FINITE-TEMPERATURE FERMI-EDGE SINGULARITY IN TUNNELING STUDIED USING RANDOM TELEGRAPH SIGNALS

被引:39
作者
COBDEN, DH [1 ]
MUZYKANTSKII, BA [1 ]
机构
[1] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND
关键词
D O I
10.1103/PhysRevLett.75.4274
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We show that random telegraph signals in metal-oxide-silicon transistors at millikelvin temperatures provide a powerful means of investigating tunneling between a two-dimensional electron gas and a single defect state. The tunneling rate shows a peak when the defect level lines up with the Fermi energy, in excellent agreement with theory of the Fermi-edge singularity at Finite temperature, This theory also indicates that defect levels are the origin of the dissipative two-state systems observed previously in similar devices.
引用
收藏
页码:4274 / 4277
页数:4
相关论文
共 35 条
[1]  
ALTSHULER BI, 1985, JETP LETT, V42, P294
[2]  
ALTSHULER BL, 1985, JETP LETT+, V41, P648
[3]   EXACT RESULTS IN KONDO PROBLEM - EQUIVALENCE TO A CLASSICAL ONE-DIMENSIONAL COULOMB GAS [J].
ANDERSON, PW ;
YUVAL, G .
PHYSICAL REVIEW LETTERS, 1969, 23 (02) :89-+
[4]  
Averin D. V., 1991, MESOSCOPIC PHENOMENA
[5]   THEORY OF COULOMB-BLOCKADE OSCILLATIONS IN THE CONDUCTANCE OF A QUANTUM DOT [J].
BEENAKKER, CWJ .
PHYSICAL REVIEW B, 1991, 44 (04) :1646-1656
[6]   DISSIPATIVE TUNNELING IN 2-STATE SYSTEMS AT THE SI/SIO2 INTERFACE [J].
COBDEN, DH ;
UREN, MJ ;
PEPPER, M .
PHYSICAL REVIEW LETTERS, 1993, 71 (25) :4230-4233
[7]   TIME-IRREVERSIBLE RANDOM TELEGRAPH SIGNAL DUE TO CURRENT ALONG A SINGLE HOPPING CHAIN [J].
COBDEN, DH ;
SAVCHENKO, A ;
PEPPER, M ;
PATEL, NK ;
RITCHIE, DA ;
FROST, JEF ;
JONES, GAC .
PHYSICAL REVIEW LETTERS, 1992, 69 (03) :502-505
[8]   INFRARED CATASTROPHY AND EXCITONS IN X-RAY-SPECTRA OF METALS [J].
COMBESCOT, M ;
NOZIERES, P .
JOURNAL DE PHYSIQUE, 1971, 32 (11-1) :913-+
[9]  
DELLOW MW, 1992, PHYS REV LETT, V70, P1754
[10]   SENSITIVITY OF THE CONDUCTANCE OF A DISORDERED METAL TO THE MOTION OF A SINGLE ATOM - IMPLICATIONS FOR 1/F NOISE [J].
FENG, SC ;
LEE, PA ;
STONE, AD .
PHYSICAL REVIEW LETTERS, 1986, 56 (18) :1960-1963