Magnetic properties and critical behaviors of the nodal-line semimetal candidate ErIn3

The AuCu3-type intermetallic compoundsReIn3(Re= a rare earth ion) with type-IV magnetic space groups are predicted to show topologically nontrivial electronic states. Here, we grow ErIn3single crystals, and study their magnetic properties and critical behaviors by means of the magnetic susceptibility, and magnetization isotherm measurements. Combining a detailed analysis of the magnetic susceptibility and isothermal magnetization, we find that this compound harbors a complicated magnetic phase diagram, and its magnetic moment arrangement appears not to simply follow the fashion as observed in the isostructural counterpart GdIn3(it adopts a conventional type-Cmagnetic structure that belongs to type-IV magnetic space groups). A careful study of the magnetic properties around the antiferromagnetic (AFM)-paramagnetic transition yields the critical exponentsβ= 0.309 (0.297),γ= 1.117 (1.038), andδ= 4.617 (4.454), indicating that the tricritical mean field model or the three-dimensional Ising model works for ErIn3's magnetic behaviors and the presence of a long-range AFM interaction therein. Besides, the exchange interaction distanceJ(r) ∼r-4.665as well confirms a long-range magnetic coupling in ErIn3. Our results offer the clues that the magnetic structure varies from one member ofReIn3family to another, and to confirm their electronic features in the AFM phases further experimental and theoretical studies are still desired.

Anisotropic magnetoresistance and electronic features of the candidate topological compound praseodymium monobismuthide

PrBi, a sister member of the rare-earth monopnictide family, is an excellent candidate for studying extreme magnetoresistance and nontrivial topological electronic states. In this study, we perform angular magnetoresistance measurements as well as bulk and surface band structure calculations on this compound. PrBi's magnetoresistance is revealed to be significantly angle-dependent and shows a fourfold symmetry as always observed in the nonmagnetic isostructural counterparts, including LaSb, LaBi, and LuBi. Its angular magnetoresistance can be reproduced well using the semiclassical two-band model. The deduced parameters suggest that PrBi hosts an elongated electron pocket with a mobility anisotropy of ∼3.13 and is slightly uncompensated in its carrier concentration. Our bulk and surface band structure calculations confirm the anisotropic electronic features. Moreover, we reveal that a nodal-line-shaped surface state appears at the X̄ point, and is associated with the quadratic dispersion along the -X̄ direction, and the linear type-I Dirac dispersion along the X̄-M̄ direction. Owing to the type-I Dirac dispersion feature, PrBi could serve as a promising material platform for studying many unexpected physical properties, such as the highly anisotropic transport and valley polarization of electrons.

Coupled electronic and magnetic relaxation in Fe1+yTe: direct evidence for the interaction between itinerant carriers and local moments

Iron chalcogenides are of particular interests among iron-based superconductors due to their distinct properties such as high-T_con FeSe monolayer and competing magnetic correlations in Fe_1+yTe. Here we report unusual transport properties observed near the critical composition of Fe_1+yTe (y∼ 0.09) where competing magnetic correlations exist. The resistivity exhibits surprising temperature-dependent relaxation behavior belowT_N, resulting in the increase of resistivity with time for 35 K <T<T_N, but the decrease of resistivity with time for 10 K <T< 35 K. Such resistivity relaxation is intimately coupled to the magnetization relaxation and can be attributed to the glassy magnetic states induced by the competing magnetic orders. These findings demonstrate strong coupling between itinerant carriers and local ordered moments in Fe_1+yTe.

The novel HLA-A*02:625 allele was identified in a Chinese bone marrow donor

HLA-A*02:625 differs from HLA-A*02:06:01:01 by a single nucleotide substitution at position 806 C>T.

Identification of the novel HLA-B*27:04:06 allele in a Chinese bone marrow donor

HLA-B*27:04:06 differs from HLA-B*27:04:01 by a single-nucleotide substitution at position 396 C > A.

Identification of the novel HLA-B*27:147 allele by polymerase chain reaction sequence-based typing

HLA-B*27:147 differs from HLA-B*27:04:01 by a single nucleotide substitution at position 523 C>G.

Identification of 2 novel HLA-B alleles, HLA-B*55:02:09 and HLA-B*55:80 in Chinese individuals

HLA-B*55:02:09 and HLA-B*55:80 differ from HLA-B*55:02:01 by 1 single nucleotide substitution, respectively.

Identification of the novel null allele, HLA-C*01:109N, using polymerase chain reaction sequence-based typing in a Chinese leukemia patient

HLA-C*01:109N differs from HLA-C*01:02:01 by a single nucleotide substitution at position 683 G > A.

