scholarly journals Andreev reflection in a Y-shaped graphene-superconductor device

2018 ◽  
Vol 98 (3) ◽  
Author(s):  
Chao Wang ◽  
Yonglian Zou ◽  
Juntao Song ◽  
Yu-Xian Li
Keyword(s):  
Andreev Reflection ◽  
Superconductor Device

Observations on the growth of barium bismuth oxide thin films

1992 ◽  
Vol 50 (1) ◽  
pp. 76-77
Author(s):  
M G. Norton ◽  
E.S. Hellman ◽  
E.H. Hartford ◽  
C.B. Carter
Keyword(s):  
Substrate Temperature ◽  
Deposition Process ◽  
Nucleation Layer ◽  
Second Stage ◽  
Device Applications ◽  
High Transition ◽  
Substrate Temperatures ◽  
Oriented Material ◽  
Barium Bismuth ◽  
Superconductor Device

The bismuthates (for example, Ba1-xKxBiO3) represent a class of high transition temperature superconductors. The lack of anisotropy and the long coherence length of the bismuthates makes them technologically interesting for superconductor device applications. To obtain (100) oriented Ba1-xKxBiO3 films on (100) oriented MgO, a two-stage deposition process is utilized. In the first stage the films are nucleated at higher substrate temperatures, without the potassium. This process appears to facilitate the formation of the perovskite (100) orientation on (100) MgO. This nucleation layer is typically between 10 and 50 nm thick. In the second stage, the substrate temperature is reduced and the Ba1-xKxBiO3 is grown. Continued growth of (100) oriented material is possible at the lower substrate temperature.

Point Contact Andreev Reflection Measurement of the Spin Polarization of Ferromagnetic Alloy NiFeSb

2002 ◽  
Vol 19 (8) ◽  
pp. 1181-1183 ◽  
Author(s):  
Li Zhuang-Zhi ◽  
Tao Hong-Jie ◽  
Wen Hai-Hu ◽  
Zhang Ming ◽  
Liu Zhu-Hong ◽  
...  
Keyword(s):  
Spin Polarization ◽  
Andreev Reflection ◽  
Point Contact ◽  
Ferromagnetic Alloy ◽  
Reflection Measurement

Andreev-reflection in highly doped Pb/n?InSb/Pb junctions

1993 ◽  
Vol 92 (2) ◽  
pp. 187-190 ◽  
Author(s):  
G. Fischer ◽  
K. Keck
Keyword(s):  
Andreev Reflection

Andreev reflection properties of Majorana doublets modulated by ferromagnetic leads

2021 ◽  
pp. 114848
Author(s):  
Xue-Feng Dai ◽  
Tong Gong ◽  
Lian-Lian Zhang ◽  
Tong-Tong Xu ◽  
Xiao-Qi Wang ◽  
...  
Keyword(s):  
Andreev Reflection

scholarly journals Crossed Andreev reflection in InSb flake Josephson junctions

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
Folkert K. de Vries ◽  
Martijn L. Sol ◽  
Sasa Gazibegovic ◽  
Roy L. M. op het Veld ◽  
Stijn C. Balk ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Andreev Reflection ◽  
Crossed Andreev Reflection

Direct Observation of Quantum Andreev Reflection at Free Surface of SuperfluidH3e

1998 ◽  
Vol 80 (13) ◽  
pp. 2857-2860 ◽  
Author(s):  
Tetsuji Okuda ◽  
Hiroki Ikegami ◽  
Hikota Akimoto ◽  
Hidehiko Ishimoto
Keyword(s):  
Free Surface ◽  
Direct Observation ◽  
Andreev Reflection

scholarly journals Revealing the interference effect of Majorana fermions in a topological Josephson junction

2018 ◽  
Vol 9 ◽  
pp. 520-529 ◽  
Author(s):  
Jie Liu ◽  
Tiantian Yu ◽  
Juntao Song
Keyword(s):  
Josephson Junction ◽  
Interference Effect ◽  
Josephson Effect ◽  
Andreev Reflection ◽  
Local Density ◽  
Localized States ◽  
Majorana Fermions ◽  
Local Density Of States ◽  
Single Side ◽  
Period Oscillation

We study theoretically the local density of states (DOS) in a topological Josephson junction. We show that the well-known 4π Josephson effect originates from the interference effect between two Majorana fermions (MFs) that are localized at the Josephson junction. In addition, the DOS for electrons (holes) shows the 4π interference information along each parity conserved energy spectrum. The DOS displays a 2π period oscillation when two trivial states interfere with each other. This means that the DOS information may be used to distinguish the MFs from trivial localized states. We suggest that the interference effect and the DOS can be detected by using two STM leads or two normal leads. A single side lead can only detect the Andreev reflection tunneling process in the junction, which cannot reveal information about the interference effect in general. However, using two side leads, we can reveal information about the interference effect of the MFs as well as the DOS by combining Andreev reflection with the electron transmission process.

Andreev reflection and tunneling results on YBa2Cu3O7 and Nd2−xCexCuO4−y single crystals

1990 ◽  
pp. 323-333
Author(s):  
T. W. Jing ◽  
Z. Z. Wang ◽  
N. P. Ong ◽  
J. M. Tarascon ◽  
E. Wang
Keyword(s):  
Single Crystals ◽  
Andreev Reflection
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