scholarly journals Direct measurement of the long-range p−d exchange coupling in a ferromagnet-semiconductor Co/CdMgTe/CdTe quantum well hybrid structure

2017 ◽  
Vol 96 (18) ◽  
Author(s):  
I. A. Akimov ◽  
M. Salewski ◽  
I. V. Kalitukha ◽  
S. V. Poltavtsev ◽  
J. Debus ◽  
...  
Keyword(s):  
Quantum Well ◽  
Long Range ◽  
Direct Measurement ◽  
Exchange Coupling ◽  
Hybrid Structure

scholarly journals Low voltage control of exchange coupling in a ferromagnet-semiconductor quantum well hybrid structure

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
V. L. Korenev ◽  
I. V. Kalitukha ◽  
I. A. Akimov ◽  
V. F. Sapega ◽  
E. A. Zhukov ◽  
...  
Keyword(s):  
Quantum Well ◽  
Exchange Coupling ◽  
Low Voltage ◽  
Voltage Control ◽  
Hybrid Structure ◽  
Semiconductor Quantum Well

Coexistence of Short- and Long-Range Ferromagnetic Proximity Effects in a Fe/(Cd,Mg)Te/CdTe Quantum Well Hybrid Structure

Nano Letters ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 2370-2375
Author(s):  
Ina V. Kalitukha ◽  
Olga S. Ken ◽  
Vladimir L. Korenev ◽  
Ilya A. Akimov ◽  
Victor F. Sapega ◽  
...  
Keyword(s):  
Quantum Well ◽  
Long Range ◽  
Hybrid Structure ◽  
Proximity Effects

scholarly journals Moiré pattern of interference dislocations in condensate of indirect excitons

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
J. R. Leonard ◽  
Lunhui Hu ◽  
A. A. High ◽  
A. T. Hammack ◽  
Congjun Wu ◽  
...  
Keyword(s):  
Long Range ◽  
Direct Measurement ◽  
Quantum Systems ◽  
Matter Waves ◽  
Moire Pattern ◽  
Indirect Excitons ◽  
Moiré Pattern ◽  
Moiré Effect ◽  
Phase Singularities ◽  
Bose Einstein

AbstractInterference patterns provide direct measurement of coherent propagation of matter waves in quantum systems. Superfluidity in Bose–Einstein condensates of excitons can enable long-range ballistic exciton propagation and can lead to emerging long-scale interference patterns. Indirect excitons (IXs) are formed by electrons and holes in separated layers. The theory predicts that the reduced IX recombination enables IX superfluid propagation over macroscopic distances. Here, we present dislocation-like phase singularities in interference patterns produced by condensate of IXs. We analyze how exciton vortices and skyrmions should appear in the interference experiments and show that the observed interference dislocations are not associated with these phase defects. We show that the observed interference dislocations originate from the moiré effect in combined interference patterns of propagating condensate matter waves. The interference dislocations are formed by the IX matter waves ballistically propagating over macroscopic distances. The long-range ballistic IX propagation is the evidence for IX condensate superfluidity.

scholarly journals Long-Range Phase Coherence in Double-Barrier Magnetic Tunnel Junctions with a Large Thick Metallic Quantum Well

2015 ◽  
Vol 115 (15) ◽  
Author(s):  
B. S. Tao ◽  
H. X. Yang ◽  
Y. L. Zuo ◽  
X. Devaux ◽  
G. Lengaigne ◽  
...  
Keyword(s):  
Quantum Well ◽  
Long Range ◽  
Tunnel Junctions ◽  
Magnetic Tunnel Junctions ◽  
Phase Coherence ◽  
Double Barrier

Quantum Confinement-Controlled Exchange Coupling in Manganese(II)-Doped CdSe Two-Dimensional Quantum Well Nanoribbons

Nano Letters ◽  
2012 ◽  
Vol 12 (10) ◽  
pp. 5311-5317 ◽  
Author(s):  
Rachel Fainblat ◽  
Julia Frohleiks ◽  
Franziska Muckel ◽  
Jung Ho Yu ◽  
Jiwoong Yang ◽  
...  
Keyword(s):  
Quantum Well ◽  
Quantum Confinement ◽  
Exchange Coupling ◽  
Two Dimensional

scholarly journals The impact of number of repeats N on the interlayer exchange in $$[\text {Fe/MgO}]_{N} $$(001) superlattices

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tobias Warnatz ◽  
Fridrik Magnus ◽  
Nanny Strandqvist ◽  
Sarah Sanz ◽  
Hasan Ali ◽  
...  
Keyword(s):  
Quantum Well ◽  
Exchange Coupling ◽  
Neutron Reflectometry ◽  
Interlayer Exchange Coupling ◽  
Magnetic Switching ◽  
Interlayer Exchange ◽  
Quantum Well States ◽  
The Impact ◽  
Polarized Neutron Reflectometry ◽  
Mgo Layers

AbstractThe strength of the interlayer exchange coupling in [Fe/MgO]$$_N$$ N (001) superlattices with 2 ≤ N ≤ 10 depends on the number of bilayer repeats (N). The exchange coupling is antiferromagnetic for all the investigated thicknesses while being nine times larger in a sample with N = 4 as compared to N = 2. The sequence of the magnetic switching in two of the samples (N = 4, N = 8) is determined using polarized neutron reflectometry. The outermost layers are shown to respond at the lowest fields, consistent with having the weakest interlayer exchange coupling. The results are consistent with the existence of quantum well states defined by the thickness of the Fe and the MgO layers as well as the number of repeats (N) in [Fe/MgO]$$ _{N}$$ N (001)superlattices.

Quantum Well Theory of the Exchange Coupling in Co/Cu/Co(001)

1995 ◽  
Vol 74 (18) ◽  
pp. 3696-3699 ◽  
Author(s):  
J. Mathon ◽  
Murielle Villeret ◽  
R. B. Muniz ◽  
J. d'Albuquerque e Castro ◽  
D. M. Edwards
Keyword(s):  
Quantum Well ◽  
Exchange Coupling

Direct Measurement of Subnetwork Exchange Coupling Constant for Ferrimagnets

1994 ◽  
Vol 33 (Part 1, No. 5A) ◽  
pp. 2541-2543 ◽  
Author(s):  
Hong Fu ◽  
Te-ho Wu ◽  
M. Mansuripur
Keyword(s):  
Direct Measurement ◽  
Exchange Coupling ◽  
Coupling Constant ◽  
Exchange Coupling Constant

Enhancement of magnetic field in superconductor and magnetic semiconductor quantum well hybrid structure

2007 ◽  
Vol 301-302 ◽  
pp. 906-909 ◽  
Author(s):  
Sanghoon Lee ◽  
D.Y. Shin ◽  
E.K. Hyun ◽  
S.-R. Lee ◽  
M. Dobrowolska ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Well ◽  
Magnetic Semiconductor ◽  
Hybrid Structure ◽  
Semiconductor Quantum Well
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