{"id":208840,"date":"2024-03-21T14:07:45","date_gmt":"2024-03-21T14:07:45","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%ec%96%91%ec%9e%90-%ed%99%80-%ea%b0%95%ec%9e%90%ec%84%b1-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ea%b0%9c%eb%85%90-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%9d%91%ec%9a%a9\/"},"modified":"2024-05-15T11:33:49","modified_gmt":"2024-05-15T11:33:49","slug":"%ec%96%91%ec%9e%90-%ed%99%80-%ea%b0%95%ec%9e%90%ec%84%b1-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ea%b0%9c%eb%85%90-%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-%ed%99%80-%ea%b0%95%ec%9e%90%ec%84%b1-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ea%b0%9c%eb%85%90-%ea%b3%84%ec%82%b0-%eb%b0%8f-%ec%9d%91%ec%9a%a9\/","title":{"rendered":"\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd | \uac1c\ub150, \uacc4\uc0b0 \ubc0f \uc751\uc6a9"},"content":{"rendered":"

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc740 \uac15\ub825\ud55c \uc790\uae30\uc7a5\uc5d0\uc11c \uc804\uc790\uc758 \uc591\uc790\ud654\ub41c \uc5d0\ub108\uc9c0 \uc0c1\ud0dc\uc640 \ud2b9\uc218\ud55c \uc790\uc131 \uc0c1\ud0dc\ub97c \uacc4\uc0b0\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc218\ud559\uc801 \ub3c4\uad6c\uc785\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc758 \uac1c\ub150<\/h2>\n

\uc591\uc790 \ud640 \ud6a8\uacfc\ub294 1980\ub144\ub300\uc5d0 \ubc1c\uacac\ub41c \uc804\uc790 \uc2dc\uc2a4\ud15c\uc758 \uc591\uc790\uc5ed\ud559\uc801 \ud604\uc0c1\uc73c\ub85c, \uac15\ub825\ud55c \uc790\uae30\uc7a5\uacfc \uadf9\uc800\uc628 \ud658\uacbd\uc5d0\uc11c \uc804\uc790\uac00 \uc774\ub3d9\ud560 \ub54c \ub098\ud0c0\ub098\ub294 \ud2b9\uc218\ud55c \uc804\uae30 \uc804\ub3c4 \ud604\uc0c1\uc785\ub2c8\ub2e4. \uc774 \ud6a8\uacfc\ub294 \uc591\uc790 \uc5ed\ud559\uacfc \uace0\uccb4 \ubb3c\ub9ac\ud559\uc758 \uad50\ucc28\uc810\uc5d0 \uc788\uc73c\uba70, \uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc740 \uc774 \ud604\uc0c1\uc744 \uc124\uba85\ud558\ub294 \ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \ud640 \uac15\uc790\uc131\uc740 \ud2b9\uc815 \uc870\uac74\uc5d0\uc11c \uc591\uc790 \ud640 \ud6a8\uacfc\uc5d0\uc11c \ub098\ud0c0\ub098\ub294 \uc790\uc131 \uc0c1\ud0dc\ub97c \ub73b\ud558\uba70, \uc804\uc790\ub4e4\uc774 \uac15\ub825\ud55c \uc0c1\ud638\uc791\uc6a9\uc744 \ud1b5\ud574 \ud2b9\ubcc4\ud55c \ubc30\uc5f4\uc744 \uc774\ub8e8\uac8c \ub429\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uc0c1\ud638\uc791\uc6a9\uc740 \ubc34\ub4dc \uad6c\uc870\uc5d0 \ubcc0\ud654\ub97c \uc77c\uc73c\ud0a4\uace0 \ud2b9\ubcc4\ud55c \uc5d0\ub108\uc9c0 \uc0c1\ud0dc\ub97c \ub9cc\ub4e4\uc5b4\ub0c5\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc758 \uacc4\uc0b0<\/h2>\n

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc740 \uc77c\ubc18\uc801\uc73c\ub85c \ub780\ub2e4\uc6b0 \ub808\ubca8(Landau levels), \uc989 \uc790\uae30\uc7a5\uc5d0 \uc758\ud574 \uc591\uc790\ud654\ub41c \uc5d0\ub108\uc9c0 \ub808\ubca8\uc744 \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4. \uac15\ucca0 \uc790\uae30\uc7a5 \ud558\uc5d0\uc11c, \uc804\uc790\uc758 \uc5d0\ub108\uc9c0 \ub808\ubca8\uc740 \ub2e4\uc74c\uacfc \uac19\uc740 \uc2dd\uc744 \ud1b5\ud574 \uacc4\uc0b0\ub429\ub2c8\ub2e4:<\/p>\n

\\[ E_n = \\hbar \\omega_c (n + \\frac{1}{2}) \\]<\/p>\n

\uc5ec\uae30\uc11c \\( E_n \\)\uc740 \uc5d0\ub108\uc9c0\uc758 \uc591\uc790 \ud640 \uc218\uc900, \\( \\hbar \\)\ub294 \ub514\ub799 \uc0c1\uc218, \\( \\omega_c \\)\ub294 \uc0ac\uc774\ud074\ub85c\ud2b8\ub860 \uc8fc\ud30c\uc218, \uadf8\ub9ac\uace0 \\( n \\)\uc740 \uc591\uc790\ud654 \uc778\ub371\uc2a4 (0, 1, 2, …) \uc785\ub2c8\ub2e4.<\/p>\n

