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Correlation energy of anisotropic quantum dots

Correlation energy of anisotropic quantum dots

: ๋ณธ ๋…ผ๋ฌธ์€ ๊ณ ๋ฐ€๋„ ํ•œ๊ณ„์—์„œ์˜ ๋น„๋Œ€์นญ ์–‘์ž ์ ์˜ ์ „์ž ์ƒ๊ด€ ๊ด€๊ณ„๋ฅผ ์—ฐ๊ตฌํ•˜๋ฉฐ, ํŠนํžˆ ๋ฐฉํ–ฅ์„ฑ์— ๋”ฐ๋ฅธ ์ƒ๊ด€ ์—๋„ˆ์ง€์˜ ๋ณ€ํ™”๋ฅผ ๋ถ„์„ํ•˜๊ณ  ์žˆ๋‹ค. ์ด๋Š” ์–‘์ž ๋ฌผ๋ฆฌํ•™์—์„œ ์ค‘์š”ํ•œ ๋ฌธ์ œ ์ค‘ ํ•˜๋‚˜๋กœ, ๋‘ ์ „์ž์˜ ์ƒํ˜ธ์ž‘์šฉ๊ณผ ๊ทธ์— ๋”ฐ๋ฅธ ์‹œ์Šคํ…œ์˜ ์—๋„ˆ์ง€๋ฅผ ์ดํ•ดํ•˜๋Š” ๋ฐ ํ•ต์‹ฌ์ ์ธ ์—ญํ• ์„ ํ•œ๋‹ค. 1. ์—ฐ๊ตฌ ๋ฐฐ๊ฒฝ ๋ฐ ์ค‘์š”์„ฑ ์–‘์ž ์ ์€ ์ข…์ข… ํ•˜๋ชจ๋‹‰ ์ž ์žฌ๋ ฅ๊ณผ ์ฟ ์šธ๋กฌ ๋ฐ˜๋ฐœ๋กœ ๋ชจ๋ธ๋ง๋˜๋ฉฐ, ์ด๋Š” ์‹คํ—˜ ์กฐ๊ฑด์— ๋”ฐ๋ผ ์ „์ž๊ฐ€ 1์ฐจ์›์ ์œผ๋กœ ๊ฐ•ํ•˜๊ฒŒ ๊ตฌ๊ธˆ๋˜๋Š” ๊ฒฝ์šฐ๊ฐ€ ๋งŽ๋‹ค. ์ด๋Ÿฌํ•œ ์‹œ์Šคํ…œ์˜ ์—๋„ˆ์ง€ ๋ถ„์„์€ ๊ตํ™˜ ์ƒ๊ด€ ๋ฐ€๋„ ํ•จ์ˆ˜ ์ด๋ก (DFT) ๊ฐœ๋ฐœ์— ์ค‘์š”ํ•œ ์—ญํ• ์„ ํ•˜๋ฉฐ, ํŠนํžˆ ๊ณ ๋ฐ€๋„ ํ•œ

Physics Condensed Matter
Tight binding description of the electronic response of a molecular device to an applied voltage

Tight binding description of the electronic response of a molecular device to an applied voltage

: ๋ณธ ๋…ผ๋ฌธ์€ ๋ถ„์ž๊ฐ€ ์ „์••์— ์–ด๋–ป๊ฒŒ ๋ฐ˜์‘ํ•˜๋Š”์ง€๋ฅผ ์ดํ•ดํ•˜๊ธฐ ์œ„ํ•œ ์ผ๊ด€๋œ TB ๋ฐฉ๋ฒ•๋ก ์„ ์ œ์‹œํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค. ์ด ์—ฐ๊ตฌ๋Š” ๋ถ„์ž์˜ ์ „์ž ๊ตฌ์กฐ์™€ ์ „์••์— ๋”ฐ๋ฅธ ๋ณ€ํ™”๋ฅผ ์ •ํ™•ํ•˜๊ฒŒ ์˜ˆ์ธกํ•  ์ˆ˜ ์žˆ๋Š” ์ค‘์š”ํ•œ ๊ธฐ๋ฐ˜์„ ์ œ๊ณตํ•˜๋ฉฐ, ํŠนํžˆ ๋ถ„์ž ์žฅ์น˜์˜ I(V) ํŠน์„ฑ ์˜ˆ์ธก์—์„œ ํ™œ์šฉ ๊ฐ€๋Šฅ์„ฑ์„ ๋ณด์—ฌ์ค๋‹ˆ๋‹ค. 1. ์—ฐ๊ตฌ ๋ฐฐ๊ฒฝ ๋ฐ ๋ชฉ์  ๋ถ„์ž ์ „์ž ๊ณตํ•™์€ ๋‹จ์ผ ๋ถ„์ž์˜ ์šด๋ฐ˜ ํŠน์„ฑ์„ ์ดํ•ดํ•˜๊ณ  ์ด๋ฅผ ํ™œ์šฉํ•˜๋Š” ํ•ต์‹ฌ ๋ถ„์•ผ์ž…๋‹ˆ๋‹ค. ์ด์ „์— ์ˆ˜ํ–‰๋œ ์—ฐ๊ตฌ๋“ค์€ ์ฃผ๋กœ TB ๋˜๋Š” ๋น„์ •์•ฝ ๋ฐฉ๋ฒ•์„ ์‚ฌ์šฉํ•˜์—ฌ ๋ถ„์ž์˜ ์ „์ž ๊ตฌ์กฐ๋ฅผ ๊ณ„์‚ฐํ•˜์˜€์œผ๋‚˜, ์ด๋Ÿฌํ•œ ์ ‘๊ทผ๋ฒ•๋“ค์€ ๋ณต์žกํ•œ ์‹œ์Šคํ…œ์—์„œ์˜ ์ ์šฉ์ด ์–ด๋ ค์› ์Šต๋‹ˆ๋‹ค.

Physics

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