{"id":208738,"date":"2024-03-21T14:07:08","date_gmt":"2024-03-21T14:07:08","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/rkky-%ec%83%81%ed%98%b8%ec%9e%91%ec%9a%a9-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ea%b0%9c%eb%85%90-%ea%b3%b5%ec%8b%9d-%eb%b0%8f-%ec%9d%91%ec%9a%a9\/"},"modified":"2024-05-15T11:32:17","modified_gmt":"2024-05-15T11:32:17","slug":"rkky-%ec%83%81%ed%98%b8%ec%9e%91%ec%9a%a9-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ea%b0%9c%eb%85%90-%ea%b3%b5%ec%8b%9d-%eb%b0%8f-%ec%9d%91%ec%9a%a9","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ko\/rkky-%ec%83%81%ed%98%b8%ec%9e%91%ec%9a%a9-%eb%b0%a9%ec%a0%95%ec%8b%9d-%ea%b0%9c%eb%85%90-%ea%b3%b5%ec%8b%9d-%eb%b0%8f-%ec%9d%91%ec%9a%a9\/","title":{"rendered":"RKKY \uc0c1\ud638\uc791\uc6a9 \ubc29\uc815\uc2dd | \uac1c\ub150, \uacf5\uc2dd \ubc0f \uc751\uc6a9"},"content":{"rendered":"

RKKY \uc0c1\ud638\uc791\uc6a9\uc740 \uace0\uccb4 \ubb3c\ub9ac\ud559\uc5d0\uc11c \uae08\uc18d \ub0b4 \ubd88\uc21c\ubb3c \uc790\uae30 \ubaa8\uba58\ud2b8 \uac04\uc758 \uac04\uc811 \uad50\ud658 \uc0c1\ud638\uc791\uc6a9\uc744 \uc124\uba85\ud558\ub294 \uc774\ub860\uc785\ub2c8\ub2e4.<\/p>\n

RKKY \uc0c1\ud638\uc791\uc6a9 \uac1c\uc694<\/h2>\n

RKKY \uc0c1\ud638\uc791\uc6a9\uc740 \uace0\uccb4 \ubb3c\ub9ac\ud559\uc5d0\uc11c \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud558\ub294 \uc804\uc790\uae30\uc801 \uc0c1\ud638\uc791\uc6a9\uc758 \ud55c \ud615\ud0dc\uc785\ub2c8\ub2e4. \uc774 \uc774\ub860\uc744 \ucc98\uc74c \ub3c4\uc785\ud55c \uac83\uc740 Ruderman\uc640 Kittel\uc774\uba70, Kasuya\uc640 Yosida\uac00 \ucd94\uac00\uc801\uc73c\ub85c \ubc1c\uc804\uc2dc\ucf30\uc2b5\ub2c8\ub2e4. \uadf8\ub798\uc11c \uc774 \uc0c1\ud638\uc791\uc6a9\uc740 \uc774 \ub124 \uc0ac\ub78c\uc758 \uc774\ub984 \uccab \uae00\uc790\ub97c \ub530\uc11c RKKY \uc0c1\ud638\uc791\uc6a9\uc774\ub77c\uace0 \ubd88\ub9bd\ub2c8\ub2e4.<\/p>\n

\uae30\ubcf8 \uac1c\ub150<\/h2>\n

RKKY \uc0c1\ud638\uc791\uc6a9\uc740 \uae08\uc18d \uc548\uc5d0 \uc788\ub294 \ubd88\uc21c\ubb3c \uc790\uae30 \ubaa8\uba58\ud2b8\ub4e4 \uc0ac\uc774\uc758 \uac04\uc811\uc801\uc778 \uad50\ud658 \uc0c1\ud638\uc791\uc6a9\uc785\ub2c8\ub2e4. \uc774 \uc0c1\ud638\uc791\uc6a9\uc740 \ube44\uc790\uc131 \uc804\uc790\uac00 \ubd88\uc21c\ubb3c \uc0ac\uc774\ub97c \ub9e4\uac1c\uccb4\ub85c \uc791\uc6a9\ud558\uc5ec \uc804\ub2ec\ub418\ub294\ub370, \uc804\uc790\ub4e4\uc740 \ud398\ub974\ubbf8 \ud45c\uba74 \uadfc\ubc29\uc758 \uc2a4\ud540 \ubc00\ub3c4 \ud30c\ub3d9\uc744 \ud1b5\ud574 \uc774 \uc815\ubcf4\ub97c \uc804\ub2ec\ud569\ub2c8\ub2e4.<\/p>\n

\uacf5\uc2dd\ud654<\/h2>\n

RKKY \uc0c1\ud638\uc791\uc6a9\uc758 \uc5d0\ub108\uc9c0\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc2dd\uc73c\ub85c \uc8fc\uc5b4\uc9d1\ub2c8\ub2e4:<\/p>\n

