Quantum interference effects in a strongly fluctuating magnetic field

1996 ◽  
Vol 53 (20) ◽  
pp. 13641-13644 ◽  
Author(s):  
G. M. Gusev ◽  
U. Gennser ◽  
X. Kleber ◽  
D. K. Maude ◽  
J. C. Portal ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Interference ◽  
Interference Effects

scholarly journals Induced unconventional superconductivity on the surface states of Bi2Te3 topological insulator

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Sophie Charpentier ◽  
Luca Galletti ◽  
Gunta Kunakova ◽  
Riccardo Arpaia ◽  
Yuxin Song ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Topological Insulator ◽  
Quantum Interference ◽  
Order Parameter ◽  
Thermal Strain ◽  
Surface States ◽  
Field Pattern ◽  
Key Factors ◽  
Ordered Phases ◽  
Simultaneous Existence

Abstract Topological superconductivity is central to a variety of novel phenomena involving the interplay between topologically ordered phases and broken-symmetry states. The key ingredient is an unconventional order parameter, with an orbital component containing a chiral p x  + ip y wave term. Here we present phase-sensitive measurements, based on the quantum interference in nanoscale Josephson junctions, realized by using Bi2Te3 topological insulator. We demonstrate that the induced superconductivity is unconventional and consistent with a sign-changing order parameter, such as a chiral p x  + ip y component. The magnetic field pattern of the junctions shows a dip at zero externally applied magnetic field, which is an incontrovertible signature of the simultaneous existence of 0 and π coupling within the junction, inherent to a non trivial order parameter phase. The nano-textured morphology of the Bi2Te3 flakes, and the dramatic role played by thermal strain are the surprising key factors for the display of an unconventional induced order parameter.

Quantum interference effects in percolated metal networks

1994 ◽  
Vol 194-196 ◽  
pp. 1109-1110 ◽  
Author(s):  
M.E. Gershenson ◽  
P.M. Echternach ◽  
H.M. Bozler ◽  
A.L. Bogdanov ◽  
B. Nilsson
Keyword(s):  
Quantum Interference ◽  
Interference Effects

scholarly journals QUANTUM INTERFERENCE EFFECTS IN SPACETIME OF SLOWLY ROTATING COMPACT OBJECTS IN BRANEWORLD

2010 ◽  
Vol 25 (04) ◽  
pp. 243-256 ◽  
Author(s):  
A. I. MAMADJANOV ◽  
A. A. HAKIMOV ◽  
S. R. TOJIEV
Keyword(s):  
Phase Shift ◽  
Quantum Interference ◽  
Relativistic Quantum ◽  
Additional Term ◽  
Compact Objects ◽  
Sagnac Effect ◽  
Interference Effects ◽  
Upper Limit ◽  
Neutron Interferometer ◽  
Shift Effect

The relativistic quantum interference effects in the spacetime of slowly rotating object in braneworld as the Sagnac effect and phase shift effect of interfering particle in neutron interferometer are derived in unified way. It is found that in the case of the Sagnac effect, the influence of brane parameter is becoming important due to the fact that the angular velocity of the locally non-rotating observer is increased by the brane tension. In the case of neutron interferometry, it is found that an additional term in the phase shift of interfering particle emerges due to the presence of the brane parameter Q*. From the obtained expressions of phase shift in Mach–Zehnder interferometer upper limit for brane parameter has been estimated. From the results of the recent experiments we have obtained upper limit for the tidal charge as Q* ≲ 107 cm 2. Finally, as an example, we apply the obtained results to the calculation of the (ultra-cold neutrons) energy level modification in the gravitational field of slowly rotating gravitating object in the braneworld.

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