{"id":11438,"date":"2026-01-05T18:28:49","date_gmt":"2026-01-05T09:28:49","guid":{"rendered":"https:\/\/physics.gist.ac.kr\/?post_type=research_news&p=11438"},"modified":"2026-01-05T18:41:28","modified_gmt":"2026-01-05T09:41:28","slug":"%ea%b9%80%eb%af%bc%ec%84%ad-%eb%b0%95%ec%82%ac-%ec%9d%b4%ec%a2%85%ec%84%9d-%ea%b5%90%ec%88%98-gist-%ea%b2%bd%ed%9d%ac%eb%8c%80-%eb%a6%ac%ed%94%84%ec%8b%9c%ec%b8%a0-%ec%83%81%ec%a0%84%ec%9d%b4","status":"publish","type":"research_news","link":"https:\/\/physics.gist.ac.kr\/en\/news-events\/research_highlights_news\/%ea%b9%80%eb%af%bc%ec%84%ad-%eb%b0%95%ec%82%ac-%ec%9d%b4%ec%a2%85%ec%84%9d-%ea%b5%90%ec%88%98-gist-%ea%b2%bd%ed%9d%ac%eb%8c%80-%eb%a6%ac%ed%94%84%ec%8b%9c%ec%b8%a0-%ec%83%81%ec%a0%84%ec%9d%b4\/","title":{"rendered":"[\uae40\ubbfc\uc12d \ubc15\uc0ac, \uc774\uc885\uc11d \uad50\uc218] GIST-\uacbd\ud76c\ub300, ‘\ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774’ \uc6d0\ub9ac \uc704\uc0c1\ubc18\uae09\uc18d\uc5d0\uc11c \uc138\uacc4 \ucd5c\ucd08 \uc2e4\ud5d8 \uaddc\uba85"},"content":{"rendered":"\n

\uc804\uc790\uad6c\uc870 \ubcc0\ud654 \uc9c1\uc811 \ud3ec\ucc29\uc73c\ub85c \ucc28\uc138\ub300 \uc591\uc790\uc18c\uc7ac \uc124\uacc4 \uae30\ubc18 \ub9c8\ub828<\/h2>\n\n\n\n
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– GIST-\uacbd\ud76c\ub300 \uacf5\ub3d9\uc5f0\uad6c\uc9c4, \uc704\uc0c1\ubc18\uae08\uc18d \ubc15\ub9c9 \ub450\uaed8 \uc81c\uc5b4 \ud1b5\ud574 \uc804\uc790\uad6c\uc870\uc758 \uc704\uc0c1 \ubcc0\ud654 \uc9c1\uc811 \uad00\uce21\u2026 \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218\uac00 \ucd5c\uc18c\uac12\uae4c\uc9c0 \uac10\uc18c\ud55c \ub4a4 \ub2e4\uc2dc \uc99d\uac00\ud558\ub294 \ubcc0\ud654 \ud1b5\ud574 \ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774 \uc2e4\ud5d8 \uc785\uc99d<\/h2>\n<\/div>\n<\/div>\n\n\n\n

– \uc591\uc790\uc18c\uc7ac \uc804\uc790\uad6c\uc870 \uce21\uc815\u00b7\uc9c4\ub2e8\uc758 \uc0c8\ub85c\uc6b4 \uc2e4\ud5d8 \ud328\ub7ec\ub2e4\uc784 \uc81c\uc2dc\u2026 \uad6d\uc81c\ud559\uc220\uc9c0\u300aMaterials Today Physics\u300b\uac8c\uc7ac<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u25b2 (\uc67c\ucabd\ubd80\ud130) GIST \ubb3c\ub9ac\u00b7\uad11\uacfc\ud559\uacfc \uc774\uc885\uc11d \uad50\uc218, \uae40\ubbfc\uc12d \ubc15\uc0ac<\/strong><\/p>\n\n\n\n

\uad11\uc8fc\uacfc\ud559\uae30\uc220\uc6d0(GIST, \ucd1d\uc7a5 \uc784\uae30\ucca0)\uc740 \ubb3c\ub9ac\u00b7\uad11\uacfc\ud559\uacfc \uc774\uc885\uc11d \uad50\uc218 \uc5f0\uad6c\ud300\uc774 \uacbd\ud76c\ub300\ud559\uad50 \ucd5c\uc11d\ud638 \uace0\ud669\uba85\uc608\uad50\uc218 \uc5f0\uad6c\ud300\uacfc\uc758 \uacf5\ub3d9 \uc5f0\uad6c\ub97c \ud1b5\ud574, \uc804\uc790\uac00 \uc9c8\ub7c9\uc774 \uc5c6\ub294 \uc785\uc790\ucc98\ub7fc \ub9e4\uc6b0 \ube60\ub974\uac8c \uc6c0\uc9c1\uc774\ub294 \ud2b9\uc774\ud55c \uc804\uc790 \uad6c\uc870\ub97c \uac00\uc9c4 \ubb3c\uc9c8\uc778 \u2018\uc704\uc0c1\ubc18\uae08\uc18d\u2019\uc5d0\uc11c \ubc1c\uc0dd\ud558\ub294 \u2018\ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774(Lifshitz transition)\u2019\uc758 \ubb3c\ub9ac\uc801 \uc6d0\ub9ac\ub97c \uc138\uacc4 \ucd5c\ucd08\ub85c \uc2e4\ud5d8\uc801\uc73c\ub85c \uaddc\uba85<\/strong>\ud588\ub2e4\uace0 \ubc1d\ud614\ub2e4.<\/p>\n\n\n\n

\ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774\ub294 \uc804\uc790 \ub760 \uad6c\uc870 \ubcc0\ud654\ub85c \uc778\ud574 \ud398\ub974\ubbf8 \ud45c\uba74\uc758 \uc704\uc0c1\uc774 \ubc14\ub00c\ub294 \uc591\uc790 \uc0c1\uc804\uc774 \ud604\uc0c1<\/strong>\uc73c\ub85c, \uadf8\ub3d9\uc548 \uc774\ub860\uc801\uc73c\ub85c\ub9cc \uc608\uce21\ub3fc \uc654\uc73c\ub098 \uc2e4\uc81c \ubb3c\uc9c8\uc5d0\uc11c \uc774\ub97c \uc9c1\uc811 \uad00\uce21\ud558\uae30\ub294 \ub9e4\uc6b0 \uc5b4\ub824\uc6e0\ub2e4.<\/strong><\/p>\n\n\n\n

\uc774\ubc88 \uc5f0\uad6c\ub294 \uc804\uc790\uc758 \uc9d1\ub2e8\uc801 \uac70\ub3d9\uc744 \ubc18\uc601\ud558\ub294 \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218(plasma frequency)\ub97c \ud575\uc2ec \uc9c0\ud45c\ub85c \ud65c\uc6a9\ud574 \uc774 \ud604\uc0c1\uc744 \uc2e4\ud5d8\uc801\uc73c\ub85c \uc785\uc99d\ud55c \uc131\uacfc<\/strong>\ub85c\uc11c, \uc591\uc790\uc18c\uc7ac \uc5f0\uad6c\uc5d0 \uc0c8\ub85c\uc6b4 \uce21\uc815 \ud328\ub7ec\ub2e4\uc784\uc744 \uc81c\uc2dc\ud588\ub2e4\ub294 \uc810\uc5d0\uc11c \uc758\ubbf8<\/strong>\uac00 \ud06c\ub2e4.<\/p>\n\n\n\n

\uc5f0\uad6c\ud300\uc740 \uc704\uc0c1\ubc18\uae08\uc18d \ud2b9\uc131\uc744 \uc9c0\ub2cc \u2018\ube44\uc2a4\ubb34\ud2b8\u2013\uc548\ud2f0\ubaac \ud569\uae08 \ubc15\ub9c9(Bi\u2080.\u2089\u2086Sb\u2080.\u20804<\/sub> \ubc15\ub9c9)*<\/sup>\u2019\uc758 \ub450\uaed8\ub97c \ub098\ub178\ubbf8\ud130(nm) \ub2e8\uc704\ub85c \uc815\ubc00\ud558\uac8c \uc81c\uc5b4\ud558\uba74\uc11c, \uc804\uc790\uc758 \uc9d1\ub2e8\uc801 \uac70\ub3d9\uc744 \ubc18\uc601\ud558\ub294 \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218 \ubcc0\ud654\ub97c \ud14c\ub77c\ud5e4\ub974\uce20(THz) \ub300\uc5ed \uad11\ud559 \uce21\uc815\uc744 \ud1b5\ud574 \ubd84\uc11d<\/strong>\ud588\ub2e4.<\/p>\n\n\n\n

\uadf8 \uacb0\uacfc, \ubc15\ub9c9 \ub450\uaed8 \uc57d 10 \ub098\ub178\ubbf8\ud130(nm\u00b71\u339a\ub294 10\uc5b5\ubd84\uc758 1m)\ub97c \uae30\uc900\uc73c\ub85c \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218\uac00 \uae09\uaca9\ud788 \ubcc0\ud654\ud558\uba70, \uc804\uc790 \uad6c\uc870\uc758 \uc704\uc0c1\uc774 \uae09\uaca9\ud788 \uc804\ud658\ub418\ub294 \uc784\uacc4 \ud604\uc0c1\uc744 \uc9c1\uc811 \uad00\uce21\ud558\ub294 \ub370 \uc131\uacf5<\/strong>\ud588\ub2e4.<\/p>\n\n\n\n

\uc774\ub294 \uc804\uc790 \uad6c\uc870\uc758 \uc5f0\uc18d\uc801\uc778 \ubcc0\ud654 \uc18d\uc5d0\uc11c \uc704\uc0c1\uc801 \uc131\uc9c8\uc774 \uadfc\ubcf8\uc801\uc73c\ub85c \ubc14\ub00c\ub294 \uc21c\uac04\uc744 \uc2e4\ud5d8\uc73c\ub85c \ud3ec\ucc29\ud55c \uac83\uc73c\ub85c \ud574\uc11d<\/strong>\ub41c\ub2e4.<\/p>\n\n\n\n

