EPJ Web of Conferences
14
, 02001 (2011)
DOI: 10.1051/epjconf/20111402001
© Owned by the authors, published by EDP Sciences, 2011
“ Fundamentals of Thermodynamic Modelling
of Materials ”
November 15-19, 2010
INSTN – CEA Saclay, France
Organized by
Bo SUNDMAN
[email protected]
Constantin MEIS
[email protected]
PROFESSOR & TOPIC
Stefano BARONI
SISSA, Trieste, Italy
Thermodynamics from
lattice dynamics with DFT
$) *4<0$+%$"&(*0(+%$*%(4
%('0) <(#%$ "0"+%$)
*$%(%$
" "$%
#!
!#
Sunday, November 14, 2010
*'0) <(#%$ &&(%3 #+%$
F
(
V, T, λ
) =
⎧
⎪
⎪
⎪
⎪
⎪
⎨
⎪
⎪
⎪
⎪
⎪
⎩
−k
B
T
log
e
−
vλ(R)
kBT
dR
−k
B
T
log
n
*'0) <(#%$ &&(%3 #+%$
U
(
S, V, λ
)
=
F
+
T S
G
(
T, p, λ
)
=
F
+
pV
. . .
F
(
V, T, λ
) =
⎧
⎪
⎪
⎪
⎪
⎪
⎨
⎪
⎪
⎪
⎪
⎪
⎩
−k
B
T
log
e
−
vλ(R)
kBT
dR
−k
B
T
log
n
e
−
EnkBT(V,λ)Sunday, November 14, 2010
*'0) <(#%$ &&(%3 #+%$
U
(
S, V, λ
)
=
F
+
T S
G
(
T, p, λ
)
=
F
+
pV
. . .
C
V
=
−T
∂
2
F
∂T
2
V
C
p
=
−T
∂
2
G
∂T
2
p
B
T
=
V
∂
2
F
∂V
2
T
B
S
=
V
∂
2
U
∂V
2
S
. . .
F
(
V, T, λ
) =
⎧
⎪
⎪
⎪
⎪
⎪
⎨
⎪
⎪
⎪
⎪
⎪
⎩
−k
B
T
log
e
−
vλ(R)
kBT
dR
−k
B
T
log
n
*'0) <(#%$ &&(%3 #+%$
U
(
S, V, λ
)
=
F
+
T S
G
(
T, p, λ
)
=
F
+
pV
. . .
C
V
=
−T
∂
2
F
∂T
2
V
C
p
=
−T
∂
2
G
∂T
2
p
B
T
=
V
∂
2
F
∂V
2
T
B
S
=
V
∂
2
U
∂V
2
S
. . .
F
(
V, T, λ
) =
U
0
(
V, λ
) +
1
2
q
ν
ω
(
q, ν
|
V, λ
) +
k
B
T
q
ν
log
1
−
e
−
ω(qkBT,ν|V,λ)F
(
V, T, λ
) =
⎧
⎪
⎪
⎪
⎪
⎪
⎨
⎪
⎪
⎪
⎪
⎪
⎩
−k
B
T
log
e
−
vλ(R)
kBT
dR
−k
B
T
log
n
e
−
EnkBT(V,λ)Sunday, November 14, 2010
24 $ +%
24 $ +%
0$)"
((&(%0 "
(("1$*
$0(*
)
) $+ $) *)*#)(%#* " *4*%3*(&%"*%0(0$()*$ $
(%#) #&"#%")*%1(4%#&"3&4) "2%("
$%3*(&%"+%$ )&%)) " %0(!$%2"%*#%") )
Sunday, November 14, 2010
24 $ +%
0$)"
((&(%0 "
(("1$*
$0(*
)
) $+ $) *)*#)(%#* " *4*%3*(&%"*%0(0$()*$ $
(%#) #&"#%")*%1(4%#&"3&4) "2%("
$%3*(&%"+%$ )&%)) " %0(!$%2"%*#%") )
0(
4
)
)# #& ( "
24 $ +%
0$)"
((&(%0 "
(("1$*
$0(*
)
) $+ $) *)*#)(%#* " *4*%3*(&%"*%0(0$()*$ $
(%#) #&"#%")*%1(4%#&"3&4) "2%("
$%3*(&%"+%$ )&%)) " %0(!$%2"%*#%") )
#0#%()%2$*3*(&%"+%$ #&" )
(#+$)%&4) "%$ +%$)
=*#&(*0(8&())0(8*%# %%( $+%$:::>
0(
4
)
)# #& ( "
#%")
Sunday, November 14, 2010
$) *40$+%$"*%(4
E
(
R
) = min
{
ψ
}
$) *40$+%$"*%(4
E
[
{
ψ
}
,
R
] =
−
2
2
m
v
ψ
∗
v
(
r
)
∂
2
ψ
v
(
r
)
∂
r
2
dr
+
V
(
r
,
R
)
ρ
(
r
)
d
r
+
e
2
2
ρ
(
r
)
ρ
(
r
)
|
r
−
r
|
d
r
d
r
+
E
xc
[
ρ
]
E
(
R
) = min
{
ψ
}
E
[
{
ψ
}
,
R
]
ρ
(
r
) =
v
|
ψ
v
(
r
)
|
2
ψ
∗
u
(
r
)
ψ
v
(
r
)
d
r
=
δ
uv
Sunday, November 14, 2010
$) *40$+%$"*%(4
E
[
{
ψ
}
,
R
] =
−
2
2
m
v
ψ
∗
v
(
r
)
∂
2
ψ
v
(
r
)
∂
r
2
dr
+
V
(
r
,
R
)
ρ
(
r
)
d
r
+
e
2
2
ρ
(
r
)
ρ
(
r
)
|
r
−
r
|
d
r
d
r
+
E
xc
[
ρ
]
E
(
R
) = min
{
ψ
}
E
[
{
ψ
}
