Berry phase from vortex dynamics in BCS superconductors revisited

1999 ◽  
Vol 313 (1-2) ◽  
pp. 141-147 ◽  
Author(s):  
Akihiro Tanaka ◽  
Masahiko Machida
1993 ◽  
Vol 200 (1-4) ◽  
pp. 42-49 ◽  
Author(s):  
D.J. Thouless ◽  
P. Ao ◽  
Q. Niu
Keyword(s):  

1996 ◽  
Vol 10 (15) ◽  
pp. 1875-1894 ◽  
Author(s):  
M. HATSUDA ◽  
M. SATO ◽  
S. YAHIKOZAWA ◽  
T. HATSUDA

Adiabatic effective action for vortices in neutral and charged superfluids at zero temperature are calculated using the topological Landau-Ginzburg theory recently proposed by Hatsuda, Yahikozawa, Ao and Thouless, and vortex dynamics are examined. The Berry phase term arising in the effective action naturally yields the Magnus force in both neutral and charged superfluids. It is shown that in neutral superfluid there is only one degree of freedom, namely the center of vorticities, and the vortex energy is proportional to the sum of all vorticities so that it is finite only for the vanishing total vorticity of the system. On the other hand the effective mass and the vortex energy for a vortex in charged superfluids are defined individually as expected. The effects of the vortex core on these quantities are also estimated. The possible depinning scenario which is governed by the Magnus force and the inertial mass is also discussed.


PIERS Online ◽  
2005 ◽  
Vol 1 (1) ◽  
pp. 110-114
Author(s):  
Tamio Endo ◽  
Hong Zhu ◽  
Takahisa Sakurada ◽  
Ajay K. Sarkar ◽  
Masanori Okada ◽  
...  

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Fei Wang ◽  
Xuepeng Wang ◽  
Yi-Fan Zhao ◽  
Di Xiao ◽  
Ling-Jie Zhou ◽  
...  

AbstractThe Berry phase picture provides important insights into the electronic properties of condensed matter systems. The intrinsic anomalous Hall (AH) effect can be understood as the consequence of non-zero Berry curvature in momentum space. Here, we fabricate TI/magnetic TI heterostructures and find that the sign of the AH effect in the magnetic TI layer can be changed from being positive to negative with increasing the thickness of the top TI layer. Our first-principles calculations show that the built-in electric fields at the TI/magnetic TI interface influence the band structure of the magnetic TI layer, and thus lead to a reconstruction of the Berry curvature in the heterostructure samples. Based on the interface-induced AH effect with a negative sign in TI/V-doped TI bilayer structures, we create an artificial “topological Hall effect”-like feature in the Hall trace of the V-doped TI/TI/Cr-doped TI sandwich heterostructures. Our study provides a new route to create the Berry curvature change in magnetic topological materials that may lead to potential technological applications.


2021 ◽  
Vol 103 (22) ◽  
Author(s):  
Tyler R. Naibert ◽  
Hryhoriy Polshyn ◽  
Rita Garrido-Menacho ◽  
Malcolm Durkin ◽  
Brian Wolin ◽  
...  

2021 ◽  
Vol 33 (6) ◽  
pp. 061908
Author(s):  
Ashwin Seetharaman ◽  
Hamed Keramati ◽  
Kollengode Ramanathan ◽  
Matthew E Cove ◽  
Sangho Kim ◽  
...  

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