* \ube44\uc2a4\ubb34\ud2b8\u2013\uc548\ud2f0\ubaa8\ub2c8 \ud569\uae08 \ubc15\ub9c9(Bi\u2080.\u2089\u2086Sb\u2080.\u20804<\/sub> \ubc15\ub9c9):<\/strong> \ube44\uc2a4\ubb34\ud2b8(Bi)\uc5d0 \uc548\ud2f0\ubaa8\ub2c8(Sb)\ub97c \uc57d 4% \ud63c\ud569\ud55c \ud569\uae08 \ubb3c\uc9c8\uc744 \ub098\ub178\ubbf8\ud130 \ub450\uaed8\ub85c \uc131\uc7a5\uc2dc\ud0a8 \uc587\uc740 \ub9c9 \ud615\ud0dc\uc758 \uc2dc\ub8cc\ub85c, \ub300\ud45c\uc801\uc778 \uc704\uc0c1\ubc18\uae08\uc18d \uc18c\uc7ac\ub85c \uc54c\ub824\uc838 \uc788\ub2e4. \uc774 \uc870\uc131\uc5d0\uc11c\ub294 \uc804\ub3c4\ub300\uc640 \uac00\uc804\uc790\ub300\uac00 \ub9de\ub2ff\uc740 \ub514\ub77d \ubc18\uae08\uc18d \uc804\uc790\uad6c\uc870\uac00 \ud615\uc131\ub418\uba70, \ubc15\ub9c9\uc758 \ub450\uaed8\ub098 \ubcc0\ud615 \uc870\uac74\uc5d0 \ub530\ub77c \uc804\uc790\uc758 \uac70\ub3d9\uacfc \uc704\uc0c1\uc801 \ud2b9\uc131\uc774 \ubbfc\uac10\ud558\uac8c \ubcc0\ud55c\ub2e4. \uc774\ub7ec\ud55c \ud2b9\uc131 \ub355\ubd84\uc5d0 Bi\u2080.\u2089\u2086Sb\u2080.\u2080\u2084\ubc15\ub9c9\uc740 \uc704\uc0c1 \uc0c1\uc804\uc774, \ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774, \ucc28\uc6d0 \ud6a8\uacfc \ub4f1 \uc591\uc790\ud604\uc0c1\uc744 \uc5f0\uad6c\ud558\ub294 \ud575\uc2ec \uc2e4\ud5d8 \ud50c\ub7ab\ud3fc\uc73c\ub85c \ud65c\uc6a9\ub41c\ub2e4.<\/p>\n\n\n\n

\u2018\uc704\uc0c1\ubc18\uae08\uc18d\u2019\uc740 \uc804\ub3c4\ub300\uc640 \uac00\uc804\uc790\ub300*<\/sup>\uac00 \ud2b9\uc815 \uc9c0\uc810\uc774\ub098 \uc120\uc5d0\uc11c \ub9cc\ub098\uba70, \uc774 \uad50\ucc28 \uad6c\uc870\uac00 \ubb3c\uc9c8\uc758 \ub300\uce6d\uc131\uc5d0 \uc758\ud574 \uc548\uc815\uc801\uc73c\ub85c \ubcf4\ud638\ub418\ub294 \ub3c5\ud2b9\ud55c \uc804\uc790\uad6c\uc870\ub97c \uc9c0\ub2cc \uc591\uc790\uc18c\uc7ac<\/strong>\ub2e4. \uc774\ub85c \uc778\ud574 \uc804\uc790\ub294 \uc9c8\ub7c9\uc774 \uc5c6\ub294 \ub514\ub77d(Dirac) \ub610\ub294 \uc6e8\uc77c(Weyl) \ud398\ub974\ubbf8\uc628\ucc98\ub7fc \uac70\ub3d9\ud574, \uae30\uc874 \uae08\uc18d\uc774\ub098 \ubc18\ub3c4\uccb4\uc640\ub294 \ub2e4\ub978 \ud2b9\uc774\ud55c \ubb3c\ub9ac\uc801 \ud2b9\uc131<\/strong>\uc744 \ub098\ud0c0\ub0b8\ub2e4.<\/p>\n\n\n\n

\ub514\ub77d(Dirac) \ub610\ub294 \uc6e8\uc77c(Weyl) \ud398\ub974\ubbf8\uc628\uc740 \uc704\uc0c1\ubc18\uae08\uc18d\uc5d0\uc11c \ub9c8\uce58 \uc0c8\ub85c\uc6b4 \uc785\uc790\ucc98\ub7fc \uac70\ub3d9\ud558\ub294 \uc0c1\ud0dc\ub85c, \ube5b\uacfc \uac19\uc740 \uace0\uc18d \uc785\uc790\uc758 \ubb3c\ub9ac \ubc95\uce59\uc744 \ub530\ub974\ub294 \uac83\uc774 \ud2b9\uc9d5<\/strong>\uc774\ub2e4. \ub514\ub77d \ud398\ub974\ubbf8\uc628\uc740 \uc804\uc790 \uad6c\uc870\uac00 \ud558\ub098\ub85c \uc720\uc9c0\ub41c \uc0c1\ud0dc\uc5d0\uc11c \ub098\ud0c0\ub098\ub294 \uc804\uc790 \uc0c1\ud0dc\uc774\uba70, \uc6e8\uc77c \ud398\ub974\ubbf8\uc628\uc740 \uc774 \uad6c\uc870\uac00 \uae68\uc9c0\uba74\uc11c \uc804\uc790\uac00 \u2018\uc67c\uc190\u00b7\uc624\ub978\uc190\u2019\ucc98\ub7fc \uc11c\ub85c \ub2e4\ub978 \uc131\uc9c8\uc744 \uc9c0\ub2cc \ub450 \uc0c1\ud0dc\ub85c \ub098\ub258\ub294 \uacbd\uc6b0(\uc190\uc7a1\uc774\uc131\u00b7\uce74\uc774\ub7f4\ub9ac\ud2f0(chirality))\ub97c \uc758\ubbf8\ud55c\ub2e4.<\/p>\n\n\n\n