,
R
]
ρ
(
r
) =
v
|
ψ
v
(
r
)
|
2
ψ
∗
u
(
r
)
ψ
v
(
r
)
d
r
=
δ
uv
δE
KS
δψ
∗
v
(
r
)
=
uv
Λ
vu
ψ
u
(
r
)
−
2
2
m
∇
2
+
v
KS
[
ρ
](
r
)
$) *40$+%$"*%(4
E
[
{
ψ
}
,
R
] =
−
2
2
m
v
ψ
∗
v
(
r
)
∂
2
ψ
v
(
r
)
∂
r
2
dr
+
V
(
r
,
R
)
ρ
(
r
)
d
r
+
e
2
2
ρ
(
r
)
ρ
(
r
)
|
r
−
r
|
d
r
d
r
+
E
xc
[
ρ
]
E
(
R
) = min
{
ψ
}
E
[
{
ψ
}
,
R
]
ρ
(
r
) =
v
|
ψ
v
(
r
)
|
2
ψ
∗
u
(
r
)
ψ
v
(
r
)
d
r
=
δ
uv
δE
KS
δψ
∗
v
(
r
)
=
uv
Λ
vu
ψ
u
(
r
)
−
2
2
m
∇
2
+
v
KS
[
ρ
](
r
)
ψ
v
(
r
) =
v
ψ
v
(
r
)
v
KS
[
ρ
](
r
) =
V
(
r
,
R
) +
e
2
ρ
(
r
)
|
r
−
r
|
d
r
+
v
XC
[
ρ
](
r
)
Sunday, November 14, 2010
".4$# )(%#&(*0(+%$*%(4
R’
R
V
(
r
)
=
V
0
(
r
)
+
R
u
(
R
)
·
∂v
(
r
−
R
)
∂
R
E
=
E
0
+
1
2
R
,
R
u
(
R
)
·
∂
2
E
".4$# )(%#&(*0(+%$*%(4
u(R)
u(R’)
R’
R
V
(
r
)
=
V
0
(
r
)
+
R
u
(
R
)
·
∂v
(
r
−
R
)
∂
R
E
=
E
0
+
1
2
R
,
R
u
(
R
)
·
∂
2
E
∂
u
(
R
)
∂
u
(
R
)
·
u
(
R
)
+
· · ·
Sunday, November 14, 2010
".4$# )(%#&(*0(+%$*%(4
u(R)
u(R’)
R’
R
V
(
r
)
=
V
0
(
r
)
+
R
u
(
R
)
·
∂v
(
r
−
R
)
∂
R
E
=
E
0
+
1
2
R
,
R
u
(
R
)
·
∂
2
E
∂
u
(
R
)
∂
u
(
R
)
·
u
(
R
)
+
· · ·
det
∂
2
E
∂u
(
R
)
∂u
(
R
)
−
ω
2
M
(
R
)
δR
,
R
V
(
r
) =
V
0
(
r
) +
i
u
i
V
i
(
r
)
$) *4<0$+%$"&(*0(+%$*%(4
Sunday, November 14, 2010
V
(
r
) =
V
0
(
r
) +
i
u
i
V
i
(
r
)
$) *4<0$+%$"&(*0(+%$*%(4
E
(u) = min
n
F
[
n
] +
V
u
(r)
n
(r)
V
(
r
) =
V
0
(
r
) +
i
u
i
V
i
(
r
)
$) *4<0$+%$"&(*0(+%$*%(4
∂E
(u)
∂u
i
=
n
u
(r)
V
i
(r)
d
r
E
(u) = min
n
F
[
n
] +
V
u
(r)
n
(r)
n
(
r
)
d
r
=
N
Sunday, November 14, 2010
V
(
r
) =
V
0
(
r
) +
i
u
i
V
i
(
r
)
$) *4<0$+%$"&(*0(+%$*%(4
∂E
(u)
∂u
i
=
n
u
(r)
V
i
(r)
d
r
E
(u) = min
n
F
[
n
] +
V
u
(r)
n
(r)
n
(
r
)
d
r
=
N
∂
2
E
(
u
)
∂u
i
∂u
j
=
∂n
u
(
r
)
∂u
j
V
V
(
r
) =
V
0
(
r
) +
i
u
i
V
i
(
r
)
$) *4<0$+%$"&(*0(+%$*%(4
∂E
(u)
∂u
i
=
n
u
(r)
V
i
(r)
d
r
E
(u) = min
n
F
[
n
] +
V
u
(r)
n
(r)
n
(
r
)
d
r
=
N
∂
2
E
(
u
)
∂ui
∂uj
=
∂n
u
(
r
)
∂uj
V
i
(
r
)
d
r
" $(()&%$) )$7
Sunday, November 14, 2010
"0"+$*()&%$)
n
(
r
) =
v
|
φ
v
(
r
)
|
2
n
(
r
) = 2Re
v
φ
v
=
c
φ
◦
c
φ
◦
c
|
V
|
φ
◦
v
◦
v
−
◦
c
n
(
r
) = 2Re
v
φ
◦∗
v
(
r
)
φ
v
(
r
)
= 2Re
cv
ρ
vc
φ
◦∗
v
(
r
)
φ
◦
c
(
r
)
"0"+$*()&%$)
n
(
r
) =
v
|
φ
v
(
r
)
|
2
n
(
r
) = 2Re
v
φ
◦∗
v
(
r
)
φ
v
(
r
)
Sunday, November 14, 2010
φ
v
=
c
φ
◦
c
φ
◦
c
|
V
|
φ
◦
v
◦
v
−
◦
c
n
(
r
) = 2Re
v
φ
◦∗
v
(
r
)
φ
v
(
r
)
= 2Re
cv
ρ
vc
φ
◦∗
v
(
r
)
φ
◦
c
(
r
)
"0"+$*()&%$)
n
(
r
) =
v
|
φ
v
(
r
)
|
2
n
(
r
) = 2Re
v
φ
◦∗
v
(
r
)
φ
v
(
r
)
"0"+$*()&%$)
n
(
r
) = 2Re
v
φ
◦∗
v
(
r
)
φ
v
(
r
)
(
H
◦
−
◦
v
)
φ
v
=
−
P
c
V
φ
◦
v
Sunday, November 14, 2010
V
0
(
r
)
n
(
r
)
9*'0+%$)
−
Δ +
V
SCF
(
r
)
φ
v
(
r
) =
v
φ
v
(
