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General Questions and Answers / Re: Regarding replacement of atoms of one element by another element
« on: October 2, 2013, 22:59 »
Thanks a lot for your help Sir. 
Regards,
Mayank Chakraverty.
Regards,
Mayank Chakraverty.
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General Questions and Answers / Re: Regarding replacement of atoms of one element by another element
« on: October 2, 2013, 19:35 »
Thank you Sir.
I think I will be able to work it out now. I have two more queries:
1) While working with Script Generator, the New Calculator has an option of Device Algorithm Parameters. When we open Device Algorithm Parameters, there is an option to select the device algorithm (real) as Recursion, Krylov and Direct. Will there be any difference in the I-V characteristics of the device if we use Recursion or Krylov algorithm? Which algorithm would work for a P-doped Silicon/Intrinsic Silicon/N-doped Silicon system built using the magnetic tunnel junction builder?
2) While computing the Transmission Spectrum, there is an option to select the Self Energy Calculator from Recursion, Krylov and Direct. Which of the self energy calculator would be relevant for the same P-doped Silicon/Intrinsic Silicon/N-doped Silicon system built using the magnetic tunnel junction builder?
Appreciate your help in this regard.
Regards,
Mayank Chakraverty.
I think I will be able to work it out now. I have two more queries:
1) While working with Script Generator, the New Calculator has an option of Device Algorithm Parameters. When we open Device Algorithm Parameters, there is an option to select the device algorithm (real) as Recursion, Krylov and Direct. Will there be any difference in the I-V characteristics of the device if we use Recursion or Krylov algorithm? Which algorithm would work for a P-doped Silicon/Intrinsic Silicon/N-doped Silicon system built using the magnetic tunnel junction builder?
2) While computing the Transmission Spectrum, there is an option to select the Self Energy Calculator from Recursion, Krylov and Direct. Which of the self energy calculator would be relevant for the same P-doped Silicon/Intrinsic Silicon/N-doped Silicon system built using the magnetic tunnel junction builder?
Appreciate your help in this regard.
Regards,
Mayank Chakraverty.
3
General Questions and Answers / Re: Regarding replacement of atoms of one element by another element
« on: October 2, 2013, 08:30 »
Not able to make it happen Sir.
I do it this way :
1) Open VNL and open custom builder
2) Open the Magneto Tunnel Junction builder from Custom Builder
3) In the tunnel junction builder, the electrode specifications are set. The right and left electrodes are set to be Fe while the central oxide is set to be Mg to give a Fe/MgO/Fe structure. In this step, I tried going to the right hand side of the screen where I can see the figure of the tunnel junction and shift-double click on the individual atoms but it does not work.
4) After setting all the spacing and other dimensions right, I open the script generator. I set up the calculation. In the same manner, I go to the right hand side of the screen and try to change the atoms but it does not get changed.
5) I try to do it using the Initial State but does not work that way either.
Need your help in getting this fixed. I am trying to do this using the demo version. Is there any restriction in the demo version that I cannot carry out this kind of replacement? Please help.
Regards,
Mayank.
I do it this way :
1) Open VNL and open custom builder
2) Open the Magneto Tunnel Junction builder from Custom Builder
3) In the tunnel junction builder, the electrode specifications are set. The right and left electrodes are set to be Fe while the central oxide is set to be Mg to give a Fe/MgO/Fe structure. In this step, I tried going to the right hand side of the screen where I can see the figure of the tunnel junction and shift-double click on the individual atoms but it does not work.
4) After setting all the spacing and other dimensions right, I open the script generator. I set up the calculation. In the same manner, I go to the right hand side of the screen and try to change the atoms but it does not get changed.
5) I try to do it using the Initial State but does not work that way either.
Need your help in getting this fixed. I am trying to do this using the demo version. Is there any restriction in the demo version that I cannot carry out this kind of replacement? Please help.
Regards,
Mayank.
4
General Questions and Answers / Re: Regarding replacement of atoms of one element by another element
« on: October 1, 2013, 21:45 »
Yes, I am trying to do the replacement of atoms using 12.8.2, the current version.
5
General Questions and Answers / Re: Regarding replacement of atoms of one element by another element
« on: October 1, 2013, 21:16 »
Dear Sir,
I tried holding down the shift button and double clicking the atom to be replaced. It is not working. Can you please suggest another means by which I can change the atom with the atom of another element? Your help in this regard would be really helpful.
Regards,
Mayank Chakraverty.
I tried holding down the shift button and double clicking the atom to be replaced. It is not working. Can you please suggest another means by which I can change the atom with the atom of another element? Your help in this regard would be really helpful.
Regards,
Mayank Chakraverty.
6
General Questions and Answers / Regarding replacement of atoms of one element by another element
« on: September 30, 2013, 08:25 »
Dear Sir,
I am working with magnetic tunnel junction builder (Fe/MgO/Fe). As per my design requirement, I have to replace the oxygen atoms in the central region with Magnesium atoms manually to make the central region be made up of Magnesium alone. Can you please help me in identifying how to replace one atom by another? Appreciate your help.
Regards,
Mayank Chakraverty.
I am working with magnetic tunnel junction builder (Fe/MgO/Fe). As per my design requirement, I have to replace the oxygen atoms in the central region with Magnesium atoms manually to make the central region be made up of Magnesium alone. Can you please help me in identifying how to replace one atom by another? Appreciate your help.
Regards,
Mayank Chakraverty.
7
General Questions and Answers / Re: query regarding MTJ (magnetic tunnel junction)
« on: March 11, 2011, 21:03 »
So you mean to say that those parameters may vary from one experiment to another..???That means they are not constants..?? 
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General Questions and Answers / query regarding bandstructure simulation
« on: March 11, 2011, 21:00 »
By using the magnetic tunnel junction builder, i have made a Ni/Al2O3/Ni tunnel junction. There are two cases. As the two Fe layers can have either parallel spin or anti parallel spin alignment, I have simulated Ni(up spin)/Al2O3/Ni(up spin) and then Ni(up spin)/Al2O3/Ni(down spin) separately. I have obtained two separate band structures for the two sets of simulations. How do I identify in the band structure obtained that which region is for Ni(up spin), which region is for Al2O3 and which region is for Ni(up spin)/Ni(down spin)..??
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General Questions and Answers / query regarding MTJ (magnetic tunnel junction)
« on: March 11, 2011, 20:40 »
In the magneto tunnel junction builder, there is an option to specify the layer separation of the barrier (central region). How do we set the layer separation value..?? On what grounds do we set the value of layer separation for any material..?? Also, there is an option to select the electrode/oxygen distance. How do we know what values will be most apt..?? Kindly let me know..
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General Questions and Answers / Re: query regarding mtj
« on: March 11, 2011, 20:38 »
In the magneto tunnel junction builder, there is an option to specify the layer separation of the barrier (central region). How do we set the layer separation value..?? On what grounds do we set the value of layer separation for any material..?? Also, there is an option to select the electrode/oxygen distance. How do we know what values will be most apt..?? Kindly let me know..
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