NMR study of the exchange interactions and conduction band polarisation in ErFe2

1981 ◽  
Vol 52 (3) ◽  
pp. 2071-2073 ◽  
Author(s):  
Y. Berthier ◽  
R.A.B. Devine
Keyword(s):  
Conduction Band ◽  
Exchange Interactions ◽  
Nmr Study

NMR Study of Transferred Hyperfine and Exchange Interactions in Ferromagnetic Semiconductor EuLiH3

1987 ◽  
Vol 56 (11) ◽  
pp. 4141-4149 ◽  
Author(s):  
Kenichi Kojima ◽  
Tomoyuki Imai ◽  
Koichi Hiraoka ◽  
Tadamiki Hihara ◽  
Yoshitake Kasamatsu
Keyword(s):  
Exchange Interactions ◽  
Ferromagnetic Semiconductor ◽  
Nmr Study

scholarly journals Two-dimensional semiconductors pave the way towards dopant-based quantum computing

2018 ◽  
Vol 9 ◽  
pp. 2668-2673 ◽  
Author(s):  
José Carlos Abadillo-Uriel ◽  
Belita Koiller ◽  
María José Calderón
Keyword(s):  
Conduction Band ◽  
Quantum Computer ◽  
2D Materials ◽  
Exchange Interactions ◽  
Lattice Parameter ◽  
Oscillatory Behavior ◽  
Conduction Band Edge ◽  
Two Dimensional ◽  
Tunnel Coupling ◽  
Qubit Operations

Since the proposal in 1998 to build a quantum computer using dopants in silicon as qubits, much progress has been made in the nanofabrication of semiconductors and the control of charge and spins in single dopants. However, an important problem remains unsolved, namely the control over exchange interactions and tunneling between two donors, which presents a peculiar oscillatory behavior as the dopants relative positions vary at the scale of the lattice parameter. Such behavior is due to the valley degeneracy in the conduction band of silicon, and does not occur when the conduction-band edge is at k = 0. We investigate the possibility of circumventing this problem by using two-dimensional (2D) materials as hosts. Dopants in 2D systems are more tightly bound and potentially easier to position and manipulate. Moreover, many of them present the conduction band minimum at k = 0, thus no exchange or tunnel coupling oscillations. Considering the properties of currently available 2D semiconductor materials, we access the feasibility of such a proposal in terms of quantum manipulability of isolated dopants (for single qubit operations) and dopant pairs (for two-qubit operations). Our results indicate that a wide variety of 2D materials may perform at least as well as, and possibly better, than the currently studied bulk host materials for donor qubits.

NMR Study on Hydroxy Protons of κ- and κ/μ-Hybrid Carrageenan Oligosaccharides: Experimental Evidence of Hydrogen Bonding and Chemical Exchange Interactions in κ/μ Oligosaccharides

2010 ◽  
Vol 11 (12) ◽  
pp. 3487-3494 ◽  
Author(s):  
Eric Morssing Vilén ◽  
Lena C. E. Lundqvist ◽  
Diane Jouanneau ◽  
William Helbert ◽  
Corine Sandström
Keyword(s):  
Hydrogen Bonding ◽  
Experimental Evidence ◽  
Chemical Exchange ◽  
Exchange Interactions ◽  
Nmr Study

Proton NMR Study of Random Mixture Fe1-xMnxCl2·2H2O with Competing Anisotropies and Exchange Interactions

2002 ◽  
Vol 71 (7) ◽  
pp. 1740-1745 ◽  
Author(s):  
Kazuko Zenmyo ◽  
Hidenori Kubo ◽  
Hiroyuki Deguchi ◽  
Kazuyoshi Takeda
Keyword(s):  
Proton Nmr ◽  
Exchange Interactions ◽  
Random Mixture ◽  
Nmr Study

Arylation of enelactams using TIPSOTf: reaction scope and mechanistic insight

2021 ◽  
Author(s):  
Tomasz J. Idzik ◽  
Zofia M. Myk ◽  
Łukasz Struk ◽  
Magdalena Perużyńska ◽  
Gabriela Maciejewska ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Multinuclear Nmr ◽  
Mechanistic Insight ◽  
Nmr Study ◽  
Wide Range

Triisopropylsilyltrifluoromethanesulfonate can be effectively used for the arylation of a wide range of enelactams. The multinuclear NMR study provided deep insights into the reaction mechanism.

A NMR study of human β2 microglobulin

1981 ◽  
Vol 78 ◽  
pp. 837-841 ◽  
Author(s):  
Marcel Sarrazin ◽  
Claudette Briand ◽  
Madeleine Bourdeaux ◽  
Michèle Chauvet ◽  
Claude Vincent ◽  
...  
Keyword(s):  
Β2 Microglobulin ◽  
Nmr Study
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