temperature-dependent thermal conductivity

examples/config/phase/thermal/Al.yaml

@@ -1,5 +1,11 @@
 references:
-  - https://www.engineeringtoolbox.com/thermal-conductivity-metals-d_858.html
+  - J.G. Hust and A.B. Lankford,
+    Thermal Conductivity of Aluminum, Copper, Iron, and Tungsten from 1K to the Melting Point,
+    US Department of Commerce, Boulder, Colorado, 1984,
+    fitted to Tab. 3.4.1 (RRR=1000, T_min=200K, T_max=900K)
   - https://www.engineeringtoolbox.com/specific-heat-metals-d_152.html
+K_11: 2.380e+02
+K_11,T: 2.068e-03
+K_11,T^2: -7.765e-05
+T_ref: 293.15
 C_p: 910.0
-K_11: 236.0

examples/config/phase/thermal/Cu.yaml

@@ -1,4 +1,11 @@
 references:
+  - J.G. Hust and A.B. Lankford,
+    Thermal Conductivity of Aluminum, Copper, Iron, and Tungsten from 1K to the Melting Point,
+    US Department of Commerce, Boulder, Colorado, 1984,
+    fitted to Tab. 2.4.1 (RRR=1000, T_min=200K, T_max=1000K)
   - https://www.mit.edu/~6.777/matprops/copper.htm
+K_11: 4.039e+02
+K_11,T: -8.119e-02
+K_11,T^2: 1.454e-05
+T_ref: 293.15
 C_p: 385.0
-K_11: 401.0

examples/config/phase/thermal/Fe.yaml

@@ -0,0 +1,11 @@
+references:
+  - J.G. Hust and A.B. Lankford,
+    Thermal Conductivity of Aluminum, Copper, Iron, and Tungsten from 1K to the Melting Point,
+    US Department of Commerce, Boulder, Colorado, 1984,
+    fitted to Tab. 4.4.1 (RRR=300, T_min=200K, T_max=1000K)
+  - https://www.engineeringtoolbox.com/specific-heat-metals-d_152.html
+K_11: 8.055e+01
+K_11,T: -1.051e-01
+K_11,T^2: 5.464e-05
+T_ref: 293.15
+C_p: 450.0

examples/config/phase/thermal/W.yaml

@@ -1,4 +1,11 @@
 references:
+  - J.G. Hust and A.B. Lankford,
+    Thermal Conductivity of Aluminum, Copper, Iron, and Tungsten from 1K to the Melting Point,
+    US Department of Commerce, Boulder, Colorado, 1984,
+    fitted to Tab. 5.4.1 (RRR=300, T_min=200K, T_max=1000K)
   - https://www.mit.edu/~6.777/matprops/tungsten.htm
+K_11: 1.758e+02
+K_11,T: -1.605e-01
+K_11,T^2: 1.160e-04
+T_ref: 293.15
 C_p: 132.51
-K_11: 178.0