Topics

1

General Questions and Answers / Realistic Modell?

« on: March 14, 2011, 13:31 »

Hallo everybody,

I have build a nanodevice: Au CdSe Ti. And I simulate I-V curves at first I have only a linear function as i put symmetrize I-C curves and I have a beutifull diode characteristic. But I have some questions:

1. What Im doing with symmetrize function? Is that some kind of absoltue values or signum function
2. Is there a possobility to simulate surface traps? Maybe current-time curves?
3. Is there a possibilty to look how change a current if I iluminate that with light?
4. Can ATK read mathlab scripts?
5. At last is there a possiblity to sweep a gate for such devices? I have simulate a gate like in tutorial graphene but ists dissapear if i make a device modus? Why?

P.S. last question: How much costs to update a ATK for linux cluster-PC?

Thanks for help

Best regards

IKgut

2

General Questions and Answers / Quantumtransport through CdS-Nanowire

« on: February 25, 2011, 14:02 »

Hallo, I have posted some questions in the forum and there good advices, thank you all very much....

But I have a general question. I want to build in modell a device with Schootky(Au) and Ohmic (In/Au) contact. Between them CdS Nanowire( There can beo other materials like Au or Pt for electodes). I have pricipal question: Is that poosible with ATK do buid a modell for that device and how would I do this?

P.S.: Maybe you I can tall me a bit a background for this calculation? I read some literaure from Datta to NEGF and Extend Huecke approach...Is that the way how ATK calculate electric properties like I-V-plots

Thank you very much

Ikgut

3

General Questions and Answers / CdSe-Nanowire

« on: February 22, 2011, 15:48 »

hallo

i try to build a CdSe nanowire but I have some problems. I make a repitation of my unit cell in Builder (hexagonal unit cel) and droped it  in custom builder in nanowire builder....but its have not a cylindric form....I think I doing something false...but I dont know what...can you maybe help me with an advice

Thank you

IKgut

4

General Questions and Answers / Ohmic and shottky contact or how can I make different electrodes

« on: February 22, 2011, 08:49 »

Hi all,

Im new at forum. I read all tutorials from ATK but I dont find a answer. I want to build some structure with different elektrodes In/Au and Au. One is Schottky an another is ohmic contact. I thought to set workfunktion in ATK but i dont find any possibility to do that. Between that ohmic and schottky contact I want set a graphene nanoribbon and than investigate gate and voltage depandece of i-v curves. Did somebody have an idea how i can do that?
Or maybe there is any tutorials for such device and problems?

Any advice will be great

Thank you

IKgut