Results 81 to 90 of about 14,666,949 (243)

Tunable Negative Thermal Expansion in Fe/Cr‐Substituted Nd2Co17 Compounds via Magnetoelastic Coupling

Advanced Science, EarlyView.
This study achieves anisotropic thermal expansion tuning in Nd2(Co1‐xFex)17‐yCry compounds via a magnetoelastic strategy. Variable‐temperature synchrotron X‐ray diffraction reveals that increased Fe content induces switchable lattice responses. Compositional control reduces the volume expansion coefficient αV by 20% (x═0.7) and modulates TC (442–625 K),
Jiayuan Li, Chenfei Qv, Haoran Tu, Qinfen Gu, Wayne D. Hutchison, Stewart J. Campbell, Zhenxiang Cheng, Wenquan Wang, Jianli Wang   +8 more
wiley   +1 more source

Spin density wave rather than tetragonal structure is prerequisite for superconductivity in La3Ni2O7-δ

Nature Communications
The pressure-induced high-temperature (T c ) superconductivity in nickelates La3Ni2O7-δ has sparked significant interest to explore its superconductivity at ambient pressure.
Mengzhu Shi, Di Peng, Yikang Li, Shaohua Yang, Zhenfang Xing, Yuzhu Wang, Kaibao Fan, Houpu Li, Rongqi Wu, Binghui Ge, Zhidan Zeng, Qiaoshi Zeng, Jianjun Ying, Tao Wu, Xianhui Chen   +14 more
doaj   +1 more source

Doping patterns in N-type high temperature superconductors PLCCO and NCCO [PDF]

, 2009
It has been demonstrated that the correlation between the doping distance and the critical transition temperature Tc for P-type HTSCs also applies to double doped N-type HTSCs.
Huber, F., Hetfleisch, F., von Schönermark, M., Moritz, A., Nikoghosyan, A., Stepper, M., Röser, H.P.   +6 more
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Bosonic spectral function and the electron-phonon interaction in HTSC cuprates [PDF]

, 2010
In this paper we discuss experimental evidence related to the structure and origin of the bosonic spectral function alpha 2F (omega) in high-temperature superconducting (HTSC) cuprates at and near optimal doping.
Kulic, Miodrag L., E. G. Maksimov, Maksimov, Evgeny G., Dolgov, O.V., M. L. Kulić, Kulić, M.L., Dolgov, Oleg V., O. V. Dolgov, Maksimov, E.G.   +8 more
core   +1 more source

New High‐Tc Charge‐Transfer Multiferroicity in the Quasi‐2D Antiferromagnet CrSbS3

Advanced Science, EarlyView.
ABSTRACT Low‐dimensional magnets, particularly 2D systems, offer a rich platform for realizing unconventional multiferroic mechanisms, especially when multiple polarization channels coexist. In the quasi‐2D antiferromagnet CrSbS3, which crystallizes in the centrosymmetric orthorhombic space group Pnma and orders magnetically at TN ≈ 90 K, two ...
Hung‐Cheng Wu, Yu‐Hsin Liao, Chih‐Chung Tsai, Pei‐Ying Yang, Yu‐Hao Chang, Yu‐Hui Liang, D. Chandrasekhar Kakarla, Ajay Tiwari, C. Dhanasekhar, Chin‐Wei Wang, Daisuke Okuyama, Chia‐Nung Kuo, Chin‐Shan Lue, Tzu‐Hsuan Weng, Kung‐Hsuan Lin, Jau‐Wern Chiou, Chi‐Hung Lee, Hung‐Duen Yang   +17 more
wiley   +1 more source

Isotope Effect in the Translation-Invariant Bipolaron Theory of High-Temperature Superconductivity

, 2020
It is shown that the translation-invariant bipolaron theory of superconductivity can explain the dependence of the isotope coefficient in high-temperature superconductors on the critical temperature of a superconducting transition: in the case of strong ...
Victor D. Lakhno
core   +1 more source

Type‐II Dirac Fermions in Monolayer In2O: Interplay of Magnetotransport, Spin Hall Effect, and Superconductivity

Advanced Science, EarlyView.
First‐principles calculations reveal that monolayer In2O${\rm In}_2{\rm O}$ hosts type‐II Dirac fermions near the Fermi level, which split into Weyl points under spin‐orbit coupling. The material exhibits negative and giant magnetoresistance, a pronounced spin Hall effect, and phonon‐mediated superconductivity at 1.5 K, establishing it as a unique ...
Qing‐Bo Liu, De‐Ming Feng, Wen‐Neng Zhao, Yu‐Yang Zhao, Lun Xiong, Xing‐Yi Tan, Hua‐Hua Fu   +6 more
wiley   +1 more source

Superconductivity in an infinite-layer nickelate superlattice

Nature Communications
Recent observations of superconductivity in infinite-layer nickelates offer insights into high-temperature superconductivity mechanisms. However, defects and dislocations in doped films complicate the realization of superconductivity, limiting current ...
Wen Xiao, Zhan Yang, Shilin Hu, Yuzhou He, Xiaofei Gao, Junhua Liu, Zhixiong Deng, Yuhao Hong, Long Wei, Lei Wang, Ziyue Shen, Tianyang Wang, Lin Li, Yulin Gan, Kai Chen, Qinghua Zhang, Zhaoliang Liao   +16 more
doaj   +1 more source

Is There a Metamaterial Route to High Temperature Superconductivity?

Advances in Condensed Matter Physics, 2014
Superconducting properties of a material such as electron-electron interactions and the critical temperature of superconducting transition can be expressed via the effective dielectric response function εeff (q,ω) of the material.
Igor I. Smolyaninov, Vera N. Smolyaninova   +1 more
doaj   +1 more source

Variable-temperature photoluminescence emission instrumentation and measurements on low yield metals [PDF]

, 2010
Measurements of the photoluminescence emission spectra of 99.999 % purity gold, 99.9999 % purity copper, polycrystalline PbMo6S8 and single crystal YBCO were made for λex = 488 nm as a function of temperature (72 K < T < 300 K), time (t < 12 hours ...
ARMSTRONG, HELEN
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