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7 files changed, 103 insertions, 0 deletions

diff --git a/1736/CH5/EX5.1/Ch05Ex1.sce b/1736/CH5/EX5.1/Ch05Ex1.sce
new file mode 100755
index 000000000..8d5ef8083
--- /dev/null
+++ b/1736/CH5/EX5.1/Ch05Ex1.sce
@@ -0,0 +1,29 @@
+// Scilab Code Ex5.1: Page-176 (2006)

+clc; clear;

+h = 6.626e-34;  // Planck's constant, Js

+h_bar = h/(2*%pi);  // Reduced Planck's constant, Js

+e = 1.6e-019;   // Energy equivalent of 1 eV, J/eV

+m = 9.1e-031;   // Mass of an electron, kg

+

+

+// For Na

+n_Na = 2.65e+28;    // electronic concentration of Na, per metre cube

+k_F = (3*%pi^2*n_Na)^(1/3);    // Fermi wave vector, per cm

+E_F = h_bar^2*k_F^2/(2*m*e);  // Fermi energy of Na, eV

+printf("\nThe fermi energy of Na = %4.2f eV", E_F);

+printf("\nThe band structure value of Na = %4.2f eV", 0.263*13.6);

+// For K

+n_K = 1.4e+28;  // electronic concentration of K, per metre cube

+k_F = (3*%pi^2*n_K)^(1/3);    // Fermi wave vector, per cm

+E_F = h_bar^2*k_F^2/(2*m*e);  // Fermi energy of K, eV

+printf("\nThe fermi energy of K = %4.2f eV", E_F);

+printf("\nThe band structure value of K = %4.2f eV", 0.164*13.6);

+printf("\nThe agreement between the free electron and band theoretical values are fairly good both for Na and K");

+

+

+// Result

+// The fermi energy of Na = 3.25 eV

+// The band structure value of Na = 3.58 eV

+// The fermi energy of K = 2.12 eV

+// The band structure value of K = 2.23 eV

+// The agreement between the free electron and band theoretical values are fairly good both for Na and K 

diff --git a/1736/CH5/EX5.10/Ch05Ex10.sce b/1736/CH5/EX5.10/Ch05Ex10.sce
new file mode 100755
index 000000000..1db4e9115
--- /dev/null
+++ b/1736/CH5/EX5.10/Ch05Ex10.sce
@@ -0,0 +1,12 @@
+// Scilab Code Ex5.10: Page-181 (2006)

+clc; clear;

+N_Ef = 1.235;   // Density of states at fermi energy, electrons/atom-eV

+N = 6.023e+23;  // Avogadro's number

+k = 1.38e-23;   // Boltzmann constant, J/mol/K

+e = 1.6e-019;   // Charge on an electron, C

+gama = %pi^2*k^2/3*(N_Ef*N/e);   // Electronic specific heat coefficient, J/g-atom-kelvin square

+

+printf("\nThe electronic specific heat coefficient of superconductor = %5.3f mJ/g-atom-kelvin square", gama/1e-03);

+

+// Result

+// The electronic specific heat coefficient of superconductor = 2.913 mJ/g-atom-kelvin square 

diff --git a/1736/CH5/EX5.11/Ch05Ex11.sce b/1736/CH5/EX5.11/Ch05Ex11.sce
new file mode 100755
index 000000000..8564c0c35
--- /dev/null
+++ b/1736/CH5/EX5.11/Ch05Ex11.sce
@@ -0,0 +1,10 @@
+// Scilab Code Ex5.11: Page-181 (2006)

+clc; clear;

+gamma_expt = 4.84;   // Experimental value of electronic specific heat of metal, mJ/g-atom/K-square

+gamma_theory = 2.991;   // Theoretical value of electronic specific heat of metal, mJ/g-atom/K-square

+L = poly(0, 'L');

+L = roots(gamma_expt - gamma_theory*(1 + L));

+printf("\nThe electron-phonon coupling constant for metal = %5.3f", L);