\uc774\ub7ec\ud55c \ud2b9\uc131\uc73c\ub85c \uc704\uc0c1\ubc18\uae08\uc18d\uc740 \ucd08\uace0\uc18d\u00b7\uc800\uc804\ub825 \uc804\uc790\uc18c\uc790, \uc2a4\ud540\ud2b8\ub85c\ub2c9\uc2a4, \uc591\uc790\ucef4\ud4e8\ud305 \ub4f1 \ucc28\uc138\ub300 \uae30\uc220\uc744 \uad6c\ud604\ud560 \ud575\uc2ec \uc18c\uc7ac\ub85c \uc8fc\ubaa9<\/strong>\ubc1b\uace0 \uc788\ub2e4.<\/p>\n\n\n\n

* \uc804\ub3c4\ub300\uc640 \uac00\uc804\uc790\ub300<\/strong>:\u3000\uc804\ub3c4\ub300\ub294 \uc804\uc790\uac00 \uc790\uc720\ub86d\uac8c \uc774\ub3d9\ud560 \uc218 \uc788\uc5b4 \uc804\uae30 \uc804\ub3c4\ub97c \ub2f4\ub2f9\ud558\ub294 \uc5d0\ub108\uc9c0 \ub760\uc774\uba70, \uac00\uc804\uc790\ub300\ub294 \uc804\uc790\uac00 \uc6d0\uc790\uc5d0 \ubb36\uc5ec \ube44\uad50\uc801 \uc548\uc815\uc801\uc73c\ub85c \uc874\uc7ac\ud558\ub294 \uc5d0\ub108\uc9c0 \ub760\ub97c \ub9d0\ud55c\ub2e4. \ub450 \ub760 \uc0ac\uc774\uc758 \uad00\uacc4\uc5d0 \ub530\ub77c \ubb3c\uc9c8\uc740 \uae08\uc18d, \ubc18\ub3c4\uccb4, \uc808\uc5f0\uccb4 \ub610\ub294 \uc704\uc0c1\ubb3c\uc9c8\ub85c \uad6c\ubd84\ub418\uba70, \uc704\uc0c1\ubc18\uae08\uc18d\uc5d0\uc11c\ub294 \uc804\ub3c4\ub300\uc640 \uac00\uc804\uc790\ub300\uac00 \ud2b9\uc815 \uc9c0\uc810\uc774\ub098 \uc120\uc5d0\uc11c \ub9de\ub2ff\uc544 \ub3c5\ud2b9\ud55c \uc804\uc790\uc801 \uc131\uc9c8\uc744 \ub098\ud0c0\ub0b8\ub2e4.<\/p>\n\n\n\n

\u2018\ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774\u2019\ub294 \ubb3c\uc9c8\uc758 \uacb0\uc815 \uad6c\uc870\ub098 \ub300\uce6d\uc131 \ubcc0\ud654 \uc5c6\uc774\ub3c4, \uc804\uc790 \ub760 \uad6c\uc870 \ubcc0\ud654\ub85c \uc778\ud574 \ud398\ub974\ubbf8 \ud45c\uba74\uc758 \u2018\uc704\uc0c1(topology)*<\/sup>\u2019\uc774 \ubc14\ub00c\ub294 \uc591\uc790 \uc0c1\uc804\uc774 \ud604\uc0c1<\/strong>\uc774\ub2e4. \uc774 \ud604\uc0c1\uc740 \uc704\uc0c1\ubb3c\uc9c8\uacfc \ucd08\uc804\ub3c4\uccb4, \uc790\uc131\uccb4\ub294 \ubb3c\ub860 \uace0\uc5d0\ub108\uc9c0 \ubb3c\ub9ac\uc640 \uc6b0\uc8fc \ubb3c\ub9ac \ubd84\uc57c\uae4c\uc9c0 \ud3ed\ub113\uac8c \uc5f0\uacb0\ub418\ub294 \ud575\uc2ec \uac1c\ub150<\/strong>\uc774\ub2e4.<\/p>\n\n\n\n

\uadf8\ub3d9\uc548 \uc774\ub860\uc801\uc73c\ub85c\ub294 \uc804\uc790 \ub18d\ub3c4\uc758 \uae09\uaca9\ud55c \ubcc0\ud654\uc640 \ud568\uaed8 \uc784\uacc4 \uc9c0\uc810\uc5d0\uc11c \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218\uac00 \ucd5c\uc18c\uac12\uc744 \uac00\uc9c8 \uac83\uc774\ub77c\ub294 \uc608\uce21\uc774 \uc81c\uc2dc<\/strong>\ub3fc \uc654\uc73c\ub098, \uc2e4\uc81c \ubb3c\uc9c8\uc5d0\uc11c \uc774\ub97c \uc9c1\uc811 \ud655\uc778\ud558\ub294 \ub370\uc5d0\ub294 \ud55c\uacc4<\/strong>\uac00 \uc788\uc5c8\ub2e4.<\/p>\n\n\n\n