r
)
n
(
r
) =
v<E
F|
φ
v
(
r
)
|
2
V
SCF
(
r
) =
V
0
(
r
) +
n
(
r
)
V
0
(
r
)
n
(
r
)
9*'0+%$)
V
(
r
)
n
(
r
)
V
SCF
(
r
) =
V
(
r
) +
n
(
r
)
|
r
−
r
|
dr
+
μ
xc
(
r
)
n
(
r
) = 2 Re
v<E
Fφ
∗
v
(
r
)
φ
v
(
r
)
−
Δ +
V
SCF
(
r
)
φ
v
(
r
) =
v
φ
v
(
r
)
n
(
r
) =
v<E
F|
φ
v
(
r
)
|
2
V
SCF
(
r
) =
V
0
(
r
) +
n
(
r
)
|
r
−
r
|
dr
+
μ
xc
(
r
)
−
Δ +
V
SCF
(
r
)
−
v
φ
v
(
r
) =
P
c
V
SCF
(
r
)
φ
v
(
r
)
7
9
""#337
"
9
'(
7
2'9
/
9
+9
!$
7
DKID=DLKJ>
Sunday, November 14, 2010
monochromatic perturbations
x
2
π
q
V
q
(
x
)
monochromatic perturbations
x
2
π
q
V
q
(
x
)
H
0
−
k
v
φ
v
k
+
q
(r) =
−
P
c
V
q
φ
k
v
(r)
Sunday, November 14, 2010
monochromatic perturbations
n
q
(
r
) = e
i
q
·
r
v,
k
u
v
k
∗
(
r
)
u
k
v
+
q
(
r
)
x
2
π
q
V
q
(
x
)
monochromatic perturbations
n
q
(
r
) = e
i
q
·
r
v,
k
u
v
k
∗
(
r
)
u
k
v
+
q
(
r
)
V
q
(
r
) =
V
ext
q
(
r
) +
e
2
|
r
−
r
|
+
κ
xc
(
r
,
r
)
n
q
(
r
)
d
r
x
2
π
q
V
q
(
x
)
H
0
−
k
v
φ
v
k
+
q
(r) =
−
P
c
V
q
φ
k
v
(r)
Sunday, November 14, 2010
&%$%$) $&%"(#*( ")
E
(u
,
E
) =
1
2
Mω
0
2
u
2
−
Ω
&%$%$) $&%"(#*( ")
E
(u
,
E
) =
1
2
Mω
0
2
u
2
−
Ω
8
π
∞
E
2
−
eZ
∗
u
·
E
F
≡ −
∂E
∂
u
=
−
Mω
0
2
u
+
Z
∗
E
D
≡ −
4
π
Ω
∂E
∂
E
=
4
π
Ω
Z
∗
u
+
∞
E
Sunday, November 14, 2010
&%$%$) $&%"(#*( ")
E
(u
,
E
) =
1
2
Mω
0
2
u
2
−
Ω
8
π
∞
E
2
−
eZ
∗
u
·
E
F
≡ −
∂E
∂
u
=
−
Mω
0
2
u
+
Z
∗
E
D
≡ −
4
π
Ω
∂E
∂
E
=
4
π
Ω
Z
∗
u
+
∞
E
&%$%$) $&%"(#*( ")
E
(u
,
E
) =
1
2
Mω
0
2
u
2
−
Ω
8
π
∞
E
2
−
eZ
∗
u
·
E
F
≡ −
∂E
∂
u
=
−
Mω
0
2
u
+
Z
∗
E
D
≡ −
4
π
Ω
∂E
∂
E
=
4
π
Ω
Z
∗
u
+
∞
E
rot
E
∼
i
q
×
E
= 0
u
⊥
q
⇒
E
= 0
=>
Sunday, November 14, 2010
&%$%$) $&%"(#*( ")
E
(u
,
E
) =
1
2
Mω
0
2
u
2
−
Ω
8
π
∞
E
2
−
eZ
∗
u
·
E
F
≡ −
∂E
∂
u
=
−
Mω
0
2
u
+
Z
∗
E
D
≡ −
4
π
Ω
∂E
∂
E
=
4
π
Ω
Z
∗
u
+
∞
E
rot
E
∼
i
q
×
E
= 0
div
D
∼
i
q
·
D
= 0
&%$%$) $&%"(#*( ")
E
(u
,
E
) =
1
2
Mω
0
2
u
2
−
Ω
8
π
∞
E
2
−
eZ
∗
u
·
E
F
≡ −
∂E
∂
u
=
−
Mω
0
2
u
+
Z
∗
E
D
≡ −
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E
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Z
∗
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E
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E
∼
i
q
×
E
= 0
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D
∼
i
q
·
D
= 0
u
⊥
q
⇒
E
= 0
=>
u
q
⇒
D
= 0
=>
Sunday, November 14, 2010
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E
(u
,
E
) =
1
2
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2
u
2
−
Ω
8
π
∞
E
2
−
eZ
∗
u
·
E
F
≡ −
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u
=
−
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0
2
u
+
Z
∗
E
D
≡ −
4
π
Ω
∂E
∂
E
=
4
π
Ω
Z
∗
u
