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Draft:TKNN formula

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1345: 1432: 859: 21: 1330: 615: 1458: 532: 1100: 854:{\displaystyle {\mathcal {F}}_{n}^{ab}(\mathbf {k} )={\frac {1}{2i}}\int d^{d}\mathbf {r} {\Big (}{\frac {\partial u_{n}^{*}}{\partial k_{a}}}{\frac {\partial u_{n}}{\partial k_{b}}}-{\frac {\partial u_{n}^{*}}{\partial k_{b}}}{\frac {\partial u_{n}}{\partial k_{a}}}{\Big )}} 973: 384: 1325:{\displaystyle \sigma _{H}={\frac {ie^{2}}{4\pi \hbar }}\sum _{n}\oint _{BZB}dk_{j}\int d^{2}r{\Big (}u_{n}^{*}{\frac {\partial u_{n}}{\partial k_{j}}}-{\frac {\partial u_{n}^{*}}{\partial k_{j}}}u_{n}^{*}{\Big )}} 1084: 241:
tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the
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is a formula for topological band theory due to D. J. Thouless, M. Kohmoto, M. P. Nightingale, and M. den Nijs. It was invented to explain various theoretical results such as the
67: 1395: 1519: 1489: 1369: 1554: 1426: 1005: 564: 1574: 878: 1675: 527:{\displaystyle \sigma _{H}^{ab}={\frac {e^{2}}{\hbar }}\sum _{n}\int _{BZ}{\frac {d^{2}\mathbf {k} }{(2\pi )^{2}}}{\mathcal {F}}_{n}^{ab}(\mathbf {k} )} 1657: 1521:, of a two-dimensional electron gas as a function of magnetic field. Both vertical axes were divided by the quantum unit of conductance 175: 358:. It's one of the leading results in the motivation for the Nobel prize of 2016 in physics and is foundational result in regards to 199: 257: 1022: 279: 82: 33: 1680: 1608: 1581: 316: 187: 115: 101: 88: 41: 1344: 193: 143: 44:, abandoned drafts may be deleted after six months. To edit the draft click on the "Edit" tab at the top of the window. 220: 110: 1442:
The electrons are modeled as a fluid of independent particles with an infinite set of phases, one per .. band or ...
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from experienced editors. These venues are only for help with editing and the submission process, not to get reviews.
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is considered an open research problem where the interaction between electrons becomes a major relevant factor.
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https://www.researchgate.net/publication/370658307_Integer_Quantum_Hall_Effect_and_Chern_Simons_Theories
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Physical Review Letters 49, 405 (1982) D. J. Thouless, M. Kohmoto, M. P. Nightingale, and M. den Nijs
293: 1348: 351: 92: 54: 1593: 1451: 355: 63: 1374: 312: 1494: 1464: 1354: 1603: 1524: 968:{\displaystyle \int _{BZ}d^{2}\mathbf {k} {\mathcal {F}}_{n}^{ab}(\mathbf {k} )=2\pi \ C_{n}} 71: 1404: 983: 542: 1559: 1431: 155: 227:
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by using multiple sources that meet four criteria. The sources should be (1)
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In this case the sum is over the full set of bands below the Fermi energy
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is the graphical solution to Harper's equation, where the energy ratio
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Where the sum is made over fully occupied bands below the fermi Energy
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To improve your odds of a faster review, tag your draft with relevant
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https://www.nobelprize.org/uploads/2018/06/haldane-lecture-slides.pdf
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Quantized Conductance in a Two-Dimensional Periodic Potential
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with the distribution of Chern numbers one per color
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Therefore the total Hall conductivity is Quantized:
1568: 1548: 1513: 1483: 1420: 1389: 1363: 1324: 1078: 999: 967: 853: 599: 558: 526: 1317: 1204: 846: 690: 29:Draft article not currently submitted for review. 1647:http://www.damtp.cam.ac.uk/user/tong/qhe/qhe.pdf 1461:Longitudinal and transverse (Hall) resistivity, 1011:which is a characteristic number for each band. 1618:Integer quantum hall and Chern Simons Theories 1450:The TKNN formula can explain the levels of the 8: 178:– a basic overview on how to edit Knowledge. 1556:(units are misleading). The filling factor 1371:is plotted as a function of the flux ratio 40:currently pending review. While there are 1561: 1538: 1532: 1526: 1502: 1496: 1472: 1466: 1412: 1406: 1376: 1356: 1316: 1315: 1309: 1304: 1291: 1276: 1271: 1261: 1249: 1234: 1224: 1218: 1213: 1203: 1202: 1193: 1180: 1161: 1151: 1127: 1117: 1108: 1102: 1070: 1060: 1045: 1039: 1030: 1024: 991: 985: 959: 935: 923: 918: 912: 911: 905: 899: 886: 880: 845: 844: 835: 820: 810: 801: 786: 781: 771: 759: 744: 734: 725: 710: 705: 695: 689: 688: 683: 677: 655: 644: 632: 627: 621: 620: 617: 588: 583: 577: 576: 573: 550: 544: 516: 504: 499: 493: 492: 482: 462: 456: 449: 440: 430: 415: 409: 397: 392: 386: 1456: 1628: 1141: 600:{\displaystyle {\mathcal {F}}_{n}^{ab}} 421: 233:Improving your odds of a speedy review 354:and experimental results such as the 7: 1576:is displayed for the last 4 plateau. 