Knowledge

Tunnel junction

Source 📝

272: 215: 20: 55:, the electron has a non-zero wave amplitude in the barrier, and hence it has some probability of passing through the barrier. Tunnel junctions serve a variety of different purposes. 91:, electrons tunnel through a thin insulating barrier from one magnetic material to another. This can serve as a basis for a magnetic detector. 313: 256: 135:
allows the tunneling of electrons for certain voltages. This allows them to be used for generating high-frequency signals.
35:
is a barrier, such as a thin insulating layer or electric potential, between two electrically conducting materials.
100: 352: 64: 347: 306: 144: 332: 342: 249: 299: 88: 242: 148: 111:
carry the supercurrent through the barrier by quantum tunneling, a phenomenon known as the
8: 337: 287: 230: 44: 186: 169: 222: 191: 52: 279: 181: 112: 48: 104: 115:. This setup can form the basis for extremely sensitive magnetometers, known as 283: 226: 326: 195: 76: 72: 40: 128: 68: 271: 108: 28: 36: 23:
Schematic representation of an electron tunneling through a barrier
19: 214: 132: 116: 67:, tunnel junctions form the connections between consecutive 107:
electrodes are separated by a non-superconducting barrier.
51:
of passing through the barrier. However, according to
94: 58: 16:Barrier between electrically conducting materials 324: 138: 307: 250: 168:Zhu, Jian-Gang (Jimmy); Park, Chando (2006). 43:) pass through the barrier by the process of 82: 314: 300: 257: 243: 185: 18: 167: 325: 151:) can be viewed as a tunnel junction. 266: 209: 13: 14: 364: 119:, as well as many other devices. 270: 213: 101:superconducting tunnel junctions 65:multijunction photovoltaic cells 47:. Classically, the electron has 122: 95:Superconducting tunnel junction 59:Multijunction photovoltaic cell 161: 147:(STM), the tip/air/substrate ( 1: 187:10.1016/S1369-7021(06)71693-5 154: 145:scanning tunneling microscopy 139:Scanning tunneling microscope 286:. You can help Knowledge by 229:. You can help Knowledge by 7: 170:"Magnetic tunnel junctions" 10: 369: 265: 208: 89:magnetic tunnel junctions 83:Magnetic tunnel junction 73:ohmic electrical contact 353:Electrochemistry stubs 282:-related article is a 225:-related article is a 71:. They function as an 24: 348:Quantum physics stubs 149:metal-insulator-metal 22: 333:Quantum electronics 75:in the middle of a 343:Mesoscopic physics 45:quantum tunnelling 25: 295: 294: 238: 237: 223:quantum mechanics 53:quantum mechanics 360: 316: 309: 302: 280:electrochemistry 274: 267: 259: 252: 245: 217: 210: 200: 199: 189: 165: 113:Josephson effect 49:zero probability 368: 367: 363: 362: 361: 359: 358: 357: 323: 322: 321: 320: 264: 263: 206: 204: 203: 174:Materials Today 166: 162: 157: 141: 125: 105:superconducting 97: 85: 61: 33:tunnel junction 17: 12: 11: 5: 366: 356: 355: 350: 345: 340: 335: 319: 318: 311: 304: 296: 293: 292: 275: 262: 261: 254: 247: 239: 236: 235: 218: 202: 201: 159: 158: 156: 153: 140: 137: 124: 121: 96: 93: 84: 81: 60: 57: 41:quasiparticles 15: 9: 6: 4: 3: 2: 365: 354: 351: 349: 346: 344: 341: 339: 336: 334: 331: 330: 328: 317: 312: 310: 305: 303: 298: 297: 291: 289: 285: 281: 276: 273: 269: 268: 260: 255: 253: 248: 246: 241: 240: 234: 232: 228: 224: 219: 216: 212: 211: 207: 197: 193: 188: 183: 180:(11): 36–45. 179: 175: 171: 164: 160: 152: 150: 146: 136: 134: 130: 129:tunnel diodes 120: 118: 114: 110: 106: 102: 92: 90: 80: 78: 77:semiconductor 74: 70: 69:p-n junctions 66: 56: 54: 50: 46: 42: 38: 34: 30: 21: 288:expanding it 277: 231:expanding it 220: 205: 177: 173: 163: 142: 126: 123:Tunnel diode 109:Cooper pairs 98: 86: 62: 32: 26: 29:electronics 338:Electrodes 327:Categories 155:References 196:1369-7021 37:Electrons 79:device. 194:  117:SQUIDs 103:, two 278:This 221:This 133:diode 284:stub 227:stub 192:ISSN 131:, a 39:(or 31:, a 182:doi 143:In 127:In 99:In 87:In 63:In 27:In 329:: 190:. 176:. 172:. 315:e 308:t 301:v 290:. 258:e 251:t 244:v 233:. 198:. 184:: 178:9

Index


electronics
Electrons
quasiparticles
quantum tunnelling
zero probability
quantum mechanics
multijunction photovoltaic cells
p-n junctions
ohmic electrical contact
semiconductor
magnetic tunnel junctions
superconducting tunnel junctions
superconducting
Cooper pairs
Josephson effect
SQUIDs
tunnel diodes
diode
scanning tunneling microscopy
metal-insulator-metal
"Magnetic tunnel junctions"
doi
10.1016/S1369-7021(06)71693-5
ISSN
1369-7021
Stub icon
quantum mechanics
stub
expanding it

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.