\\[
\nE = -J^2 \\chi(R) \\mathbf{S}_1 \\cdot \\mathbf{S}_2
\n\\]<\/p>\n

\uc5ec\uae30\uc11c \\( J \\)\ub294 \ubd88\uc21c\ubb3c\uacfc \uc804\uc790 \uc0ac\uc774\uc758 \uad50\ud658 \uc0c1\uc218, \\( \\chi(R) \\)\ub294 \uc804\uc790\uc758 \uc2a4\ud540 \uc811\ud569 \ud568\uc218, \\( \\mathbf{S}_1 \\)\uacfc \\( \\mathbf{S}_2 \\)\ub294 \uac01\uac01 \ub450 \ubd88\uc21c\ubb3c \uc790\uae30 \ubaa8\uba58\ud2b8\uc785\ub2c8\ub2e4. \\( R \\)\uc740 \ub450 \ubd88\uc21c\ubb3c \uc0ac\uc774\uc758 \uac70\ub9ac\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/p>\n

\uc2a4\ud540 \uc811\ud569 \ud568\uc218 \\( \\chi(R) \\)\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \uc8fc\uc5b4\uc9d1\ub2c8\ub2e4:<\/p>\n

\\[
\n\\chi(R) = \\frac{\\sin(2k_FR) – 2k_FR \\cos(2k_FR)}{(2k_FR)^4}
\n\\]<\/p>\n

\uc774\ub54c, \\( k_F \\)\ub294 \ud398\ub974\ubbf8 \ud30c\uc218\ub85c, \uc804\uc790\uc758 \ubc00\ub3c4\uc5d0 \ub530\ub77c \uacb0\uc815\ub429\ub2c8\ub2e4.<\/p>\n

\uc751\uc6a9<\/h2>\n

RKKY \uc0c1\ud638\uc791\uc6a9\uc740 \ub2e4\uc591\ud55c \uacfc\ud559 \ubc0f \uacf5\ud559 \ubd84\uc57c\uc5d0\uc11c \uc911\uc694\ud558\uac8c \ud65c\uc6a9\ub429\ub2c8\ub2e4. \ud2b9\ud788, \uc790\uc131 \ubb3c\uc9c8\uc758 \uc5f0\uad6c, \uc2a4\ud540\ud2b8\ub85c\ub2c9\uc2a4 \uc7a5\uce58\uc758 \uc124\uacc4, \uc815\ubcf4 \uc800\uc7a5 \ub9e4\uccb4\uc758 \uac1c\ubc1c \ub4f1\uc5d0 \uc801\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uc0c1\ud638\uc791\uc6a9 \ub355\ubd84\uc5d0 \uc790\uc131 \ubb3c\uc9c8\uc758 \uc138\ubc00\ud55c \ud2b9\uc131\uc744 \uc774\ud574\ud558\uace0, \ubcf4\ub2e4 \ud6a8\uc728\uc801\uc73c\ub85c \uc790\uc131 \uc7a5\uce58\ub97c \uc124\uacc4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

\uacb0\ub860<\/h2>\n

RKKY \uc0c1\ud638\uc791\uc6a9\uc740 \ubb3c\ub9ac\ud559\uc790\uc640 \uc5d4\uc9c0\ub2c8\uc5b4\uc5d0\uac8c \ub9e4\uc6b0 \uc720\uc6a9\ud55c \ub3c4\uad6c\uc785\ub2c8\ub2e4. \uc774 \uc774\ub860\uc740 \ubd88\uc21c\ubb3c \uc790\uae30 \ubaa8\uba58\ud2b8 \uac04\uc758 \ubcf5\uc7a1\ud55c \uc0c1\ud638\uc791\uc6a9\uc744 \uc124\uba85\ud574 \uc8fc\uba70, \ucca8\ub2e8 \uae30\uc220\uc758 \ubc1c\uc804\uc744 \uc704\ud55c \uae30\ucd08\uc801 \uc774\ud574\ub97c \uc81c\uacf5\ud569\ub2c8\ub2e4. \ub354 \ub098\uc544\uac00 \uc774 \uc0c1\ud638\uc791\uc6a9\uc758 \uc6d0\ub9ac\ub97c \uc774\ud574\ud568\uc73c\ub85c\uc368, \uc6b0\ub9ac\ub294 \ub354 \uc791\uace0 \ub354 \uac15\ub825\ud55c \uc804\uc790\uae30\uae30\uc758 \uac1c\ubc1c\uc744 \uac00\ub2a5\ud558\uac8c \ud558\ub294 \uc0c8\ub85c\uc6b4 \ubc29\ubc95\ub4e4\uc744 \ud0d0\uc0c9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"

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