Structure of the low-temperature phase of molybdenum (001) investigated by helium-atom scattering

1991 ◽  
Vol 43 (1) ◽  
pp. 1260-1263 ◽  
Author(s):  
E. Hulpke ◽  
D.-M. Smilgies
Keyword(s):  
Low Temperature ◽  
Helium Atom ◽  
Temperature Phase ◽  
Helium Atom Scattering ◽  
Atom Scattering ◽  
Low Temperature Phase

Structure of Kcn Monolayer Films Vapor-Deposited onto Cleaved KBr(001) by Helium Atom Diffraction

1996 ◽  
Vol 440 ◽  
Author(s):  
S. A. Safron ◽  
J. R. Baker ◽  
J. A. Lit ◽  
E. A. Akhadov ◽  
T. W. Trelenberg ◽  
...  
Keyword(s):  
Helium Atom ◽  
Temperature Phase ◽  
High Symmetry ◽  
Monolayer Films ◽  
Symmetry Direction ◽  
Helium Atom Scattering ◽  
Atom Scattering ◽  
Rocksalt Structure ◽  
High Symmetry Direction ◽  
Low Temperature Phase

AbstractAngular distribution measurements of the helium atom scattering intensity from monolayer films of KCN/KBr(001) for several azimuths over a temperature range of approximately 40–200 K reveal that above ˜95 K the KCN monolayer forms a (1×1) overlayer structure with respect to the KBr substrate. (The lattice spacing of bulk KCN in the rocksalt-structure phase differs from that of KBr by only ˜ 1%.) Below this temperature the overlayer appears to be (2×1), and “missing” diffraction spots in the <110> high symmetry direction suggest the existence of a glide plane. The inferred structure for this low temperature phase consists of K+ ions fixed in their rocksaltstructure positions relative to the substrate and the CN− ions oriented so that their dipoles are aligned antiferroelectrically within the new unit cell.

Low‐temperature phase formation in the SrF 2 ‐ LaF 3 system

2020 ◽  
Author(s):  
Pavel P. Fedorov ◽  
Alexander A. Alexandrov ◽  
Valery V. Voronov ◽  
Maria N. Mayakova ◽  
Alexander E. Baranchikov ◽  
...  
Keyword(s):  
Low Temperature ◽  
Phase Formation ◽  
Temperature Phase ◽  
Low Temperature Phase

scholarly journals Inter-adsorbate forces and coherent scattering in helium spin-echo experiments

2021 ◽  
Author(s):  
David J. Ward ◽  
Arjun Raghavan ◽  
Anton Tamtögl ◽  
Andrew P. Jardine ◽  
Emanuel Bahn ◽  
...  
Keyword(s):  
Helium Atom ◽  
Short Range ◽  
Spin Echo ◽  
Coherent Scattering ◽  
Helium Atom Scattering ◽  
Atom Scattering

Using helium atom scattering to identify adsorbate interactions and separate the effects of long and short range forces.

Unusual electronic properties of a low-temperature phase of Ag4SSe

2018 ◽  
Vol 2 (11) ◽  
Author(s):  
Shidaling Matteppanavar ◽  
Nguyen Hai An Bui ◽  
Srinivasan Ramakrishnan ◽  
Megha Vagadia ◽  
Arumugam Thamizhavel ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electronic Properties ◽  
Temperature Phase ◽  
Low Temperature Phase
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