+

+// Result

+// The electron-phonon coupling constant for metal = 0.618

diff --git a/1736/CH5/EX5.12/Ch05Ex12.sce b/1736/CH5/EX5.12/Ch05Ex12.sce
new file mode 100755
index 000000000..23e03fb82
--- /dev/null
+++ b/1736/CH5/EX5.12/Ch05Ex12.sce
@@ -0,0 +1,11 @@
+// Scilab Code Ex5.12: Page-181 (2006)

+clc; clear;

+mu_B = 9.24e-027; // Bohr's magneton, J/T

+N_Ef = 0.826;   // Density of states at fermi energy, electrons/atom-eV

+N = 6.023e+23;  // Avogadro's number

+e = 1.6e-019;   // Energy equivalent of 1 eV, J

+chi_Pauli = mu_B^2*N_Ef*N/e;

+printf("\nPauli spin susceptibility of Mg = %5.2e cgs units", chi_Pauli/1e-03);

+

+// Result

+// Pauli spin susceptibility of Mg = 2.65e-07 cgs units 

diff --git a/1736/CH5/EX5.3/Ch05Ex3.sce b/1736/CH5/EX5.3/Ch05Ex3.sce
new file mode 100755
index 000000000..b1bacbd2c
--- /dev/null
+++ b/1736/CH5/EX5.3/Ch05Ex3.sce
@@ -0,0 +1,8 @@
+// Scilab Code Ex5.3: Page-177 (2006)

+clc; clear;

+n_Na = 2.65e+22;    // electronic concentration of Na, per cm cube

+k_F = (3*%pi^2*n_Na)^(1/3);    // Fermi wave vector, per cm

+printf("\nThe fermi momentum of Na = %4.2e per cm", k_F);

+

+// Result

+// The fermi momentum of Na = 9.22e+07 per cm 

diff --git a/1736/CH5/EX5.5/Ch05Ex5.sce b/1736/CH5/EX5.5/Ch05Ex5.sce
new file mode 100755
index 000000000..71d30d968
--- /dev/null
+++ b/1736/CH5/EX5.5/Ch05Ex5.sce
@@ -0,0 +1,22 @@
+// Scilab Code Ex5.5: Page-177 (2006)

+clc; clear;

+h = 6.626e-34;  // Planck's constant, Js

+h_bar = h/(2*%pi);  // Reduced Planck's constant, Js

+e = 1.6e-019;   // Energy equivalent of 1 eV, J/eV

+m = 9.1e-031;   // Mass of an electron, kg

+V = 1.0e-06; // Volume of unit cube of material, metre cube

+

+// For Mg

+E_F = 7.13*e;  // Fermi energy of Mg, J

+s = 2*%pi^2/(e*V)*(h_bar^2/(2*m))^(3/2)*(E_F)^(-1/2);  // Energy separation between levels for Mg, eV

+printf("\nThe energy separation between adjacent levels for Mg = %5.3e eV", s);

+

+// For Cs

+E_F = 1.58*e;  // Fermi energy of Cs, J

+s = 2*%pi^2/(e*V)*(h_bar^2/(2*m))^(3/2)*(E_F)^(-1/2);  // Energy separation between levels for Cs, eV

+printf("\nThe energy separation between adjacent levels for Cs = %5.3e eV", s);

+

+

+// Result

+// The energy separation between adjacent levels for Mg = 5.517e-23 eV

+// The energy separation between adjacent levels for Cs = 1.172e-22 eV

diff --git a/1736/CH5/EX5.9/Ch05Ex9.sce b/1736/CH5/EX5.9/Ch05Ex9.sce
new file mode 100755
index 000000000..9d96feb2d
--- /dev/null
+++ b/1736/CH5/EX5.9/Ch05Ex9.sce
@@ -0,0 +1,11 @@
+// Scilab Code Ex5.9: Page-180 (2006)

+clc; clear;

+

+gamma_expt = 7.0e-04;   // Experimental value of electronic specific heat, cal/mol/K-square

+gamma_theory = 3.6e-04;   // Theoretical value of electronic specific heat, cal/mol/K-square

+L = poly(0, 'L');

+L = roots(gamma_expt - gamma_theory*(1 + L));

+printf("\nThe electron-phonon coupling constant of superconductor = %3.1f", L);

+

+// Result

+// The electron-phonon coupling constant of superconductor = 0.9