Identification of the novel HLA-B*13:83 allele by polymerase chain reaction sequence-based typing in a Chinese cord blood donor

HLA-B*13:83 differs from HLA-B*13:01:01 by 2 nucleotide substitutions at positions 103 and 106.

Intermartensitic Transformation and Enhanced Exchange Bias in Pd (Pt) -doped Ni-Mn-Sn alloys

In this work, we studied the phase transitions and exchange bias of Ni_50−xMn₃₆Sn₁₄T_x (T = Pd, Pt; x = 0, 1, 2, 3) alloys. An intermartensitic transition (IMT), not observed in Ni₅₀Mn₃₆Sn₁₄ alloy, was induced by the proper application of negative chemical pressure by Pd(Pt) doping in Ni_50−xMn₃₆Sn₁₄T_x (T = Pd, Pt) alloys. IMT weakened and was suppressed with the increase of applied field; it also disappeared with further increase of Pd(Pt) content (x = 3 for Pd and x = 2 for Pt). Another striking result is that exchange bias effect, ascribed to the percolating ferromagnetic domains coexisting with spin glass phase, is notably enhanced by nonmagnetic Pd(Pt) addition. The increase of unidirectional anisotropy by the addition of Pd(Pt) impurities with strong spin-orbit coupling was explained by Dzyaloshinsky-Moriya interactions in spin glass phase.

Identification of a novel HLA-B*54:34 allele by polymerase chain reaction sequence-based typing in a Chinese leukemia patient

HLA-B*54:34 is different from HLA-A*54:01:01 by a single nucleotide substitution at position 343 G>A.

Prognostic value of ZFP36 and SOCS3 expressions in human prostate cancer

PURPOSE

ZFP36 ring finger protein (ZFP36) and the suppressor of cytokine signaling 3 (SOCS3) have been reported to, respectively, regulate NF-κB and STAT3 signaling pathways. To better understand the correlation of NF-κB and STAT3 negative regulates pathway, we have investigated the involvement of ZFP36 and SOCS3 expressions in human prostate cancer (PCa).

METHODS

In the present study, paired patient tissue microarrays were analyzed by immunohistochemistry, and the ZFP36 protein expression was quantitated as immunoreactive scores in patients with PCa. Associations between ZFP36/SOCS3 expression and various clinicopathological features and prognosis of PCa patients were statistically analyzed based on the Taylor database. Then, the functions of ZFP36 and SOCS3 in cancerous inflammation were determined using qPCR and immunohistochemistry in vitro and in vivo.

RESULTS

ZFP36 protein expression in PCa tissues was significantly lower than those in non-cancerous prostate tissues (P < 0.05). In mRNA level, ZFP36 and SOCS3 had a close correlation with each other (P < 0.01, Pearson r = 0.848), and its upregulation was both significantly associated with low Gleason score (P < 0.001 and P < 0.001, respectively), negative metastasis (P < 0.001 and P < 0.001, respectively), favorable overall survival (P < 0.001 and P < 0.05, respectively), and negative biochemical recurrence (P < 0.001 and P < 0.001, respectively). Functionally, LPS treatment could lead to the overexpression of ZFP36 and SOCS3 in vitro and vivo.

CONCLUSIONS

Our data offer the convincing evidence for the first time that the aberrant expressions of ZFP36 and SOCS3 may be involved into the progression and patients' prognosis of PCa, implying their potentials as candidate markers of this cancer.

High-performance n-MoS2/i-SiO2/p-Si heterojunction solar cells

A solar cell based on the n-MoS2/i-SiO2/p-Si heterojunction is fabricated. The device exhibits a high power-conversion efficiency of 4.5% due to the incorporation of a nano-scale SiO2 buffer into the MoS2/Si interface. The present device architectures are envisaged as potentially valuable candidates for high-performance photovoltaic devices.

HLA-C*06:103, a novel allele was identified in a Chinese patient awaiting hematopoietic stem cell transplantation

HLA-C*06:103 shows four nucleotides difference from that of HLA-C*06:02:01:01.

Identification of a novel HLA-A*02:06:14 allele by polymerase chain reaction sequence-based typing in a Chinese bone marrow donor

HLA*02:06:14 differs from HLA-A*02:06:01 by a single nucleotide substitution G > A at position 246.

Identification of the novel HLA-B*15:257 allele by polymerase chain reaction sequence-based typing in a Chinese individual

HLA-B*15:257 has one nucleotide change in exon 2 at position 232C>G from B*15:01:01:01.