* \uc704\uc0c1(topology)<\/strong>: \ubb3c\uccb4\uc758 \ud06c\uae30\ub098 \ud615\ud0dc\uac00 \uc870\uae08 \ubcc0\ud574\ub3c4 \uc27d\uac8c \ubc14\ub00c\uc9c0 \uc54a\ub294 \ubcf8\uc9c8\uc801\uc778 \uad6c\uc870\uc801 \uc131\uc9c8\uc744 \uc758\ubbf8\ud558\ub294 \uac1c\ub150\uc774\ub2e4. \ubb3c\ub9ac\ud559\uc5d0\uc11c\ub294 \uc804\uc790 \uc5d0\ub108\uc9c0 \ub760\uc758 \uc5f0\uacb0 \ubc29\uc2dd\uc774\ub098 \uad50\ucc28 \uad6c\uc870\ucc98\ub7fc, \uc678\ubd80 \uc790\uadf9\uc774\ub098 \uc5f0\uc18d\uc801\uc778 \ubcc0\ud615\uc5d0\ub3c4 \uc720\uc9c0\ub418\ub294 \uc804\uc790\uad6c\uc870\uc758 \ud2b9\uc131\uc744 \uac00\ub9ac\ud0a8\ub2e4. \uc774\ub7ec\ud55c \uc704\uc0c1\uc801 \uc131\uc9c8\uc740 \ubb3c\uc9c8\uc758 \ub300\uce6d\uc131\uacfc \uacb0\ud569\ub3fc \ub3c5\ud2b9\ud55c \uc804\uc790 \uc0c1\ud0dc\ub97c \ub9cc\ub4e4\uc5b4\ub0b4\uba70, \uc704\uc0c1\ubc18\uae08\uc18d\u00b7\uc704\uc0c1\uc808\uc5f0\uccb4\uc640 \uac19\uc740 \uc704\uc0c1\ubb3c\uc9c8\uc5d0\uc11c \ub098\ud0c0\ub098\ub294 \ud2b9\uc774\ud55c \ubb3c\ub9ac \ud604\uc0c1\uc758 \uadfc\ubcf8 \uc6d0\ub9ac\uac00 \ub41c\ub2e4.<\/p>\n\n\n\n

\uc5f0\uad6c\ud300\uc740 \ubd84\uc790\ube54 \uc5d0\ud53c\ud0dd\uc2dc(MBE) \uae30\uc220*<\/sup>\uc744 \uc774\uc6a9\ud574 \uac08\ub968\ube44\uc18c(GaAs) \uae30\ud310 \uc704\uc5d0 \ub450\uaed8 3~300nm \ubc94\uc704\uc758 \ube44\uc2a4\ubb34\ud2b8\u2013\uc548\ud2f0\ubaa8\ub2c8 \ud569\uae08 \ubc15\ub9c9\uc744 \uc6d0\uc790\uce35 \ub2e8\uc704\ub85c \uc131\uc7a5<\/strong>\uc2dc\ucf30\ub2e4.<\/p>\n\n\n\n

\uc774\ud6c4 \ub098\uc120\ud615 \uc758\uc874\uc131 \ud14c\ub77c\ud5e4\ub974\uce20 \ubc29\ucd9c \ubd84\uad11\ubc95, \ud22c\uacfc\ud615 \ud14c\ub77c\ud5e4\ub974\uce20 \uc2dc\ubd84\ud574 \ubd84\uad11\ubc95 \ub4f1 \ud14c\ub77c\ud5e4\ub974\uce20(THz) \ub300\uc5ed \uad11\ud559 \uce21\uc815 \uae30\ubc95\uc744 \ud65c\uc6a9\ud574 \uc790\uc720\uc804\uc790\uc758 \ub3d9\uc5ed\ud559\uacfc \uad11\ud559 \uc804\ub3c4\ub3c4\ub97c \uc815\ubc00 \uce21\uc815<\/strong>\ud588\ub2e4.<\/p>\n\n\n\n

* \ubd84\uc790\ube54 \uc5d0\ud53c\ud0dd\uc2dc(Molecular Beam Epitaxy, MBE) \uae30\uc220:<\/strong> \ucd08\uace0\uc9c4\uacf5 \ud658\uacbd\uc5d0\uc11c \uc6d0\uc18c\ub97c \ubd84\uc790 \ub610\ub294 \uc6d0\uc790 \ube54 \ud615\ud0dc\ub85c \uae30\ud310\uc5d0 \uacf5\uae09\ud574, \uc6d0\uc790\uce35 \ub2e8\uc704\ub85c \ubb3c\uc9c8\uc744 \ud55c \uce35\uc529 \uc815\ubc00\ud558\uac8c \uc131\uc7a5\uc2dc\ud0a4\ub294 \ubc15\ub9c9 \uc131\uc7a5 \uae30\uc220\uc774\ub2e4. \uac01 \uc6d0\uc18c\uc758 \uacf5\uae09\ub7c9\uacfc \uc131\uc7a5 \uc18d\ub3c4\ub97c \uc815\ubc00\ud558\uac8c \uc81c\uc5b4\ud560 \uc218 \uc788\uc5b4 \uc870\uc131, \ub450\uaed8, \uacb0\uc815 \uad6c\uc870\ub97c \uc6d0\uc790 \uc218\uc900\uc5d0\uc11c \uc870\uc808\ud560 \uc218 \uc788\uc73c\uba70, \ubd88\uc21c\ubb3c\uc774 \uac70\uc758 \uc5c6\ub294 \uace0\ud488\uc9c8 \ub2e8\uacb0\uc815 \ubc15\ub9c9\uc744 \uc81c\uc791\ud560 \uc218 \uc788\ub2e4\ub294 \uc7a5\uc810\uc774 \uc788\ub2e4. \uc774 \ub54c\ubb38\uc5d0 \ubc18\ub3c4\uccb4, \uc704\uc0c1\ubb3c\uc9c8, \uc591\uc790\uc18c\uc7ac \ub4f1 \uae30\ucd08 \ubb3c\uc131 \uc5f0\uad6c\uc640 \ucc28\uc138\ub300 \uc804\uc790\u00b7\uad11\uc18c\uc790 \uac1c\ubc1c\uc5d0 \ub110\ub9ac \ud65c\uc6a9\ub41c\ub2e4.<\/p>\n\n\n\n

