivity of La(O,F)BiS 2 was gradually suppressed with Cd doping. The superconducting transition temperature with zero resistivity of La(O 0.54 F 0.46 )(Bi 0.92 Cd 0.08 )S 2 was 2.3 K. The Cd doping does not change the superconducting anisotropy so much, albeit the considerable suppression of T c .

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Enhancement of Tc in BiS2-based superconductors NdO0.7F0.3BiS2 by substitution of Pb for Bi

Cited by 13 publications

References 43 publications

Single Crystal Growth and Superconducting Properties of Antimony-Substituted NdO0.7F0.3BiS2

Single Crystal Growth and Superconducting Properties of Antimony-Substituted NdO0.7F0.3BiS2

Material Development and Physical Properties of BiS₂-Based Layered Compounds

Growth and superconducting properties of Cd-doped La(O,F)BiS2 single crystals

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Enhancement of Tc in BiS2-based superconductors NdO0.7F0.3BiS2 by substitution of Pb for Bi

Cited by 13 publications

References 43 publications

Single Crystal Growth and Superconducting Properties of Antimony-Substituted NdO0.7F0.3BiS2

Single Crystal Growth and Superconducting Properties of Antimony-Substituted NdO0.7F0.3BiS2

Material Development and Physical Properties of BiS2-Based Layered Compounds

Growth and superconducting properties of Cd-doped La(O,F)BiS2 single crystals

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Material Development and Physical Properties of BiS₂-Based Layered Compounds