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∞
E
rot
E
∼
i
q
×
E
= 0
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D
∼
i
q
·
D
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u
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q
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E
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=>
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q
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q
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T
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u
F
L
=
−
M
ω
0
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+
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πZ
∗
M
Ω
∞
u
Sunday, November 14, 2010
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αβ
st
(
R
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R
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E
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s
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R
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β
t
(
R
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e
i
q
·
(
R
−
R
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D
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st
(
q
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d
q
D
st
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(
q
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¯
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(
q
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Z
s
Z
t
q
α
q
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β
t
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R
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(2
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e
i
q
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R
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(
q
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q
D
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q
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st
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q
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Z
s
Z
t
q
α
q
β
q
2
Sunday, November 14, 2010
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t
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R
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i
q
·
(
R
−
R
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q
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q
D
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q
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q
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Z
s
Z
t
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R
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e
i
q
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(
R
−
R
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(
q
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d
q
D
st
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(
q
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¯
st
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(
q
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Z
s
Z
t
q
α
q
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q
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q
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First-Principles Calculation of Vibrational Raman Spectra in Large Systems:
Signature of Small Rings in Crystalline
SiO
2Michele Lazzeri and Francesco Mauri
P H Y S I C A L
R E V I E W
L E T T E R S
week ending 24 JANUARY 2003V
OLUME90, N
UMBER3
)#&"(%($*&&" +%$)
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Experim. TheoryIntensity (arbitrary units)
Cristobalite
0
200
400
600
800
1000
1200
Raman shift (cm
-1)
Coesite
Intensity
200 300 400 500 600 Raman shift (cm-1)
Vitr.-SiO2 Coesite
520 cm -1
D1
490 cm -1
D2
605 cm-1
Intensity
200 300 400 500 600 Raman shift (cm-1)
Vitr.-SiO2 ZSM-18 Zeolite
485 cm -1
D
1
490 cm -1
D2
605 cm -1 615
cm-1
Sunday, November 14, 2010
)#&"(%($*&&" +%$)
Vibrational Recognition of Adsorption Sites for CO on
Platinum and Platinum
-
Ruthenium Surfaces
Ismaila Dabo,*,†Andrzej Wieckowski,‡and Nicola Marzari†
Published on Web 08/17/2007
11046 J. AM. CHEM. SOC.9VOL. 129, NO. 36, 2007
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Dissociation of MgSiO
3
in the Cores of
Gas Giants and Terrestrial Exoplanets
Koichiro Umemoto,
1Renata M. Wentzcovitch,
1* Philip B. Allen
2983
www.sciencemag.org SCIENCE VOL 311 17 FEBRUARY 2006Sunday, November 14, 2010
)#&"(%($*&&" +%$)
Ab Initio
Description of High-Temperature Superconductivity in Dense Molecular Hydrogen
P. Cudazzo,
1G. Profeta,
1A. Sanna,
2,3A. Floris,
3A. Continenza,
1S. Massidda,
2and E. K. U. Gross
3 1CNISM - Dipartimento di Fisica, Universita` degli Studi dell’Aquila, Via Vetoio 10, I-67010 Coppito (L’Aquila) Italy2SLACS-INFM/CNR —Dipartimento di Fisica, Universita` degli Studi di Cagliari, I-09124 Monserrato (CA), Italy 3Institut fu¨r Theoretische Physik, Freie Universita¨t Berlin, Arnimallee 14, D-14195 Berlin, Germany
