Fermi surface studies of the low-temperature structure of sodium

2020 ◽  
Vol 101 (22) ◽  
Author(s):  
S. F. Elatresh ◽  
Mohammad Tomal Hossain ◽  
Tushar Bhowmick ◽  
A. D. Grockowiak ◽  
Weizhao Cai ◽  
...  
Keyword(s):  
Low Temperature ◽  
Fermi Surface ◽  
Temperature Structure ◽  
Surface Studies

Fermi surface and low temperature structure in (DMET-TSeF)2Au(CN)2

2003 ◽  
Vol 135-136 ◽  
pp. 577-578 ◽  
Author(s):  
K. Kato ◽  
K. Oshima ◽  
T. Kambe ◽  
Y. Nogami ◽  
T. Sasaki ◽  
...  
Keyword(s):  
Low Temperature ◽  
Fermi Surface ◽  
Temperature Structure

scholarly journals Evidence from Fermi surface analysis for the low-temperature structure of lithium

2017 ◽  
Vol 114 (21) ◽  
pp. 5389-5394 ◽  
Author(s):  
Sabri F. Elatresh ◽  
Weizhao Cai ◽  
N. W. Ashcroft ◽  
Roald Hoffmann ◽  
Shanti Deemyad ◽  
...  
Keyword(s):  
Low Temperature ◽  
Fermi Surface ◽  
Alkali Metals ◽  
Ambient Pressure ◽  
Temperature Phase ◽  
Temperature Structure ◽  
Low Temperature Crystal Structure ◽  
Temperature Phase Transition ◽  
Low Temperature Phase

The low-temperature crystal structure of elemental lithium, the prototypical simple metal, is a several-decades-old problem. At 1 atm pressure and 298 K, Li forms a body-centered cubic lattice, which is common to all alkali metals. However, a low-temperature phase transition was experimentally detected to a structure initially identified as having the 9R stacking. This structure, proposed by Overhauser in 1984, has been questioned repeatedly but has not been confirmed. Here we present a theoretical analysis of the Fermi surface of lithium in several relevant structures. We demonstrate that experimental measurements of the Fermi surface based on the de Haas–van Alphen effect can be used as a diagnostic method to investigate the low-temperature phase diagram of lithium. This approach may overcome the limitations of X-ray and neutron diffraction techniques and makes possible, in principle, the determination of the lithium low-temperature structure (and that of other metals) at both ambient and high pressure. The theoretical results are compared with existing low-temperature ambient pressure experimental data, which are shown to be inconsistent with a 9R phase for the low-temperature structure of lithium.

scholarly journals Fermi surface studies of the topologically nontrivial compound YSi

2021 ◽  
Vol 103 (19) ◽  
Author(s):  
Vikas Saini ◽  
Souvik Sasmal ◽  
Ruta Kulkarni ◽  
Bahadur Singh ◽  
A. Thamizhavel
Keyword(s):  
Fermi Surface ◽  
Surface Studies

Low-Temperature Structure (T = 235 K) and Structural Phase Transition in [(C2H5)4N]2SnCl6

1987 ◽  
Vol 103 (1) ◽  
pp. 73-78 ◽  
Author(s):  
H. Ketata ◽  
M. H. Ben Ghozlen ◽  
A. Daoud ◽  
I. Pabst
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Temperature Structure

Single-Crystal X-Ray Scattering Study of Superstructures and Phase Transitions in Graphite-Hno3 and Graphite-Br2 Intercalation Compounds

1982 ◽  
Vol 20 ◽  
Author(s):  
R. Moret ◽  
R. Comes ◽  
G. Furdin ◽  
H. Fuzellier ◽  
F. Rousseaux
Keyword(s):  
Phase Transitions ◽  
Low Temperature ◽  
Room Temperature ◽  
Temperature Phase ◽  
Temperature Structure ◽  
X Ray ◽  
X Ray Scattering ◽  
Scattering Study ◽  
Temperature Liquid ◽  
Low Temperature Phase

ABSTRACTIn α-C5n-HNO3 the condensation of the room-temperature liquid-like diffuse ring associated with the disorder-order transition around 250 K is studied and the low-temperature. superstructure is examined.It is found that β-C8n-HNO3 exhibits an in-plane incommensurate order at room temperature.Two types of graphite-Br2 are found. Low-temperature phase transitions in C8Br are observed at T1 ≍ 277 K and T2 ≍ 297 K. The room-temperature structure of C14Br is reexamined. Special attention is given to diffuse scattering and incommensurability.

scholarly journals Low-temperature structure ofξ′-Al-Pd-Mn optimized byab initiomethods

2011 ◽  
Vol 84 (18) ◽  
Author(s):  
Benjamin Frigan ◽  
Alejandro Santana ◽  
Michael Engel ◽  
Daniel Schopf ◽  
Hans-Rainer Trebin ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Structure

The low-temperature structure of cis-cisoid-cis-perhydroanthracene, C14H24

1984 ◽  
Vol 40 (8) ◽  
pp. 1463-1465 ◽  
Author(s):  
H. van Koningsveld ◽  
J. M. A. Baas ◽  
B. van de Graaf
Keyword(s):  
Low Temperature ◽  
Temperature Structure

Fermi surface studies of tbe pressure induced organic superconductor (BEDT-TTF)/sub 3/Cl/sub 2/.2H/sub 2/O

1994 ◽  
Author(s):  
J. Caulfield ◽  
W. Lubczynski ◽  
J. Singleton ◽  
W. Hayes ◽  
M. Kurmoo ◽  
...  
Keyword(s):  
Fermi Surface ◽  
Organic Superconductor ◽  
Surface Studies
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