Setup a Hamiltonian for the Hubbard model on a Honeycomb lattice.
(3) Set local spin flag (StdIntList::locspinflag) and the number of sites (StdIntList::nsite)
(4) Compute the upper limit of the number of Transfer & Interaction and malloc them.
35 int isite, jsite, kCell, ntransMax, nintrMax;
38 std::complex<double> Cphase;
44 fp = fopen(
"lattice.gp",
"w");
48 fprintf(stdout,
" @ Lattice Size & Shape\n\n");
62 StdI->tau[0][0] = 0.0; StdI->tau[0][1] = 0.0; StdI->tau[0][2] = 0.0;
63 StdI->tau[1][0] = 1.0 / 3.0; StdI->tau[1][1] = 1.0 / 3.0; StdI->tau[1][2] = 0.0;
67 fprintf(stdout,
"\n @ Hamiltonian \n\n");
72 if (strcmp(StdI->model,
"spin") == 0 ) {
133 if (strcmp(StdI->model,
"hubbard") == 0 ) {
143 fprintf(stdout,
"\n @ Numerical conditions\n\n");
148 StdI->nsite = StdI->NsiteUC * StdI->NCell;
149 if (strcmp(StdI->model,
"kondo") == 0 ) StdI->nsite *= 2;
150 StdI->locspinflag = (
int *)malloc(
sizeof(
int) * StdI->nsite);
152 if (strcmp(StdI->model,
"spin") == 0 )
153 for (isite = 0; isite < StdI->nsite; isite++) StdI->locspinflag[isite] = StdI->S2;
154 else if (strcmp(StdI->model,
"hubbard") == 0 )
155 for (isite = 0; isite < StdI->nsite; isite++) StdI->locspinflag[isite] = 0;
157 for (iL = 0; iL < StdI->nsite / 2; iL++) {
158 StdI->locspinflag[iL] = StdI->S2;
159 StdI->locspinflag[iL + StdI->nsite / 2] = 0;
164 if (strcmp(StdI->model,
"spin") == 0 ) {
165 ntransMax = StdI->nsite * (StdI->S2 + 1 + 2 * StdI->S2);
166 nintrMax = StdI->NCell * (StdI->NsiteUC + 3 + 6 + 3)
167 * (3 * StdI->S2 + 1) * (3 * StdI->S2 + 1);
170 ntransMax = StdI->NCell * 2 * (
171 2 * StdI->NsiteUC + 6 + 12 + 6);
172 nintrMax = StdI->NCell * (StdI->NsiteUC + 4 * (3 + 6 + 3));
174 if (strcmp(StdI->model,
"kondo") == 0) {
175 ntransMax += StdI->nsite / 2 * (StdI->S2 + 1 + 2 * StdI->S2);
176 nintrMax += StdI->nsite / 2 * (3 * StdI->S2 + 1) * (3 * StdI->S2 + 1);
184 for (kCell = 0; kCell < StdI->NCell; kCell++) {
186 iW = StdI->Cell[kCell][0];
187 iL = StdI->Cell[kCell][1];
191 isite = StdI->NsiteUC * kCell;
192 if (strcmp(StdI->model,
"kondo") == 0 ) isite += 2 * StdI->NCell;
194 if (strcmp(StdI->model,
"spin") == 0 ) {
204 if (strcmp(StdI->model,
"kondo") == 0 ) {
205 jsite = StdI->NsiteUC * kCell;
215 StdFace_SetLabel(StdI, fp, iW, iL, 0, 0, 0, 1, &isite, &jsite, 1, &Cphase, dR);
217 if (strcmp(StdI->model,
"spin") == 0 ) {
227 StdFace_SetLabel(StdI, fp, iW, iL, 1, 0, 1, 0, &isite, &jsite, 1, &Cphase, dR);
229 if (strcmp(StdI->model,
"spin") == 0 ) {
239 StdFace_SetLabel(StdI, fp, iW, iL, 0, 1, 1, 0, &isite, &jsite, 1, &Cphase, dR);
241 if (strcmp(StdI->model,
"spin") == 0 ) {
251 StdFace_SetLabel(StdI, fp, iW, iL, 1, 0, 0, 0, &isite, &jsite, 2, &Cphase, dR);
253 if (strcmp(StdI->model,
"spin") == 0 ) {
263 StdFace_SetLabel(StdI, fp, iW, iL, 1, 0, 1, 1, &isite, &jsite, 2, &Cphase, dR);
265 if (strcmp(StdI->model,
"spin") == 0 ) {
275 StdFace_SetLabel(StdI, fp, iW, iL, 0, 1, 0, 0, &isite, &jsite, 2, &Cphase, dR);
277 if (strcmp(StdI->model,
"spin") == 0 ) {
287 StdFace_SetLabel(StdI, fp, iW, iL, 0, 1, 1, 1, &isite, &jsite, 2, &Cphase, dR);
289 if (strcmp(StdI->model,
"spin") == 0 ) {
299 StdFace_SetLabel(StdI, fp, iW, iL, 1, - 1, 0, 0, &isite, &jsite, 2, &Cphase, dR);
301 if (strcmp(StdI->model,
"spin") == 0 ) {
311 StdFace_SetLabel(StdI, fp, iW, iL, 1, -1, 1, 1, &isite, &jsite, 2, &Cphase, dR);
313 if (strcmp(StdI->model,
"spin") == 0 ) {
323 StdFace_SetLabel(StdI, fp, iW, iL, 1, -1, 0, 1, &isite, &jsite, 3, &Cphase, dR);
