scholarly journals Unconventional superconductivity and surface pairing symmetry in half-Heusler compounds

2018 ◽  
Vol 97 (22) ◽  
Author(s):  
Qing-Ze Wang ◽  
Jiabin Yu ◽  
Chao-Xing Liu
Keyword(s):  
Pairing Symmetry ◽  
Unconventional Superconductivity ◽  
Heusler Compounds

scholarly journals Observation of half-quantum flux in the unconventional superconductor β-Bi2Pd

Science ◽  
2019 ◽  
Vol 366 (6462) ◽  
pp. 238-241 ◽  
Author(s):  
Yufan Li ◽  
Xiaoying Xu ◽  
M.-H. Lee ◽  
M.-W. Chu ◽  
C. L. Chien
Keyword(s):  
Magnetic Flux ◽  
Pairing Symmetry ◽  
Quantum Oscillation ◽  
Unconventional Superconductivity ◽  
Unconventional Superconductor ◽  
Quantum Bits ◽  
Flux Quantization ◽  
Triplet Pairing ◽  
Quantum Flux ◽  
Spin Triplet

Magnetic flux quantization is one of the defining properties of a superconductor. We report the observation of half-integer magnetic flux quantization in mesoscopic rings of superconducting β-Bi2Pd thin films. The half-quantum fluxoid manifests itself as a π phase shift in the quantum oscillation of the superconducting critical temperature. This result verifies unconventional superconductivity of β-Bi2Pd and is consistent with a spin-triplet pairing symmetry. Our findings may have implications for flux quantum bits in the context of quantum computing.

Spin Fluctuation, Orbital States and Non-conventional Superconductivity in Actinides Compounds

2012 ◽  
Vol 1444 ◽  
Author(s):  
S. Kambe ◽  
H. Sakai ◽  
Y. Tokunaga
Keyword(s):  
Spin Fluctuation ◽  
Pairing Symmetry ◽  
Unconventional Superconductivity ◽  
Superconducting Transition ◽  
Magnetic Fluctuations ◽  
Fermi Surfaces ◽  
Unconventional Superconductors ◽  
Wave Pairing ◽  
Superconducting Pairing ◽  
Orbital Character

ABSTRACTIn d-wave unconventional superconductors, superconducting Cooper pairs are believed to be formed via magnetic fluctuations. In fact, the superconducting transition temperature Tc roughly correlates with the antiferromagnetic spin fluctuation energy in d-wave unconventional superconductors including high Tc cuprates. In addition to this correlation, the superconducting pairing symmetry and the magnetic anisotropy of the normal state are found empirically to be strongly correlated in f-electron unconventional superconductors having crystallographic symmetry lower than cubic. In antiferromagnetic systems, unconventional superconductivity appears with singlet (d-wave) pairing for cases of XY anisotropy. In contrast, in ferromagnetic systems, unconventional superconductivity with triplet (e.g. p-wave) pairing appears for cases of Ising anisotropy. In this report, the d-wave case is addressed, the origin of XY anisotropy is discussed in terms of the orbital character; and the angular momentum character jz for each piece of Fermi surfaces is determined.

Solubility Limit and Annealing Effects on the Microstructure & Thermoelectricproperties of Fe 2V 1-XTa xAl 1-YSi y Heusler Compounds

2021 ◽  
Author(s):  
Fabian Garmroudi ◽  
Michael Parzer ◽  
Alexander Riss ◽  
Nikolas Reumann ◽  
Bernhard Hinterleitner ◽  
...  
Keyword(s):  
Solubility Limit ◽  
Heusler Compounds ◽  
Annealing Effects

Emerging flat bands in large-angle twisted bi-layer graphene under pressures

Nanoscale ◽  
2021 ◽  
Author(s):  
Liangbing Ge ◽  
Ni Kun ◽  
Xiaojun Wu ◽  
Zhengping Fu ◽  
Yalin Lu ◽  
...  
Keyword(s):  
Large Angle ◽  
Magic Angle ◽  
Unconventional Superconductivity ◽  
Flat Bands ◽  
Layer Graphene

Recent experiments on magic-angle twisted bi-layer graphene have attracted an intensive attention due to exotic properties such as unconventional superconductivity and correlated insulation. These phenomena were often found at a...

Boosting the thermoelectric performance of Fe2VAl−type Heusler compounds by band engineering

2021 ◽  
Vol 103 (8) ◽  
Author(s):  
F. Garmroudi ◽  
A. Riss ◽  
M. Parzer ◽  
N. Reumann ◽  
H. Müller ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Heusler Compounds ◽  
Band Engineering
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