\uadf8 \uacb0\uacfc, \ubc15\ub9c9 \ub450\uaed8\uac00 \uc57d 10nm \uc774\ud558\ub85c \uac10\uc18c\ud560 \ub54c, \uc6d0\ud615 \ud3b8\uad11\uc758 \ubc29\ud5a5(\uc67c\ucabd\u00b7\uc624\ub978\ucabd)\uc5d0 \ub530\ub77c \ubc29\ucd9c\ub418\ub294 \ud14c\ub77c\ud5e4\ub974\uce20\ud30c\uc758 \uc138\uae30\uac00 \ub2ec\ub77c\uc9c0\ub294 \u2018\uc6d0\ud615 \uad11\uc804 \ud6a8\uacfc*<\/sup>\u2019<\/strong>\uac00 \ub098\ud0c0\ub0ac\ub2e4.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u25b2 \ub450\uaed8\uc5d0 \ub530\ub978 \ud14c\ub77c\ud5e4\ub974\uce20 \ub300\uc5ed \uad11\uc804\ub3c4\ub3c4 \uc2a4\ud399\ud2b8\ub7fc(\uc704)\uacfc \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218\uc758 \ubcc0\ud654(\uc544\ub798) \uce21\uc815\uc744 \ud1b5\ud55c \ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774\uc758 \uc6d0\ub9ac\uc5d0 \ub300\ud55c \uc2e4\ud5d8\uc801 \uaddc\uba85.<\/strong> \uc784\uacc4 \ub450\uaed8\uc778 10 nm \uc5d0\uc11c \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218\uac00 \ucd5c\uc800\uc810\uc5d0 \ub3c4\ub2ec\ud568.<\/p>\n\n\n\n

\uc774\ub294 \ub514\ub77d \ubc18\uae08\uc18d \uc0c1\ud0dc\uac00 \uc6e8\uc77c \ubc18\uae08\uc18d \uc0c1\ud0dc*<\/sup>\ub85c \uc804\ud658\ub410\uc74c\uc744 \ubcf4\uc5ec\uc8fc\ub294 \uba85\ud655\ud55c \uc704\uc0c1\uc801 \uc2e0\ud638\ub85c \ud574\uc11d<\/strong>\ub41c\ub2e4.<\/p>\n\n\n\n

* \uc6d0\ud615 \uad11\uc804 \ud6a8\uacfc(Circular Photogalvanic Effect, CPGE):<\/strong> \ubb3c\uc9c8\uc5d0 \uc6d0\ud615 \ud3b8\uad11\ub41c \ube5b\uc744 \uc870\uc0ac\ud588\uc744 \ub54c, \ube5b\uc758 \ud68c\uc804 \ubc29\ud5a5(\uc67c\ucabd\u00b7\uc624\ub978\ucabd)\uc5d0 \ub530\ub77c \uc804\ub958\uc758 \ud06c\uae30\ub098 \ubc29\ud5a5\uc774 \ub2ec\ub77c\uc9c0\ub294 \ud604\uc0c1\uc744 \ub9d0\ud55c\ub2e4. \uc774\ub294 \uc804\uc790\uc758 \uc2a4\ud540\uacfc \uc6b4\ub3d9\uc774 \uac15\ud558\uac8c \uacb0\ud569\ub41c \ube44\ub300\uce6d \uc804\uc790\uad6c\uc870\uc5d0\uc11c \ub098\ud0c0\ub098\ub294 \ud6a8\uacfc\ub85c, \ud2b9\ud788 \ubc18\uc804 \ub300\uce6d\uc131\uc774 \uae68\uc9c4 \uc6e8\uc77c \ubc18\uae08\uc18d\uc5d0\uc11c \ub300\ud45c\uc801\uc778 \ud2b9\uc131 \uc2e0\ud638\ub85c \uc54c\ub824\uc838 \uc788\ub2e4.<\/p>\n\n\n\n