325 if (strcmp(StdI->model,
"spin") == 0) {
335 StdFace_SetLabel(StdI, fp, iW, iL, -1, -1, 0, 1, &isite, &jsite, 3, &Cphase, dR);
337 if (strcmp(StdI->model,
"spin") == 0) {
347 StdFace_SetLabel(StdI, fp, iW, iL, -1, 1, 0, 1, &isite, &jsite, 3, &Cphase, dR);
349 if (strcmp(StdI->model,
"spin") == 0) {
358 fprintf(fp,
"plot \'-\' w d lc 7\n0.0 0.0\nend\npause -1\n");
void StdFace_InputHopp(std::complex< double > t, std::complex< double > *t0, const char *t0name)
Input hopping integral from the input file, if it is not specified, use the default value(0 or the is...
void StdFace_SetLabel(struct StdIntList *StdI, FILE *fp, int iW, int iL, int diW, int diL, int isiteUC, int jsiteUC, int *isite, int *jsite, int connect, std::complex< double > *Cphase, double *dR)
Set Label in the gnuplot display (Only used in 2D system)
void StdFace_Coulomb(struct StdIntList *StdI, double V, int isite, int jsite)
Add onsite/offsite Coulomb term to the list StdIntList::Cinter and StdIntList::CinterIndx, and increase the number of them (StdIntList::NCinter).
void StdFace_GeneralJ(struct StdIntList *StdI, double J[3][3], int Si2, int Sj2, int isite, int jsite)
Treat J as a 3*3 matrix [(6S + 1)*(6S' + 1) interactions].
void StdFace_InputSpin(double Jp[3][3], double JpAll, const char *Jpname)
Input spin-spin interaction other than nearest-neighbor.
void StdFace_PrintVal_d(const char *valname, double *val, double val0)
Print a valiable (real) read from the input file if it is not specified in the input file (=NaN)...
void StdFace_Hopping(struct StdIntList *StdI, std::complex< double > trans0, int isite, int jsite, double *dR)
Add Hopping for the both spin.
void StdFace_NotUsed_c(const char *valname, std::complex< double > val)
Stop HPhi if a variable (complex) not used is specified in the input file (!=NaN).
void StdFace_HubbardLocal(struct StdIntList *StdI, double mu0, double h0, double Gamma0, double U0, int isite)
Add intra-Coulomb, magnetic field, chemical potential for the itenerant electron. ...
void StdFace_NotUsed_J(const char *valname, double JAll, double J[3][3])
Stop HPhi if variables (real) not used is specified in the input file (!=NaN).
void StdFace_MagField(struct StdIntList *StdI, int S2, double h, double Gamma, int isite)
Add longitudinal and transvars magnetic field to the list.
void StdFace_PrintGeometry(struct StdIntList *StdI)
Print geometry of sites for the pos-process of correlation function.
void StdFace_InputCoulombV(double V, double *V0, const char *V0name)
Input off-site Coulomb interaction from the input file, if it is not specified, use the default value...
void StdFace_MallocInteractions(struct StdIntList *StdI, int ntransMax, int nintrMax)
Malloc Arrays for interactions.
void StdFace_NotUsed_i(const char *valname, int val)
Stop HPhi if a variable (integer) not used is specified in the input file (!=2147483647, the upper limt of Int).
void StdFace_PrintVal_i(const char *valname, int *val, int val0)
Print a valiable (integer) read from the input file if it is not specified in the input file (=214748...
void StdFace_InitSite(struct StdIntList *StdI, FILE *fp, int dim)
Initialize the super-cell where simulation is performed.
void StdFace_InputSpinNN(double J[3][3], double JAll, double J0[3][3], double J0All, const char *J0name)
Input nearest-neighbor spin-spin interaction.
void StdFace_NotUsed_d(const char *valname, double val)
Stop HPhi if a variable (real) not used is specified in the input file (!=NaN).