{"id":208793,"date":"2024-03-21T14:07:29","date_gmt":"2024-03-21T14:07:29","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%ec%96%91%ec%9e%90-%ec%9d%b4%ec%83%81-%ed%99%80-%ed%9a%a8%ea%b3%bc-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ec%a0%95%ec%9d%98-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%9d%91%ec%9a%a9\/"},"modified":"2024-05-15T11:33:16","modified_gmt":"2024-05-15T11:33:16","slug":"%ec%96%91%ec%9e%90-%ec%9d%b4%ec%83%81-%ed%99%80-%ed%9a%a8%ea%b3%bc-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ec%a0%95%ec%9d%98-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%9d%91%ec%9a%a9","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/%ec%96%91%ec%9e%90-%ec%9d%b4%ec%83%81-%ed%99%80-%ed%9a%a8%ea%b3%bc-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ec%a0%95%ec%9d%98-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%9d%91%ec%9a%a9\/","title":{"rendered":"\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc \ubc29\uc815\uc2dd | \uc815\uc758, \uacc4\uc0b0 \ubc0f \uc751\uc6a9"},"content":{"rendered":"

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub294 \uc790\uae30\uc7a5 \uc5c6\uc774\ub3c4 \ud2b9\uc815 \ubb3c\uc9c8\uc5d0\uc11c \uc804\uc790\uac00 \uc9c1\uac01 \ubc29\ud5a5\uc73c\ub85c \uc804\ub958\ub97c \ud750\ub974\uac8c \ud558\ub294 \uc804\uc790\uae30 \ud604\uc0c1\uc785\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub780 \ubb34\uc5c7\uc778\uac00?<\/h2>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc(Quantum Anomalous Hall Effect, QAHE)\ub294 \uc790\uae30\uc7a5\uc774 \uc5c6\ub294 \uacbd\uc6b0\uc5d0\ub3c4 \uc804\uc790 \uc2dc\uc2a4\ud15c\uc5d0\uc11c \ubc1c\uc0dd\ud560 \uc218 \uc788\ub294 \ud765\ubbf8\ub85c\uc6b4 \uc804\uc790\uae30 \ud604\uc0c1 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \uc774 \ud604\uc0c1\uc740 \ud2b9\uc815\ud55c \ubb3c\uc9c8\uc5d0\uc11c\ub9cc \uad00\ucc30\ub418\uba70, \uadf8 \ubb3c\uc9c8\uc758 \uc804\uc790\uad6c\uc870\uac00 \ud2b9\uc218\ud558\uac8c \ubc30\uc5f4\ub418\uc5b4 \uc788\uc5b4\uc57c \ud569\ub2c8\ub2e4. \uc790\uc131\uccb4 \ub0b4\uc5d0\uc11c \uad6d\uc18c\ud654\ub41c \uc790\uae30 \ubaa8\uba58\ud2b8\uc640 \uc2a4\ud540-\uada4\ub3c4 \uacb0\ud569\uc774 \ud070 \uc5ed\ud560\uc744 \ud558\uba70, \uc774 \ub450 \uc694\uc18c\uac00 \uacb0\ud569\ud558\uc5ec \uc804\uc790\uac00 \ubb3c\uc9c8\uc744 \ud1b5\ud574 \uc774\ub3d9\ud560 \ub54c \ud2b9\uc774\ud55c \ubc29\uc2dd\uc73c\ub85c \uc774\ub3d9\ud558\ub3c4\ub85d \uac15\uc81c\ud569\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\uc758 \uae30\ubcf8 \uc6d0\ub9ac<\/h2>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub294 \uc804\uc790\uc758 \u2018\ubca0\ub9ac \uace1\ub960(Berry curvature)\u2019 \uc774\ub77c\ub294 \uac1c\ub150\uacfc \ubc00\uc811\ud558\uac8c \uc5f0\uacb0\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \ubca0\ub9ac \uace1\ub960\uc740 \ud30c\ub77c\ubbf8\ud130 \uacf5\uac04\uc5d0\uc11c \uc591\uc790 \uc0c1\ud0dc\uc758 \uc9c4\ud654\ub97c \uc124\uba85\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc218\ud559\uc801 \ub3c4\uad6c\uc785\ub2c8\ub2e4. \uc774 \uace1\ub960\ub85c \uc778\ud574 \uc804\uc790\ub294 \uc790\uae30\uc7a5\uc774 \uc5c6\uc74c\uc5d0\ub3c4 \ubd88\uad6c\ud558\uace0, \uc77c\uc885\uc758 \uc720\ud6a8 \uc790\uae30\uc7a5\uc744 \uacbd\ud5d8\ud558\ub294 \uac83\ucc98\ub7fc \ud589\ub3d9\ud569\ub2c8\ub2e4. \uc774\ub85c \uc778\ud574 \uc804\uc790\ub294 \uc77c\ubc18\uc801\uc778 \ud640 \ud6a8\uacfc\uc640 \uc720\uc0ac\ud558\uac8c, \uc9c1\uac01 \ubc29\ud5a5\uc73c\ub85c \uc804\ub958\uac00 \ud750\ub974\ub294 \ud604\uc0c1\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\uc758 \uc218\ud559\uc801 \ud45c\ud604<\/h2>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub97c \uc124\uba85\ud558\ub294 \uae30\ubcf8 \ubc29\uc815\uc2dd\uc740 \uc804\ub3c4\ub3c4 \ud150\uc11c\ub97c \ud1b5\ud574 \ub098\ud0c0\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc804\ub3c4\ub3c4 \ud150\uc11c\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc2dd\uc73c\ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4:
\n\\[ \\sigma_{xy} = \\frac{e^2}{h} C \\]
\n\uc5ec\uae30\uc11c \\( \\sigma_{xy} \\)\ub294 \uc804\ub3c4\ub3c4\uc774\uba70, \\( e \\)\ub294 \uc804\uc790\uc758 \uc804\ud558, \\( h \\)\ub294 \ud50c\ub791\ud06c \uc0c1\uc218, \\( C \\)\ub294 \ucc9c-\uc2dc\ubaac\uc2a4 \ud1a0\ud3f4\ub85c\uc9c0 \uce58(Chern-Simons topological invariant)\uc785\ub2c8\ub2e4. \uc774 \uce58\ub294 \ubb3c\uc9c8\uc758 \ubca0\ub9ac \uace1\ub960\uc5d0 \uc758\ud574 \uacb0\uc815\ub418\uba70, \uc774 \uac12\uc774 \ubc14\ub85c \uc591\uc790 \uc774\uc0c1 \ud640 \uc804\ub3c4\ub3c4\ub97c \uc815\ub7c9\ud654\ud558\ub294 \uc8fc\uc694 \ud30c\ub77c\ubbf8\ud130\uc785\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\uc758 \uacc4\uc0b0<\/h2>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\uc758 \uacc4\uc0b0\uc740 \ud2b9\ud788 \uc5b4\ub835\uc2b5\ub2c8\ub2e4. \uadf8 \uc774\uc720\ub294 \uc774 \ud604\uc0c1\uc774 \ubc1c\uc0dd\ud558\uae30 \uc704\ud574\uc11c\ub294 \ubb3c\uc9c8\uc758 \uc804\uc790 \uad6c\uc870\ub97c \uc815\ud655\ud558\uac8c \uc774\ud574\ud558\uace0, \ubca0\ub9ac \uace1\ub960\uc744 \uc815\ud655\ud788 \uacc4\uc0b0\ud574\uc57c \ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc774 \uacc4\uc0b0\uc740 \uc8fc\ub85c \uace0\uae09 \ucef4\ud4e8\ud130 \uc2dc\ubbac\ub808\uc774\uc158\uacfc \uc591\uc790\uc5ed\ud559\uc758 \ubcf5\uc7a1\ud55c \uc218\ud559\uc801 \uacf5\uc2dd\uc744 \ud544\uc694\ub85c \ud569\ub2c8\ub2e4. \uc8fc\ub85c \uc0ac\uc6a9\ub418\ub294 \ubc29\ubc95 \uc911 \ud558\ub098\ub294 \ud0a4\uc140(Kosterlitz-Thouless) \uc804\uc774 \uc774\ub860\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\uc758 \uc751\uc6a9<\/h2>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub294 \uc2e0\uc18c\uc7ac \uc5f0\uad6c\uc640 \uc2a4\ud540\ud2b8\ub85c\ub2c9\uc2a4 \uac19\uc740 \ubd84\uc57c\uc5d0\uc11c \ub9e4\uc6b0 \uc720\ub9dd\ud558\ub2e4\uace0 \ud3c9\uac00\ubc1b\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc774 \ud604\uc0c1\uc744 \uc774\uc6a9\ud558\uba74 \ub354 \ud6a8\uc728\uc801\uc778 \uc804\uc790 \uc18c\uc790\ub97c \uc124\uacc4\ud560 \uc218 \uc788\uc73c\uba70, \uc5d0\ub108\uc9c0 \uc18c\ube44\ub97c \uc904\uc774\ub294 \ub3d9\uc2dc\uc5d0 \uc18c\uc790\uc758 \uc131\ub2a5\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub610\ud55c, \uadf9\uc800\uc628\uc5d0\uc11c\ub9cc \uc791\ub3d9\ud558\ub358 \uae30\uc874\uc758 \uc591\uc790 \ud640 \ud6a8\uacfc\uc640 \ub2ec\ub9ac, \uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub294 \uc0c1\ub300\uc801\uc73c\ub85c \ub192\uc740 \uc628\ub3c4\uc5d0\uc11c\ub3c4 \uad00\ucc30\ub420 \uc218 \uc788\uc5b4 \uc2e4\uc6a9\uc801\uc778 \uc751\uc6a9 \uac00\ub2a5\uc131\uc774 \ub192\uc2b5\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub294 \uc5ec\uc804\ud788 \ud65c\ubc1c\ud788 \uc5f0\uad6c\ub418\uace0 \uc788\ub294 \uc8fc\uc81c\uc774\uba70, \uc774 \ud604\uc0c1\uc744 \ub354 \uc798 \uc774\ud574\ud568\uc73c\ub85c\uc368 \ubbf8\ub798\uc758 \uc804\uc790\uae30\uc220 \ubc1c\uc804\uc5d0 \ud06c\uac8c \uae30\uc5ec\ud560 \uc218 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub294 \uc790\uae30\uc7a5 \uc5c6\uc774\ub3c4 \ud2b9\uc815 \ubb3c\uc9c8\uc5d0\uc11c \uc804\uc790\uac00 \uc9c1\uac01 \ubc29\ud5a5\uc73c\ub85c \uc804\ub958\ub97c \ud750\ub974\uac8c \ud558\ub294 \uc804\uc790\uae30 \ud604\uc0c1\uc785\ub2c8\ub2e4.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[94],"tags":[95],"class_list":["post-208793","post","type-post","status-publish","format-standard","hentry","category-94","tag-95","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"\n\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc \ubc29\uc815\uc2dd | \uc815\uc758, \uacc4\uc0b0 \ubc0f \uc751\uc6a9<\/title>\n<meta name=\"description\" content=\"\uc591\uc790 \uc774\uc0c1 \ud640 \ud6a8\uacfc\ub294 \uc790\uae30\uc7a5 \uc5c6\uc774\ub3c4 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