(Received 7 December 2007; published 23 June 2008; corrected 27 June 2008)
PRL
100,
257001 (2008)
P H Y S I C A L
R E V I E W
L E T T E R S
27 JUNE 2008week ending0 1200 2400 3600
ω (
cm
-1)
Z Γ Σ Y Γ S R Z T
0 1000 2000 3000 4000
ω (cm-1
) 0
0.2 0.4 0.6 0.8
α
2F(
ω) 420 440P ( GPa )460 1
1.5 2 2.5
λ
10 15 20
(meV) 300
)#&"(%($*&&" +%$)
Ab Initio
Description of High-Temperature Superconductivity in Dense Molecular Hydrogen
P. Cudazzo,
1G. Profeta,
1A. Sanna,
2,3A. Floris,
3A. Continenza,
1S. Massidda,
2and E. K. U. Gross
31CNISM - Dipartimento di Fisica, Universita` degli Studi dell’Aquila, Via Vetoio 10, I-67010 Coppito (L’Aquila) Italy 2SLACS-INFM/CNR —Dipartimento di Fisica, Universita` degli Studi di Cagliari, I-09124 Monserrato (CA), Italy
3Institut fu¨r Theoretische Physik, Freie Universita¨t Berlin, Arnimallee 14, D-14195 Berlin, Germany
(Received 7 December 2007; published 23 June 2008; corrected 27 June 2008)
PRL
100,
257001 (2008)
P H Y S I C A L
R E V I E W
L E T T E R S
27 JUNE 2008week ending0 1200 2400 3600 ω ( cm -1)
Z Γ Σ Y Γ S R Z T
0 1000 2000 3000 4000
ω(cm-1)
0 0.2 0.4 0.6 0.8 α 2F ( ω
) 420 440 460 P ( GPa ) 1
1.5 2 2.5 λ
0 20 40 60 80 T(K) 0 5 10 15 20 Δnk (meV)k
425P (GPa)450 75 150 225 300 Tc ( K )
G
D
G
Sunday, November 14, 2010
P
(
V, T
) =
−
∂F
∂V
=
−
∂U
0
∂V
+
1
V
q
ν
ω
(
q, ν
)
γ
(
q, ν
)
1
2
+
e
ω(q, kBTP
(
V, T
) =
−
∂F
∂V
=
−
∂U
0
∂V
+
1
V
q
ν
ω
(
q, ν
)
γ
(
q, ν
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1
2
+
e
ω(q,ν)1
kBT
−
1
*(#"3&$) %$
Sunday, November 14, 2010
P
(
V, T
) =
−
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=
−
∂U
0
∂V
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1
V
q
ν
ω
(
q, ν
)
γ
(
q
, ν
)
1
2
+
1
e
ω(kBTq,ν)−
1
−
V
ω
(
q
, ν
)
∂ω
(
q
, ν
)
∂V
P
(
V, T
) =
−
∂F
∂V
=
−
∂U
0
∂V
+
1
V
q
ν
ω
(
q, ν
)
γ
(
q
, ν
)
1
2
+
1
e
ω(kBTq,ν)−
1
−
V
ω
(
q
, ν
)
∂ω
(
q
, ν
)
∂V
*(#"3&$) %$
β
=
V
−1
∂V
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P
=
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V
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∂P/∂T
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V
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)
T
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T
q
ν
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(
q, ν
)
γ
(
q, ν
)
n
(
q, ν
)
,
Sunday, November 14, 2010
P
(
V, T
) =
−
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=
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0
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V
q
ν
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(
q, ν
