Matias URDAMPILLETA - TEL
Matias URDAMPILLETA - TEL Matias URDAMPILLETA - TEL
tel-00770488, version 1 - 7 Jan 2013 (a) (b) (c) |+6› |-6› |-5› ħω ħω2 ħω3 ħω4 ħω5 |+6› |-6› ω 1 =ω 3 -ω 2 |+6› |-6› état virtuel ω 1 =ω 5 -ω 4 2 1 τ 1 τ = ω1→2 + ω2→1 = Bρph ω 1 + exp kBT ω ρph(ω) = 2π 2 v 3 l exp ω 3 ω kBT vl 1 τ ω3 = B 2π2v3 ω coth l 2kBT − 1
tel-00770488, version 1 - 7 Jan 2013 V = V0 + εV1 + ε 2 V2... ε B = π 2ρv2 V l 2 1 ρ 1 3 2 = V τ 2πρv5 1 ω 3 ω coth 2kBT 2 ω |mJ = +6〉 |mJ = −6〉 ω = gµB∆mJµ0Hz = αHz 1 τ = 3 22 2 V πρv5 1 (αHz) 3 coth αHz 2kBT 1 3 2 = V τ 2πρv5 1 ∆ 3 1 exp (∆/kBT ) − 1 ∆ ∆ 1 9(6!) = τ 4π3ρ2 7 2 kBT V v10 2
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tel-00770488, version 1 - 7 Jan 2013<br />
<br />
(a) (b) (c)<br />
|+6›<br />
|-6›<br />
|-5›<br />
ħω ħω2 ħω3 ħω4 ħω5 |+6›<br />
|-6›<br />
ω 1 =ω 3 -ω 2<br />
|+6›<br />
|-6›<br />
état virtuel<br />
ω 1 =ω 5 -ω 4<br />
2 <br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
<br />
1<br />
τ<br />
1<br />
τ = ω1→2 + ω2→1<br />
= Bρph<br />
<br />
ω<br />
1 + exp<br />
kBT<br />
<br />
<br />
ω <br />
<br />
ρph(ω) =<br />
2π 2 v 3 l<br />
<br />
exp<br />
ω 3<br />
ω<br />
kBT<br />
vl <br />
1<br />
τ<br />
<br />
ω3<br />
= B<br />
2π2v3 <br />
ω<br />
coth<br />
l 2kBT<br />
<br />
− 1
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