* \ub514\ub77d \ubc18\uae08\uc18d \uc0c1\ud0dc\uc640 \uc6e8\uc77c \ubc18\uae08\uc18d \uc0c1\ud0dc:<\/strong> \uc804\ub3c4\ub300\uc640 \uac00\uc804\uc790\ub300\uac00 \ub9cc\ub098\ub294 \ubc29\uc2dd\uc5d0 \ub530\ub77c \uad6c\ubd84\ub418\ub294 \uc704\uc0c1\ubc18\uae08\uc18d\uc758 \uc804\uc790\uad6c\uc870\ub97c \uc758\ubbf8\ud55c\ub2e4. \ub514\ub77d \ubc18\uae08\uc18d \uc0c1\ud0dc\uc5d0\uc11c\ub294 \ub450 \ub760\uac00 \ud558\ub098\uc758 \uc810\uc5d0\uc11c \uad50\ucc28\ud558\uba70, \uc804\uc790\uac00 \uc9c8\ub7c9\uc774 \uc5c6\ub294 \ub514\ub77d \ud398\ub974\ubbf8\uc628\ucc98\ub7fc \uac70\ub3d9\ud558\uace0 \uc2dc\uac04 \ubc18\uc804 \ub300\uce6d\uc131\uacfc \ubc18\uc804 \ub300\uce6d\uc131\uc774 \ubaa8\ub450 \uc720\uc9c0\ub41c\ub2e4. \ubc18\uba74 \uc6e8\uc77c \ubc18\uae08\uc18d \uc0c1\ud0dc\ub294 \uc774\ub4e4 \ub300\uce6d\uc131 \uc911 \ud558\ub098\uac00 \uae68\uc9c0\uba74\uc11c \ud558\ub098\uc758 \ub514\ub77d \uc810\uc774 \uc11c\ub85c \ub2e4\ub978 \uc131\uc9c8\uc744 \uc9c0\ub2cc \ub450 \uac1c\uc758 \uc6e8\uc77c \uc810\uc73c\ub85c \ubd84\ub9ac\ub41c \uacbd\uc6b0\ub85c, \uc804\uc790\ub294 \uc190\uc7a1\uc774\uc131(\uce74\uc774\ub7f4\ub9ac\ud2f0)\uc744 \uac16\ub294 \uc6e8\uc77c \ud398\ub974\ubbf8\uc628\ucc98\ub7fc \uac70\ub3d9\ud558\uba70 \uc6d0\ud615 \uad11\uc804 \ud6a8\uacfc\uc640 \uac19\uc740 \uace0\uc720\ud55c \uc704\uc0c1\uc801 \ud604\uc0c1\uc774 \ub098\ud0c0\ub09c\ub2e4.<\/p>\n\n\n\n

\ud2b9\ud788 \uc8fc\ubaa9\ud560 \uc810\uc740 \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218\uc758 \ubcc0\ud654<\/strong>\ub2e4.<\/p>\n\n\n\n

\uc2e4\ud5d8 \uacb0\uacfc, \ubc15\ub9c9 \ub450\uaed8\uac00 \uac10\uc18c\ud568\uc5d0 \ub530\ub77c \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc218\ub294 \uc810\ucc28 \uac10\uc18c\ud558\ub2e4\uac00 10nm\uc5d0\uc11c \ucd5c\uc800\uc810\uc5d0 \ub3c4\ub2ec\ud55c \ub4a4, \ub2e4\uc2dc \uc99d\uac00\ud558\ub294 \ub69c\ub837\ud55c \ubcc0\ud654<\/strong>\ub97c \ubcf4\uc600\ub2e4.<\/p>\n\n\n\n

\uc774\ub294 \uc804\ud558 \ubc00\ub3c4, \ud398\ub974\ubbf8 \uc900\uc704, \uad11\ud559\u00b7\uc804\uae30 \uc804\ub3c4\ub3c4\uac00 \ubaa8\ub450 \uac19\uc740 \uc784\uacc4 \ub450\uaed8\uc5d0\uc11c \ucd5c\uc18c\uac12\uc744 \ubcf4\uc778\ub2e4\ub294 \uc0ac\uc2e4\uacfc \uc77c\uce58<\/strong>\ud558\uba70, \uc804\uc790 \uad6c\uc870\uc758 \uc704\uc0c1\uc774 \ubc14\ub00c\ub294 \ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774\uac00 \uc2e4\uc81c\ub85c \ubc1c\uc0dd\ud588\uc74c\uc744 \ubcf4\uc5ec\uc8fc\ub294 \uacb0\uc815\uc801 \uc99d\uac70<\/strong>\ub2e4.<\/p>\n\n\n\n

\uc774\ub7ec\ud55c \uacb0\uacfc\ub294 \uae30\uc874 \uc774\ub860 \uc5f0\uad6c\uc5d0\uc11c\ub9cc \uc608\uce21\ub410\ub358 \u2018\uc704\uc0c1\ubc18\uae08\uc18d\uc5d0\uc11c\uc758 \ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774\uc640 \ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc758 \uc9c1\uc811\uc801 \uc5f0\uad00\uc131\u2019\uc744 \uc138\uacc4 \ucd5c\ucd08\ub85c \uad11\ud559 \uc2e4\ud5d8\uc744 \ud1b5\ud574 \uc785\uc99d<\/strong>\ud55c \uac83\uc774\ub2e4.<\/p>\n\n\n\n

