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xmc212

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[½»Á÷] ¡¾ÇóÖú¡¿transiestaºÍtbtransÖеĵçѹÓÐʲô²»Í¬ ÒÑÓÐ1È˲ÎÓë

siesta³ÌÐò°üÖеÄtransiestaºÍtbtrans¶¼ÓеçѹѡÏTS.Voltage

transiestaÔËÐеÄÄ¿µÄÊDzúÉúÉ¢ÉäÇøÓòµÄ.TSHSÎļþ£¬ÓÃÒÔtbtrans¼ÆËã

ÒÔÏÂÊǼÆËãµÄµçÁ÷Öµ£º
(1)transiesta TS.Voltage 0.0 eV
tbtrans TS.Voltage 0.0 eV, I= 0.0 A
tbtrans TS.Voltage 0.1 eV, I= 4.57078560E-14 A
tbtrans TS.Voltage 1.0 eV, I= 1.67146015E-09 A
(2)transiesta TS.Voltage 0.1 eV
tbtrans TS.Voltage 0.0 eV, I= 0.0 A
tbtrans TS.Voltage 0.1 eV, I= 4.56622327E-14 A
(3)transiesta TS.Voltage 1.0 eV
tbtrans TS.Voltage 0.0 eV, I= 0.0 A
tbtrans TS.Voltage 1.0 eV, I= 1.61023936E-09 A

ÎÞÂÛtransiesta¼Ó²»¼Óµçѹ£¬ÓÃtbtrans¼ÆËã³öÀ´µÄµçÁ÷Ïà²î¶¼ºÜС£¬0.1 eVµÄʱºòСÓÚ0.1%£¬1.0 eVµÄʱºòÔ¼4%

tbtransÊÇʵ¼Ê¼ÓµçѹËãµçÁ÷µÄ£¬transiesta¼ÓµçѹµÄËùÓÃÊDz»Êǵõ½ÔÚ¼ÓµçѹÇé¿öϵÄHamiltonian£¿

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vv_china

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cenwanglai(½ð±Ò+1):¹ÄÀøÐ³淢Ìù¡£Ä¾³æÆÚ´ýÄãµÄ¾«²Ê±íÏÖ£¡ 2010-08-19 13:25:07
TS.Voltage ÊǸøTBTransʹÓõIJÎÊý£¬ËüµÄÖµÓ¦¸ÃºÍtransiestaµÄ¼ÆËãûÓйØÏµ¡£Â¥Ö÷¿ÉÒÔ×Ðϸ¶Á¶ÁÈí¼þÊֲᡣ
2Â¥2010-08-19 12:12:13
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xmc212

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ллÄãµÄ»Ø´ð¡£´Ó½á¹û¿´À´£¬µçѹ¶Ôtransiesta¼ÆËãµÄÓ°ÏìȷʵºÜС£¬µ«²»ÊÇ0£¬²»ÖªµÀÊÇʲôԭÒò£¿

(1)˵Ã÷ÊéÉÏTS.VoltageÊÇtransiestaµÄÑ¡Ïî
8.7 TranSiesta Options
8.7.1 General options
SolutionMethod
TS.SaveHS
TS.Voltage
(2)Êä³öÎļþÏÔʾTS.VoltageÒ²ÊÇtransiestaµÄÑ¡Ïî
ts_read_options: TranSIESTA Voltage           =    0.1000 Volts

                     ************************  
                     *   TRANSIESTA BEGIN   *  
                     ************************  

InitMesh: MESH =    64 x   128 x    80 =      655360
InitMesh: Mesh cutoff (required, used) =   100.000   108.298 Ry

TSvoltage: Bias  0.100V
ÒýÓûØÌû:
Originally posted by vv_china at 2010-08-19 12:12:13:
TS.Voltage ÊǸøTBTransʹÓõIJÎÊý£¬ËüµÄÖµÓ¦¸ÃºÍtransiestaµÄ¼ÆËãûÓйØÏµ¡£Â¥Ö÷¿ÉÒÔ×Ðϸ¶Á¶ÁÈí¼þÊֲᡣ

3Â¥2010-08-19 15:36:59
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zhangguangping

ľ³æ (ÖøÃûдÊÖ)

¡ï ¡ï
cenwanglai(½ð±Ò+2):лл»Ø¸´£¡ 2010-08-19 17:16:24
xmc212(½ð±Ò+10): 2010-08-19 19:51:00
ÒýÓûØÌû:
Originally posted by xmc212 at 2010-08-18 05:17:21:
siesta³ÌÐò°üÖеÄtransiestaºÍtbtrans¶¼ÓеçѹѡÏTS.Voltage

transiestaÔËÐеÄÄ¿µÄÊDzúÉúÉ¢ÉäÇøÓòµÄ.TSHSÎļþ£¬ÓÃÒÔtbtrans¼ÆËã

ÒÔÏÂÊǼÆËãµÄµçÁ÷Öµ£º
(1)transiesta TS.Voltage 0.0 eV
tbtrans TS.Vo ...

