113 citations · 1.1k across the 70 of their papers we have counts for
73 papers
Aging Effects on Superconducting Properties of BiS2-Based Compounds: First-12-Year Restudy
Poonam Rani, Rajveer Jha, V. P. S. Awana +1
Decomposition of superconductors sometimes becomes crucial when studying essential physical properties of the superconductors. For example, the cuprate superconductor YBa2Cu3O7-d d…
Evaluation of insulating behavior by Pb Substitution and Pressure-Induced Superconductivity in La2O2Bi3-xPb1+xS6
Rajveer Jha, Valenta Jarosla, Naohito Tsujii +6
We report synthesis, characterization, and physical properties of layered bismuth-sulfide compounds La2O2Bi3-xPb1+xS6. We synthesized a new La2O2Bi3PbS6 compound, whose crystal str…
Pressure tuning of localization and superconductivity in LaOPbBiS and LaOBiAgS
Y. Yuan, H. Arima, M. Masaoka +5
We report the effect of pressure on the electrical transport properties of the four-layer-type bismuth chalcogenide semiconductors LaOPbBiS and LaOBiAgS$_{6…
High-pressure effects on superconducting properties and crystal structure of Bi-based layered superconductor La2O2Bi3Ag0.6Sn0.4S6
Supeng Liu, Ryo Matsumoto, Rajveer Jha +5
The effects of pressure on the superconducting properties of a Bi-based layered superconductor La2O2Bi3Ag0.6Sn0.4S6, which possesses a four-layer-type conducting layer, have been s…
Unconventional isotope effect on transition temperature in BiS2-based superconductor Bi4O4S3
Rajveer Jha, Yoshikazu Mizuguchi
We report the sulfur isotope effect on transition temperature in a BiS2-based superconductor Bi4O4S3. Polycrystalline samples of Bi4O4S3 were prepared using 32S and 34S isotope che…
Evolution of two bulk-superconducting phases in Sr0.5RE0.5FBiS2 (RE: La, Ce, Pr, Nd, Sm) by external hydrostatic pressure effect
Aichi Yamashita, Rajveer Jha, Yosuke Goto +7
Polycrystalline samples of Sr1-xRExFBiS2 (RE: La, Ce, Pr, Nd, and Sm) were synthesized via the solid-state reaction and characterized using synchrotron X-ray diffraction. Although…
Bulk superconductivity induced by Se substitution in self-doped BiCh2-based compound CeOBiS2-xSex
Ryosuke Kiyama, Yosuke Goto, Kazuhisa Hoshi +7
We report the Se substitution effects on the crystal structure, superconducting properties, and valence states of self-doped BiCh2-based compound CeOBiS2-xSex. Polycrystalline CeOB…
Superconducting properties of high-entropy-alloy tellurides M-Te (M: Ag, In, Cd, Sn, Sb, Pb, Bi) with a NaCl-type structure
Md. Riad Kasem, Kazuhisa Hoshi, Rajveer Jha +6
High-entropy-alloy-type tellurides M-Te, which contain five different metals of M = Ag, In, Cd, Sn, Sb, Pb, and Bi, were synthesized using high pressure synthesis. Structural chara…
Superconductivity in Se-doped La2O2Bi2Pb2S6-xSex with a Bi2Pb2Ch4-type thick conducting layer
Rajveer Jha, Yosuke Goto, Tatsuma D. Matsuda +2
La2O2Bi2Pb2S6 is a layered Bi-based oxychalcogenide with a thick four-layer-type conducting layer. Although La2O2Bi2Pb2S6 is a structural analogue of La2O2Bi3AgS6, which is a super…
High-pressure synthesis and superconducting properties of NaCl-type In1-xPbxTe (x = 0-0.8)
Masayoshi Katsuno, Rajveer Jha, Kazuhisa Hoshi +3
We have investigated the Pb-substitution effect on the superconductivity of NaCl-type In1-xPbxTe samples obtained using high-pressure synthesis. Polycrystalline samples with x = 0-…
Improvement of superconducting properties by chemical pressure effect in Eu-doped La2-xEuxO2Bi3Ag0.6Sn0.4S6
Rajveer Jha, Yosuke Goto, Ryuji Higashinaka +4
We have investigated the substitution effect of Eu on the superconductivity in La2-xEuxO2Bi3Ag0.6Sn0.4S6. Recently, we reported an observation of superconductivity at 0.5 K in a la…
Detection of hole pockets in the candidate type-II Weyl semimetal MoTe from Shubnikov-de Haas quantum oscillations
Y. J. Hu, W. C. Yu, Kwing To Lai +12