72:talk about the subject in some depth 1454:as a set of independent electrons. 176:Knowledge:Contributing to Knowledge 1284: 1264: 1242: 1227: 828: 813: 794: 774: 752: 737: 718: 698: 208:– make sure your article includes 14: 1676:AfC G13 eligible soon submissions 200:Knowledge:Writing better articles 55:qualifies for a Knowledge article 936: 906: 684: 645: 517: 463: 131:editing or submitting your draft 48:To be accepted, a draft should: 1609:Berry connection and curvature 1582:Fractional quantum Hall effect 940: 932: 649: 641: 521: 513: 479: 469: 188:Help:Referencing for beginners 76:there are alternative criteria 1: 202:– how to improve your article 196:– how to develop your article 194:Knowledge:Article development 1390:{\displaystyle 2\pi \alpha } 335:Submit the draft for review! 141:at the AfC Help Desk or get 1452:Integer quantum Hall Effect 356:Integer Quantum Hall Effect 221:Knowledge:Featured articles 190:– how to include references 1697: 1514:{\displaystyle \rho _{xy}} 1484:{\displaystyle \rho _{xx}} 68:independent of the subject 1364:{\displaystyle \epsilon } 111:your business or employer 36:(AfC) submission. It is 1549:{\displaystyle e^{2}/h} 607:is the Berry cuvature: 225:Knowledge:Good articles 206:Knowledge:Verifiability 184:– how to use the markup 1577: 1570: 1550: 1515: 1485: 1439: 1436:Hofstadter's butterfly 1422: 1398: 1391: 1365: 1326: 1080: 1001: 969: 855: 601: 560: 528: 360:topological insulators 260:Add tags to your draft 169:How to improve a draft 152:feedback on your draft 24: 1681:Draft AfC submissions 1571: 1551: 1516: 1486: 1460: 1434: 1423: 1421:{\displaystyle E_{F}} 1392: 1366: 1347: 1327: 1081: 1002: 1000:{\displaystyle C_{n}} 970: 856: 602: 561: 559:{\displaystyle E_{F}} 529: 83:neutral point of view 34:Articles for creation 23: 1569:{\displaystyle \nu } 1560: 1525: 1495: 1465: 1405: 1375: 1355: 1349:Hofstadter butterfly 1340:Hofstadter butterfly 1101: 1023: 984: 879: 616: 572: 543: 385: 352:Hofstadter butterfly 219:You can also browse 160:relevant WikiProject 113:. If you do so, you 102:strongly discouraged 95:. Do not copy-paste. 1594:Quantum Hall Effect 1446:Quantum Hall Effect 1314: 1281: 1223: 931: 791: 715: 640: 596: 512: 405: 213:third-party sources 74:. For some topics, 1578: 1566: 1546: 1511: 1481: 1440: 1418: 1399: 1387: 1361: 1322: 1300: 1267: 1209: 1156: 1076: 1065: 997: 965: 910: 851: 777: 701: 619: 597: 575: 556: 524: 491: 435: 388: 81:Be written from a 25: 1604:Adiabatic theorem 1298: 1256: 1147: 1145: 1056: 1054: 954: 842: 808: 766: 732: 668: 489: 426: 424: 343: 342: 137:ask us a question 129:If you need help 124:Where to get help 52:Show the subject 1688: 1660: 1655: 1649: 1644: 1638: 1633: 1575: 1573: 1572: 1567: 1555: 1553: 1552: 1547: 1542: 1537: 1536: 1520: 1518: 1517: 1512: 1510: 1509: 1490: 1488: 1487: 1482: 1480: 1479: 1428:in the spectrum 1427: 1425: 1424: 1419: 1417: 1416: 1396: 1394: 1393: 1388: 1370: 1368: 1367: 1362: 1331: 1329: 1328: 1323: 1321: 1320: 1313: 1308: 1299: 1297: 1296: 1295: 1282: 1280: 1275: 1262: 1257: 1255: 1254: 1253: 1240: 1239: 1238: 1225: 1222: 1217: 1208: 1207: 1198: 1197: 1185: 1184: 1172: 1171: 1155: 1146: 1144: 1133: 1132: 1131: 1118: 1113: 1112: 1085: 1083: 1082: 1077: 1075: 1074: 1064: 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where 276:Easy tools 93:plagiarize 1564:ν 1500:ρ 1470:ρ 1385:α 1382:π 1359:ϵ 1311:∗ 1285:∂ 1278:∗ 1265:∂ 1259:− 1243:∂ 1228:∂ 1220:∗ 1187:∫ 1159:∮ 1149:∑ 1142:ℏ 1139:π 1106:σ 1058:∑ 1028:σ 950:π 884:∫ 829:∂ 814:∂ 795:∂ 788:∗ 775:∂ 769:− 753:∂ 738:∂ 719:∂ 712:∗ 699:∂ 671:∫ 476:π 438:∫ 428:∑ 422:ℏ 390:σ 291:Advanced: 247:Astronomy 243:Biography 156:talk page 144:live help 133:, please 89:copyright 64:secondary 1588:See also 317:contribs 308:UtherSRG 210:reliable 107:yourself 87:Respect 60:reliable 282: ( 953:  325:Update 253:tags. 249:, and 99:It is 1007:is a 158:of a 1580:The 1491:and 980:and 346:The 313:talk 284:help 223:and 70:(4) 66:(3) 62:(2) 306:by 38:not 1672:: 362:. 315:| 286:) 278:: 245:, 119:. 109:, 1544:h 1540:/ 1534:2 1530:e 1507:y 1504:x 1477:x 1474:x 1414:F 1410:E 1397:. 1379:2 1318:) 1306:n 1302:u 1293:j 1289:k 1273:n 1269:u 1251:j 1247:k 1236:n 1232:u 1215:n 1211:u 1205:( 1200:r 1195:2 1191:d 1182:j 1178:k 1174:d 1169:B 1166:Z 1163:B 1153:n 1136:4 1129:2 1125:e 1121:i 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