)
γ
(
q
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)
1
2
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e
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q
, ν
)
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q
, ν
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∂V
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P
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V
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V
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∂P/∂V
)
T
=
1
B
T
q
ν
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Sunday, November 14, 2010
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phase
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T
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Sunday, November 14, 2010
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λ
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g
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p, T
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)
G
A
(
p, T
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G
B
(
p, T
)
phase
A
phase
B
T
p
g
(
p, T
|λ
) =
f
(
V, T
|λ
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pV
G
A/B
(
p, T
) = min
λ
A/B
g
A/B
(
p, T
|λ
A/B
)
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A
(
p, T
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B
(
p, T
)
phase
A
phase
B
T
p
&)%0$( )
Sunday, November 14, 2010
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Sunday, November 14, 2010
&)%0$( ) $
*(#%<")+&(%&(+)
C
ij,kl
T
(
p, T
) =
1
V
∂
2
G
∂
ij
∂
kl
Sunday, November 14, 2010
*(#%<")+&(%&(+)
C
ij,kl
T
(
p, T
) =
1
V
∂
2
G
∂ij
∂kl
C
S
=
C
T
+
T
c
V
∂S
∂
ij
*(#%<")+&(%&(+)
G
(
p, T
|
) =
F
(
V, T
|
) +
pV
C
ij,kl
T
(
p, T
) =
1
V
∂
2
G
∂
ij
∂
kl
C
S
=
C
T
+
T
cV
∂S
∂ij
∂S
∂kl
Sunday, November 14, 2010
*(#%<")+&(%&(+)
G
(
p, T
|
) =
F
(
V, T
|
) +
pV
F
=
F
(
V, T
|
ij
) = min
λ
f
(
V,
ij
, T
|
ij
, λ
)
p
=
−
∂F
∂V
C
ij,kl
T
(
p, T
) =
1
V
∂
2
G
∂ij
∂kl
C
S
=
C
T
+
T
c
V
∂S
∂
ij
*(#%<")+&(%&(+)
G
(
p, T
|
) =
F
(
V, T
|
) +
pV
F
=
F
(
V, T
|ij
) = min
λ
f
(
V, ij
, T
|ij
, λ
)
p
=
−
∂F
∂V
C
ij,kl
T
(
p, T
) =
1
V
∂
2
G
∂
ij
∂
kl
C
S
=
C
T
+
T
cV
∂S
∂ij
∂S
∂kl
f
(
V, T
|, λ
) =
U0
(
V
|, λ
) +
1
2
q
ν
ω
(
q
, ν|V, , λ
)
+
k
B
T
q
ν
log
1
−
e
−
ω
(
q
kBT
,ν
|
V,,λ
)
Sunday, November 14, 2010
*(#%")+&(%&(+)
0
50
100
150
P (GPa)
0
200
400
600
800
1000
1200
1400
Elastic Moduli (GPa)
300 K 1000 K 2000 K 3000 K 4000 K
0
50
100
150
P (GPa)
0
50
100
150
P (GPa)
C11
C22 C33
C12
C13 C23
C44 C55 C66
F
Sunday, November 14, 2010