TY - JOUR
T1 - Boson peak in deeply cooled confined water
T2 - A possible way to explore the existence of the liquid-to-liquid transition in water
AU - Wang, Zhe
AU - Liu, Kao Hsiang
AU - Le, Peisi
AU - Li, Mingda
AU - Chiang, Wei Shan
AU - Leão, Juscelino B.
AU - Copley, John R.
AU - Tyagi, Madhusudan
AU - Podlesnyak, Andrey
AU - Kolesnikov, Alexander I.
AU - Mou, Chung Yuan
AU - Chen, Sow Hsin
PY - 2014/6/12
Y1 - 2014/6/12
N2 - The boson peak in deeply cooled water confined in nanopores is studied with inelastic neutron scattering. We show that in the (P, T) plane, the locus of the emergence of the boson peak is nearly parallel to the Widom line below ∼1600bar. Above 1600 bar, the situation is different and from this difference the end pressure of the Widom line is estimated. The frequency and width of the boson peak correlate with the density of water, which suggests a method to distinguish the hypothetical "low-density liquid" and "high-density liquid" phases in deeply cooled water.
AB - The boson peak in deeply cooled water confined in nanopores is studied with inelastic neutron scattering. We show that in the (P, T) plane, the locus of the emergence of the boson peak is nearly parallel to the Widom line below ∼1600bar. Above 1600 bar, the situation is different and from this difference the end pressure of the Widom line is estimated. The frequency and width of the boson peak correlate with the density of water, which suggests a method to distinguish the hypothetical "low-density liquid" and "high-density liquid" phases in deeply cooled water.
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U2 - 10.1103/PhysRevLett.112.237802
DO - 10.1103/PhysRevLett.112.237802
M3 - Article
C2 - 24972226
AN - SCOPUS:84902436296
SN - 0031-9007
VL - 112
JO - Physical Review Letters
JF - Physical Review Letters
IS - 23
M1 - 237802
ER -