²»ÖªµÀÄã¼ÆËãµÄÊÇÒ»¸öʲôÌåϵ£¬µ«ÊÇ¿ÉÒԿ϶¨µØËµ£¬transiestaµÄƫѹºÍtbtransµÄƫѹҪһÖ¡£ÔÚtransiesta¼ÆËãÖÐÊÇÓõ½TS.VoltageµÄ£¬ÖÁÓÚÓÃÀ´×öʲô£¬ÎÒ²»ºÃ˵£¬Ó¦ÎªÎÒ²»ÊǺÜÇå³þ£¬µ«ÊDz¢²»ÏóÂ¥ÉÏ˵µÄûÓйØÏµ¡£ÆðÂëHSÎļþÊÇÓëÆ«Ñ¹Óйصġ£²¢ÇÒ×óÓÒµÄGFÎļþÒ²ÊÇÆ«Ñ¹Ïà¹ØµÄ¡£Ö»ÄÜ˵£¬Äã²âÊÔµÄÄǸöÌåϵ¼ÓÉÏÆ«Ñ¹ºó£¬¶ÔtransiestaµÄ¼ÆËã½á¹ûûÓÐʲô´óµÄÓ°Ïì¡£Èç¹ûÕæµÄÊÇûÓйØÏµµÄ»°£¬Ó¦¸Ã³öÀ´µÄ½á¹ûÍêȫһÖ²ÅÊǶԵġ£ËùÒÔ»¹ÊÇÓйØÏµµÄ¡£Õâ¸ö½á¹ûÊÇÄãµÄÌåϵÔì³ÉµÄ¡£
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4Â¥2010-08-19 16:07:21
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vv_china

Í­³æ (СÓÐÃûÆø)

xmc212(½ð±Ò+10): 2010-08-19 19:51:30
Â¥ÉϱÈÎÒ¶Ôtransiesta¸üÊìϤ¡£ÎÒÖ»ÊǶÔÄãµÄ½á¹ûµÄ²Â²â£¬Ò²ÐíÆ«Ñ¹£¨¶ÔÌåϵ·ÑÃ×Äܼ¶£©µÄÓ°Ïìµ½ÁËTBTrans²Å»áÕýʽ¿¼ÂÇ¡£ÒòΪÄãµÄÄ£ÐÍ¼ÓÆ«Ñ¹ºóµÄµçÁ÷¼«Ð¡£¬½¨ÒéÄã»»¸öµ¼µçÐԺõÄÄ£ÐÍÔÙ×ö²âÊÔ¡£

ÎÒÔÚÊÖ²áÉÏÕÒµ½Ò»Ð©Ïà¹ØµÄÃèÊö£¬Äã¿ÉÒԲο¼£º
TS.TBT.HSFile (string): Scattering region .TSHS file.
Default value: SystemLabel.TSHS
respectively for the left and right electrodes and the scattering region .TSHS file.
The energy scale in tbtrans is shifted so that the Fermi level of the system, if no voltage were
applied, is zero. When computing the transmission function of a zero bias calculation, the
transmission at the Fermi level is then given by T(E=0). When there is a finite bias, the Fermi
energy of the left electrode is placed at V/2, and that of the right electrode at -V/2.
The voltage is specified by TS.Voltage.

To summarize, here we give a list of the parameters read by tbtrans from the input file (the
fdf flags):
• TS.Voltage
• kgrid Monkhorst Pack (block)
• TS.HSFileLeft¡£¡£¡£¡£
5Â¥2010-08-19 18:12:37
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zhangguangping

ľ³æ (ÖøÃûдÊÖ)

¡ï
Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
ÒýÓûØÌû:
Originally posted by xmc212 at 2010-08-18 05:17:21:
siesta³ÌÐò°üÖеÄtransiestaºÍtbtrans¶¼ÓеçѹѡÏTS.Voltage

transiestaÔËÐеÄÄ¿µÄÊDzúÉúÉ¢ÉäÇøÓòµÄ.TSHSÎļþ£¬ÓÃÒÔtbtrans¼ÆËã

ÒÔÏÂÊǼÆËãµÄµçÁ÷Öµ£º
(1)transiesta TS.Voltage 0.0 eV
tbtrans TS.Vo ...

TS.VoltageÕâ¸öÑ¡Ïî¶ÔTranSIESATAºÍSIESTAµÄ¼ÆËãÖж¼ÊÇÓÐÓõ쬾ßÌåÈçÏ£º
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ÖеÄ×óÓҵ缫µÄ»¯Ñ§ÊÆ·Ö±ðÊǵ缫µÄFermi energy¡ÀV/2ËùÒÔÕâ¸öµØ·½ÐèÒªÓõ½V,½ö´Ë¶øÒÑ¡£

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