\uc774\uc885\uc11d \uad50\uc218\ub294 \u201c\uc774\ubc88 \uc5f0\uad6c\ub294 \uadf8\ub798\ud540\uc5d0 \uc774\uc740 \ucc28\uc138\ub300 \uc591\uc790\uc18c\uc7ac\ub85c \uc8fc\ubaa9\ubc1b\ub294 \uc704\uc0c1\ubc18\uae08\uc18d\uc5d0\uc11c \uc678\ubd80 \uc790\uadf9\uc774 \uc5c6\uc774 \ub9ac\ud504\uc2dc\uce20 \uc0c1\uc804\uc774\ub97c \uc2e4\ud5d8\uc801\uc73c\ub85c \ud655\uc778\ud55c \ucd5c\ucd08\uc758 \uc0ac\ub840<\/strong>\u201d\ub77c\uba70 \u201c\ud50c\ub77c\uc988\ub9c8 \uc9c4\ub3d9\uc774\ub77c\ub294 \ubb3c\ub9ac\ub7c9\uc774 \uc704\uc0c1\uc801 \uc804\uc790\uad6c\uc870 \ubcc0\ud654\uc640 \uc9c1\uc811 \uc5f0\uacb0\ub428\uc744 \ubcf4\uc5ec\uc90c\uc73c\ub85c\uc368, \uc591\uc790\uc18c\uc7ac\ub97c \uce21\uc815\u00b7\uc9c4\ub2e8\u00b7\uc81c\uc5b4\ud558\ub294 \uc0c8\ub85c\uc6b4 \uc811\uadfc\ubc95\uc744 \uc81c\uc2dc\ud588\ub2e4\u201d\uace0 \ub9d0\ud588\ub2e4.<\/p>\n\n\n\n

\uc774\uc5b4 \u201c\uc774\ub294 \ud5a5\ud6c4 \uc591\uc790\uc18c\uc7ac\uc758 \uc0c1\ud0dc\ub97c \ube44\ud30c\uad34\uc801\uc73c\ub85c \uc9c4\ub2e8\ud558\uace0, \ub450\uaed8\u00b7\ubcc0\ud615\u00b7\uc678\ubd80 \uc790\uadf9\uc744 \ud1b5\ud574 \uc804\uc790\uad6c\uc870\ub97c \uc815\ubc00 \uc81c\uc5b4\ud558\uba70, \uc2e4\uc81c \uc18c\uc790 \uc124\uacc4\ub85c \uc774\uc5b4\uc9c8 \uc218 \uc788\ub294 \uc0c8\ub85c\uc6b4 \uae30\uc900\uc774 \ub420 \uac83<\/strong>\u201d\uc774\ub77c\uace0 \uac15\uc870\ud588\ub2e4.<\/p>\n\n\n\n

GIST \ubb3c\ub9ac\u00b7\uad11\uacfc\ud559\uacfc \uc774\uc885\uc11d \uad50\uc218\uac00 \uc8fc\ub3c4\ud558\uace0 \uae40\ubbfc\uc12d \ubc15\uc0ac\uac00 \uc218\ud589\ud588\uc73c\uba70, \uacbd\ud76c\ub300\ud559\uad50 \uc751\uc6a9\ubb3c\ub9ac\ud559\uacfc \ucd5c\uc11d\ud638 \uace0\ud669\uba85\uc608\uad50\uc218 \uc5f0\uad6c\ud300, \ud638\uc8fc\uad6d\ub9bd\ub300\ud559\uad50\u00b7\uc131\uade0\uad00\ub300\ud559\uad50 \uc5f0\uad6c\uc9c4\uc774 \ud568\uaed8 \ucc38\uc5ec\ud55c \uc774\ubc88 \uc5f0\uad6c\ub294 \uacfc\ud559\uae30\uc220\uc815\ubcf4\ud1b5\uc2e0\ubd80\u00b7\ud55c\uad6d\uc5f0\uad6c\uc7ac\ub2e8 \uc911\uacac\uc5f0\uad6c\uc790\uc9c0\uc6d0\uc0ac\uc5c5\uc758 \uc9c0\uc6d0\uc744 \ubc1b\uc558\ub2e4.<\/p>\n\n\n\n

\uc5f0\uad6c \uacb0\uacfc\ub294 \uad6d\uc81c\ud559\uc220\uc9c0 \u300a\uba38\ud2f0\ub9ac\uc5bc\uc988 \ud22c\ub370\uc774 \ud53c\uc9c1\uc2a4(Materials Today Physics)\u300b\uc5d0 2025\ub144 12\uc6d4 9\uc77c \uc628\ub77c\uc778\uc73c\ub85c \uac8c\uc7ac\ub410\ub2e4.<\/p>\n\n\n\n

\ud55c\ud3b8 GIST\ub294 \uc774\ubc88 \uc5f0\uad6c \uc131\uacfc\uac00 \ud559\uc220\uc801 \uc758\uc758\uc640 \ud568\uaed8 \uc0b0\uc5c5\uc801 \uc751\uc6a9 \uac00\ub2a5\uc131\uae4c\uc9c0 \uace0\ub824\ud55c \uac83\uc73c\ub85c, \uae30\uc220\uc774\uc804 \uad00\ub828 \ud611\uc758\ub294 \uae30\uc220\uc0ac\uc5c5\ud654\uc13c\ud130(hgmoon@gist.ac.kr)\ub97c \ud1b5\ud574 \uc9c4\ud589\ud560 \uc218 \uc788\ub2e4\uace0 \ubc1d\ud614\ub2e4. <\ub05d><\/p>\n\n\n\n

Publication Date: December 2025<\/strong><\/p>\n\n\n\n

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