\uac15\uc790\uc131 \uc0c1\ud0dc\uc5d0\uc11c\uc758 \ud1a0\ud3f4\ub85c\uc9c0\uc801 \uc18d\uc131\uc740 \ubc84\ub9ac \ubca1\ud130(Berry curvature)\uc640 \uc5f0\uad00\uc774 \uc788\uc73c\uba70, \uc774\ub294 \ub2e4\uc74c\uc758 \uc2dd\uc73c\ub85c \ud45c\ud604\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4:
\n\\[ \\Omega_n(\\mathbf{k}) = -2 \\text{Im}\\left[ \\frac{\\langle \\partial_{k_x} u_n | \\partial_{k_y} u_n \\rangle}{(E_n – E_m)^2} \\right] \\]<\/p>\n

\uc5ec\uae30\uc11c \\( \\Omega_n(\\mathbf{k}) \\)\ub294 \ubc84\ub9ac \uace1\ub960\uc744, \\( |u_n\\rangle \\)\uc740 \uc8fc\uae30\uc801 \ubd80\ubd84 \ud30c\ub3d9 \ud568\uc218\ub97c, \\( E_m \\)\uc740 \ub2e4\ub978 \ub780\ub2e4\uc6b0 \ub808\ubca8\uc758 \uc5d0\ub108\uc9c0\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc758 \uc751\uc6a9<\/h2>\n

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc740 \uc218\ub9ce\uc740 \uacfc\ud559\uc801 \ubc0f \uae30\uc220\uc801 \uc751\uc6a9 \ubd84\uc57c\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc774 \ubc29\uc815\uc2dd\uc740 \uc800\uc804\ub825 \uc804\uc790 \uae30\uae30\ub098 \uc591\uc790 \ucef4\ud4e8\ud305\uc758 \ubc1c\uc804\uc5d0 \uae30\uc5ec\ud560 \uc218 \uc788\ub294 \uc0c8\ub85c\uc6b4 \ubb3c\uc9c8\uc758 \ud2b9\uc131\uc744 \uc774\ud574\ud558\ub294 \ub370 \uc0ac\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub610\ud55c, \uc591\uc790 \ud640 \ud6a8\uacfc\uc640 \uad00\ub828\ub41c \uc790\uc7ac\uc758 \uc804\uae30\uc801 \uc131\uc9c8\uc744 \uc608\uce21\ud558\uace0, \ud6a8\uc728\uc801\uc778 \uc804\uc790 \uc18c\uc790\ub97c \uc124\uacc4\ud558\ub294 \ub370 \ud544\uc218\uc801\uc785\ub2c8\ub2e4.<\/p>\n

\ubfd0\ub9cc \uc544\ub2c8\ub77c, \uc591\uc790 \ud640 \uac15\uc790\uc131 \uac1c\ub150\uc740 \ub098\ub178\uae30\uc220, \ud2b9\ud788 \ub098\ub178 \uc2a4\ucf00\uc77c\uc5d0\uc11c\uc758 \uc804\uae30 \ubc0f \uc790\uae30\uc801 \ud2b9\uc131\uc744 \uc870\uc791\ud558\ub294 \uc5f0\uad6c\uc5d0\ub3c4 \uc601\ud5a5\uc744 \ubbf8\uce69\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ubbf8\ub798\uc758 \ub098\ub178\uc804\uc790\uae30\uae30 \uac1c\ubc1c\uc5d0 \uc911\uc694\ud55c \ud1b5\ucc30\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

\uacb0\ub860<\/h2>\n

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc740 \uc591\uc790 \ud640 \ud6a8\uacfc\ub97c \uc774\ud574\ud558\uace0, \uc774\ub97c \uae30\ubc18\uc73c\ub85c \ud558\ub294 \ub2e4\uc591\ud55c \uae30\uc220\uacfc \uc751\uc6a9\uc744 \uac1c\ubc1c\ud558\ub294 \ub370 \uc911\uc694\ud55c \ub3c4\uad6c\uc785\ub2c8\ub2e4. \uc774 \ubc29\uc815\uc2dd\uc744 \ud1b5\ud574 \uacfc\ud559\uc790\ub4e4\uc740 \uc804\uc790\uc758 \ud589\ub3d9\uc744 \ub354 \uae4a\uc774 \uc774\ud574\ud560 \uc218 \uc788\uc73c\uba70, \ub098\uc544\uac00 \uace0\uc131\ub2a5 \uc804\uc790 \uae30\uae30\uc758 \uc124\uacc4 \ubc0f \uac1c\ubc1c\uc5d0 \uc788\uc5b4\uc11c \uae30\ucd08\uc801\uc778 \uc774\ud574\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ucd08\uacfc\ud559\uc758 \uc774\ud574\ub294 \uae30\uc220 \ud601\uc2e0\uc73c\ub85c \uc774\uc5b4\uc9c0\ub294 \uccab\uac78\uc74c\uc774 \ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

\uc591\uc790 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd\uc740 \uac15\ub825\ud55c \uc790\uae30\uc7a5\uc5d0\uc11c \uc804\uc790\uc758 \uc591\uc790\ud654\ub41c \uc5d0\ub108\uc9c0 \uc0c1\ud0dc\uc640 \ud2b9\uc218\ud55c \uc790\uc131 \uc0c1\ud0dc\ub97c \uacc4\uc0b0\ud558\ub294 \ub370 \uc0ac\uc6a9\ub418\ub294 \uc218\ud559\uc801 \ub3c4\uad6c\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-208840","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 \ud640 \uac15\uc790\uc131 \ubc29\uc815\uc2dd | \uac1c\ub150, \uacc4\uc0b0 \ubc0f \uc751\uc6a9<\/title>\n<meta name=\"description\" content=\"\uc591\uc790 \ud640 \uac15\uc790\uc131 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