[CPMD-list] About temperature and pressure
ÔÅô·É
pfyuan at ustc.edu
Wed Nov 16 07:22:45 CET 2005
Dear all:
I have run a parrinello-rahman NPT calculation in the HPUX_IA64 machine , the final result of the temperature and the pressure are convergenced to the give one. But the vibration of the two parameters are very big , for temperature it is about 26K and for pressure about 35kbar. Do someone know how to decrease the vibrations. I want the vibration can be lessen than 1K and 1kbar.
Thank you very much.
Yuan Pengfei
the inpur file is list here:
&CPMD
MOLECULAR DYNAMICS CP
RESTART WAVEFUNCTION COORDINATES
TIMESTEP 0.5 MAXSTEP 40000 SPLINE RANGE 3.0 NOSE CELL 30.0D0 120000 NOSE IONS 300.0D0 1500 PARRINELLO-RAHMAN NPT STRUCTURE BONDS STRUCTURE ANGLES &END
&DFT FUNCTIONAL BLYP&END
&SYSTEM ANGSTROM PRESSURE 100.0SYMMETRY14CELL 7.037 1.0 1.5583 0.0 0.0 -0.5 CUTOFF80.0&END
&ATOMS*C_MT_BLYP_1.psp KLEINMAN-BYLANDER LMAX=P 121.954747 -0.359930 2.170488 2.890668 0.627950 2.817350 -1.507792 1.702786 0.881039 -1.301370 2.223288 2.297061 -2.149606 -2.205727 -0.785117 -1.797468 -2.127230 0.681563 1.954747 -0.359930 7.653488 2.890668 0.627950 8.300350 -1.507792 1.702786 6.364039 -1.301370 2.223288 7.780061 -2.149606 -2.205727 4.697883 -1.797468 -2.127230 6.164563
*O_SPRIK_BLYP.psp KLEINMAN-BYLANDER LMAX=P 12 0.947259 -0.723091 2.812488 2.199202 -0.773115 1.017326 -0.650672 0.913879 0.431077 -2.529066 2.045850 0.235963 -2.056298 -1.158235 -1.457910 -2.439865 -3.326691 -1.248190 0.947259 -0.723091 8.295488 2.199202 -0.773115 6.500326 -0.650672 0.913879 5.914077 -2.529066 2.045850 5.718963 -2.056298 -1.158235 4.025090 -2.439865 -3.326691 4.234810
*N_MT_BLYP.psp KLEINMAN-BYLANDERLMAX=P6 2.685116 0.720450 4.269928 -0.873421 1.138715 3.195304 -0.390811 -1.769375 0.728740 2.685116 0.720450 9.752928 -0.873421 1.138715 8.678304 -0.390811 -1.769375 6.211740
*H_MT_BLYP.psp KLEINMAN-BYLANDERLMAX=S30 3.476329 1.135486 4.768900 1.890056 1.354134 4.395797 2.468625 -0.171189 4.707649 2.756603 1.609063 2.371401 3.878756 0.287630 2.566958 -0.541399 1.516423 4.082387 -1.559845 0.420835 3.424845 -0.109696 0.602641 2.786094 -2.200211 2.697251 2.687188 -0.531017 2.989539 2.268505 -0.031957 -1.535664 1.655901 0.195362 -2.499005 0.322463 -0.307369 -0.906107 0.193699 -1.981258 -3.073606 1.183995 -2.383603 -1.356955 1.172659 3.476329 1.135486 10.251900 1.890056 1.354134 9.878797 2.468625 -0.171189 10.190649 2.756603 1.609063 7.854401 3.878756 0.287630 8.049958 -0.541399 1.516423 9.565387 -1.559845 0.420835 8.907845 -0.109696 0.602641 8.269094 -2.200211 2.697251 8.170188 -0.531017 2.989539 7.751505 -0.031957 -1.535664 7.138901 0.195362 -2.499005 5.805463 -0.307369 -0.906107 5.676699 -1.981258 -3.073606 6.666995 -2.383603 -1.356955 6.655659&END >--USTC Alumni Email System >>>>>>--USTC Alumni Email System >>>>
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