The bulk electronic structure of -MoTe features large hole Fermi pockets at the Brillouin zone center () and two electron Fermi surfaces along the direction. Howe…
Enhanced superconductivity by Na doping in SnAs-based layered compound NaSnAs
Hao Yuwen, Yosuke Goto, Rajveer Jha +6
Superconducting transition temperature (Tc) reported in SnAs-based layered compound NaSnAs varies from 1.2 to 1.6 K, implying that its superconductivity is critically sensi…
Effect of Indium doping on the superconductivity of layered oxychalcogenide La2O2Bi3Ag1-xInxS6
Rajveer Jha, Yosuke Goto, Tatsuma D Matsuda +2
We report on the substitution effect of Indium (In) at the Ag site of layered oxychalcogenide La2O2Bi3Ag1-xInxS6. The Tc decreases with increasing In concentration. A hump in the n…
Optical evidence of type-II Weyl semimetals MoTe and WTe
S. Kimura, Y. Nakajima, Z. Mita +4
The carrier dynamics and electronic structures of type-II Weyl semimetal candidates MoTe and WTe have been investigated by using temperature-dependent optical conductivity…
Bulk superconductivity in La2O2M4S6-type layered oxychalcogenide La2O2Bi3Ag0.6Sn0.4S5.7Se0.3
Rajveer Jha, Yosuke Goto, Tatsuma D. Matsuda +4
Recently, we reported the observation of superconductivity at ~0.5 K in a La2O2M4S6-type (M: metal) layered oxychalcogenide La2O2Bi3AgS6, which is a layered compound related to the…
Superconductivity in layered Oxychalcogenide La2O2Bi3AgS6
Rajveer Jha, Yosuke Goto, Ryuji Higashinaka +3
We report the superconductivity in layered oxychalcogenide La2O2Bi3AgS6 compound. The La2O2Bi3AgS6 compound has been reported recently by our group, which has a tetragonal structur…
X-ray photoelectron spectroscopy, Magnetotransport and Magnetization study of Nb2PdS5 superconductor
Reena Goyal, A. K. Srivastava, Monu Mishra +3
In the present report, we investigate various properties of the Nb2PdS5 superconductor. Scanning electron microscopy displayed slabs like laminar growth of Nb2PdS5while X-ray photo…
Anomalous magnetotransport properties of high-quality single crystals of Weyl semimetal WTe2: Sign change of Hall resistivity
Rajveer Jha, Ryuji Higashinaka, Tatsuma D. Matsuda +2
We report on a systematic study of Hall effect using high quality single crystals of type-II Weyl semimetal WTe2 with the applied magnetic field B//c. The residual resistivity rati…
Temperature independent band structure of WTe2 as observed from ARPES
S. Thirupathaiah, Rajveer Jha, Banabir Pal +5
Extremely large magnetoresistance (XMR), observed in transition metal dichalcogendies, WTe, has attracted recently a great deal of research interests as it shows no sign of sat…
MoTe2 : An uncompensated semimetal with extremely large magnetoresistance
S. Thirupathaiah, Rajveer Jha, Banabir Pal +8
Transition-metal dichalcogenides (WTe and MoTe) have drawn much attention, recently, because of the nonsaturating extremely large magnetoresistance (XMR) observed in these…
Evidence for conventional superconductivity in Sr0.1Bi2Se3 from high pressure studies
K. Manikandan, Shruti, P. Neha +9
SrxBi2Se3 is recently reported to be a superconductor derived from topological insulator Bi2Se3. It shows a maximum resistive Tc of 3.25 K at ambient pressure. We report magnetic (…
Intrinsic Phase Diagram of Superconductivity in the BiCh2-based System Without In-plane Disorder
Kouhei Nagasaka, Atsuhiro Nishida, Rajveer Jha +11
We have investigated the crystal structure and physical properties of LaO1-xFxBiSSe to reveal the intrinsic superconductivity phase diagram of the BiCh2-based layered compound fami…
Unusual Dirac fermions on the surface of noncentrosymmetric - BiPd superconductor
S. Thirupathaiah, Soumi Ghosh, Rajveer Jha +8
Combining multiple emergent correlated properties such as superconductivity and magnetism within the topological matrix can have exceptional consequences in garnering new and exoti…